diff --git a/AGENTS.md b/AGENTS.md
index 739f783..92b10b2 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -22,6 +22,8 @@ Bygg ett webbaserat system för hantering av utlägg (”claims”) åt en organ
 10. Claims ska kopplas till ett projekt/evenemang; projekten hanteras via Django admin.
 11. Offentliga sidor ska använda Tailwind-baserade komponenter (CDN är okej) med minimalistisk layout. Claim-formuläret ska erbjuda klient-side kontroll för antal rader (plus/minus) utan sidladdning och återanvända formsetets tomma form som mall.
 12. Adminvyn för claims ska spegla samma designprinciper (kort per claim, statuschippar, loggtimeline och inlinebeslut).
+13. Hantering av utbetalningar i UI är bakom flaggan `CLAIMS_ENABLE_INTERNAL_PAYMENTS` och kan även togglas via Django admin (modell `SystemSetting`). När den är på ska godkända claims få en summeringssektion med tydlig info (namn, belopp, kontonr) och en "Betala"-knapp som markerar posten som betald (med logg och markerad betalstatus). När flaggan är av saknas knappen och admins instrueras att hantera betalning externt.
+14. När ett utlägg markerats som betalt ska beslut/status vara låst (ingen uppdatering av kommentar eller status i UI eller Django admin).
 
 ## Säkerhet och drift
 - Skydda admin-flöden bakom inloggning.
diff --git a/README.md b/README.md
index 89202ac..db95da9 100644
--- a/README.md
+++ b/README.md
@@ -14,8 +14,10 @@ uv run python manage.py runserver
 - Välj även vilket projekt/evenemang utlägget hör till (valen hämtas från Django admin > Projekt).
 - Adminlista (kräver `claims.view_claim`, uppdateringar kräver `claims.change_claim`): `http://localhost:8000/claims/admin/`
 - Adminlistan visar kvittolänk, vem som skickade in (och om det var en inloggad användare) samt en logg över alla statusändringar.
+- När ett utlägg markerats som betalat låses beslutskommentar/status i hela systemet (både listvyn och Django admin).
 - Export-meny (placeholder för framtida integrationer): `http://localhost:8000/claims/export/`
 - Inloggade användare kan följa sina egna claim via `http://localhost:8000/claims/mine/`.
 - Behörighets- och kontohantering (visa kräver `auth.view_user`, skapa/uppdatera/ta bort kräver respektive `auth.add_user`/`auth.change_user`/`auth.delete_user`): `http://localhost:8000/claims/users/`
 - Django auth-vyer (login/logout) exponeras under `/accounts/`.
 - Använd Django admin (`/admin/`) för att skapa konton, lägga användare i grupper, lägga upp projekt/evenemang samt tilldela behörigheterna `claims.view_claim` och `claims.change_claim`. Superusers har full kontroll per default.
+- Intern betalningshantering styrs av miljövariabeln `CLAIMS_ENABLE_INTERNAL_PAYMENTS` (default `true`) och kan dessutom togglas i Django admin under **Systeminställningar**. När funktionen är på får godkända claims en "Betala"-knapp som loggar vem som markerade posten som betald.
diff --git a/claims/admin.py b/claims/admin.py
index 175404b..c65ac3b 100644
--- a/claims/admin.py
+++ b/claims/admin.py
@@ -1,6 +1,11 @@
+from django.conf import settings
 from django.contrib import admin
+from django.shortcuts import redirect
+from django.urls import path, reverse
+from django.utils import timezone
+from django.utils.html import format_html
 
-from .models import Claim, ClaimLog, Project
+from .models import Claim, ClaimLog, Project, SystemSetting
 
 
 class ClaimLogInline(admin.TabularInline):
@@ -12,11 +17,113 @@ class ClaimLogInline(admin.TabularInline):
 
 @admin.register(Claim)
 class ClaimAdmin(admin.ModelAdmin):
-    list_display = ("full_name", "amount", "currency", "project", "status", "created_at", "submitted_by")
-    list_filter = ("status", "created_at", "project")
+    list_display = ("full_name", "amount", "currency", "project", "status", "paid", "created_at", "submitted_by")
+    list_filter = ("status", "created_at", "project", "paid_at")
     search_fields = ("full_name", "email", "description")
-    readonly_fields = ("created_at", "updated_at")
+    base_readonly = ("created_at", "updated_at", "paid_at", "paid_by", "internal_payments_enabled", "reset_paid_button")
+    readonly_fields = base_readonly
     inlines = [ClaimLogInline]
+    actions = ("mark_as_paid", "mark_as_unpaid")
+
+    @admin.display(boolean=True, description="Betald")
+    def paid(self, obj):
+        return obj.is_paid
+
+    @admin.display(description="Intern betalningshantering på?")
+    def internal_payments_enabled(self, obj):
+        return SystemSetting.internal_payments_active()
+
+    @admin.display(description="Återställ betalning")
+    def reset_paid_button(self, obj):
+        if not obj.is_paid:
+            return "Ej betald"
+        url = reverse("admin:claims_claim_reset_payment", args=[obj.pk])
+        return format_html(
+            '<a class="button" href="{}" onclick="return confirm(\'Ta bort betalningsmarkeringen?\');">Resetta</a>',
+            url,
+        )
+
+    @admin.action(description="Markera valda som betalda")
+    def mark_as_paid(self, request, queryset):
+        count = 0
+        for claim in queryset.filter(status=Claim.Status.APPROVED, paid_at__isnull=True):
+            claim.paid_at = timezone.now()
+            claim.paid_by = request.user
+            claim.save(update_fields=["paid_at", "paid_by"])
+            claim.add_log(
+                action=ClaimLog.Action.MARKED_PAID,
+                performed_by=request.user,
+                note="Markerad som betald via Django admin.",
+            )
+            count += 1
+        if count:
+            self.message_user(request, f"{count} utlägg markerades som betalda.")
+        else:
+            self.message_user(request, "Inga utlägg markerades – kontrollera status/betalning.", level="warning")
+
+    @admin.action(description="Återställ betalningsstatus (markera som obetalda)")
+    def mark_as_unpaid(self, request, queryset):
+        count = 0
+        for claim in queryset.filter(paid_at__isnull=False):
+            claim.paid_at = None
+            claim.paid_by = None
+            claim.save(update_fields=["paid_at", "paid_by"])
+            claim.add_log(
+                action=ClaimLog.Action.MARKED_PAID,
+                performed_by=request.user,
+                note="Betalningsstatus återställd via Django admin.",
+            )
+            count += 1
+        if count:
+            self.message_user(request, f"{count} utlägg markerades som obetalda.")
+        else:
+            self.message_user(request, "Inga utlägg behövde återställas.", level="warning")
+
+    def save_model(self, request, obj, form, change):
+        super().save_model(request, obj, form, change)
+
+    def get_urls(self):
+        urls = super().get_urls()
+        custom_urls = [
+            path(
+                "<int:claim_id>/reset-payment/",
+                self.admin_site.admin_view(self.reset_payment_view),
+                name="claims_claim_reset_payment",
+            ),
+        ]
+        return custom_urls + urls
+
+    def reset_payment_view(self, request, claim_id):
+        claim = Claim.objects.filter(pk=claim_id).first()
+        if not claim:
+            self.message_user(request, "Utlägget hittades inte.", level="error")
+            return redirect("admin:claims_claim_changelist")
+        claim.paid_at = None
+        claim.paid_by = None
+        claim.save(update_fields=["paid_at", "paid_by"])
+        claim.add_log(
+            action=ClaimLog.Action.MARKED_PAID,
+            performed_by=request.user,
+            note="Betalningsstatus återställd via reset-knapp i admin.",
+        )
+        self.message_user(request, f"{claim} markerades som obetald.")
+        return redirect("admin:claims_claim_change", claim_id)
+
+    def get_readonly_fields(self, request, obj=None):
+        if obj and obj.is_paid:
+            return self.base_readonly + ("status", "decision_note")
+        return self.base_readonly
+
+
+@admin.register(SystemSetting)
+class SystemSettingAdmin(admin.ModelAdmin):
+    list_display = ("internal_payments_enabled", "updated_at")
+    list_display_links = ("updated_at",)
+    list_editable = ("internal_payments_enabled",)
+    actions = None
+
+    def has_add_permission(self, request):
+        return not SystemSetting.objects.exists()
 
 
 @admin.register(ClaimLog)
diff --git a/claims/migrations/0005_claim_paid_at_claim_paid_by_alter_claimlog_action.py b/claims/migrations/0005_claim_paid_at_claim_paid_by_alter_claimlog_action.py
new file mode 100644
index 0000000..cbb7318
--- /dev/null
+++ b/claims/migrations/0005_claim_paid_at_claim_paid_by_alter_claimlog_action.py
@@ -0,0 +1,31 @@
+# Generated by Django 5.2.8 on 2025-11-08 17:35
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('claims', '0004_project_claim_project'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='claim',
+            name='paid_at',
+            field=models.DateTimeField(blank=True, null=True),
+        ),
+        migrations.AddField(
+            model_name='claim',
+            name='paid_by',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='claims_marked_paid', to=settings.AUTH_USER_MODEL),
+        ),
+        migrations.AlterField(
+            model_name='claimlog',
+            name='action',
+            field=models.CharField(choices=[('created', 'Submitted'), ('status_changed', 'Status changed'), ('marked_paid', 'Marked as paid')], max_length=32),
+        ),
+    ]
diff --git a/claims/migrations/0006_systemsetting.py b/claims/migrations/0006_systemsetting.py
new file mode 100644
index 0000000..23bc27c
--- /dev/null
+++ b/claims/migrations/0006_systemsetting.py
@@ -0,0 +1,25 @@
+# Generated by Django 5.2.8 on 2025-11-08 17:59
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('claims', '0005_claim_paid_at_claim_paid_by_alter_claimlog_action'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='SystemSetting',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('internal_payments_enabled', models.BooleanField(default=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+            ],
+            options={
+                'verbose_name': 'Systeminställning',
+                'verbose_name_plural': 'Systeminställningar',
+            },
+        ),
+    ]
diff --git a/claims/models.py b/claims/models.py
index fed983e..d1f855f 100644
--- a/claims/models.py
+++ b/claims/models.py
@@ -58,6 +58,14 @@ class Claim(models.Model):
     )
     status = models.CharField(max_length=20, choices=Status.choices, default=Status.PENDING)
     decision_note = models.TextField(blank=True)
+    paid_at = models.DateTimeField(null=True, blank=True)
+    paid_by = models.ForeignKey(
+        settings.AUTH_USER_MODEL,
+        null=True,
+        blank=True,
+        on_delete=models.SET_NULL,
+        related_name="claims_marked_paid",
+    )
     created_at = models.DateTimeField(auto_now_add=True)
     updated_at = models.DateTimeField(auto_now=True)
 
@@ -68,6 +76,10 @@ class Claim(models.Model):
         project = f" [{self.project}]" if self.project else ""
         return f"{self.full_name} – {self.amount} {self.currency}{project} ({self.get_status_display()})"
 
+    @property
+    def is_paid(self):
+        return self.paid_at is not None
+
     def add_log(self, *, action, performed_by=None, from_status=None, to_status=None, note=""):
         return ClaimLog.objects.create(
             claim=self,
@@ -83,6 +95,7 @@ class ClaimLog(models.Model):
     class Action(models.TextChoices):
         CREATED = "created", _("Submitted")
         STATUS_CHANGED = "status_changed", _("Status changed")
+        MARKED_PAID = "marked_paid", _("Marked as paid")
 
     claim = models.ForeignKey(Claim, related_name="logs", on_delete=models.CASCADE)
     action = models.CharField(max_length=32, choices=Action.choices)
@@ -108,3 +121,24 @@ class ClaimLog(models.Model):
 
     def __str__(self):
         return f"{self.get_action_display()} ({self.created_at:%Y-%m-%d %H:%M})"
+
+
+class SystemSetting(models.Model):
+    internal_payments_enabled = models.BooleanField(default=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        verbose_name = "Systeminställning"
+        verbose_name_plural = "Systeminställningar"
+
+    def __str__(self):
+        return "Systeminställningar"
+
+    @classmethod
+    def get_solo(cls):
+        obj, _ = cls.objects.get_or_create(pk=1)
+        return obj
+
+    @classmethod
+    def internal_payments_active(cls):
+        return cls.get_solo().internal_payments_enabled
diff --git a/claims/templates/claims/admin_list.html b/claims/templates/claims/admin_list.html
index 3beb0b1..9b819c5 100644
--- a/claims/templates/claims/admin_list.html
+++ b/claims/templates/claims/admin_list.html
@@ -34,8 +34,8 @@
         <div class="space-y-6">
             {% for claim in claims %}
                 <article class="rounded-3xl bg-white shadow-sm ring-1 ring-gray-100">
-                    <div class="flex flex-col gap-4 border-b border-gray-100 px-6 py-5 md:flex-row md:items-center md:justify-between">
-                        <div class="space-y-2">
+                    <div class="flex flex-col gap-4 border-b border-gray-100 px-6 py-5 lg:flex-row lg:justify-between">
+                        <div class="space-y-3">
                             <div class="flex flex-wrap items-center gap-3 text-sm text-gray-500">
                                 <span class="rounded-full bg-slate-100 px-3 py-1 font-semibold text-gray-700">
                                     {{ claim.amount }} {{ claim.currency }}
@@ -47,25 +47,67 @@
                                 {% endif %}
                                 <span class="text-xs text-gray-400">Skapad {{ claim.created_at|date:"Y-m-d H:i" }}</span>
                             </div>
-                            <h2 class="text-xl font-semibold text-gray-900">{{ claim.full_name }}</h2>
-                            <p class="text-sm text-gray-600">
-                                {{ claim.email }} · Konto: {{ claim.account_number }}<br>
-                                {% if claim.submitted_by %}
-                                    <span class="text-xs uppercase tracking-wide text-green-600">Inloggad användare: {{ claim.submitted_by.get_username }}</span>
-                                {% else %}
-                                    <span class="text-xs uppercase tracking-wide text-gray-500">Inskickad av gäst</span>
-                                {% endif %}
-                            </p>
+                            <div class="space-y-1">
+                                <p class="text-sm font-semibold uppercase tracking-wide text-gray-500">Person</p>
+                                <h2 class="text-2xl font-semibold text-gray-900">{{ claim.full_name }}</h2>
+                                <p class="text-sm text-gray-600">
+                                    {{ claim.email }} · Konto: <span class="font-mono text-gray-900">{{ claim.account_number }}</span><br>
+                                    {% if claim.submitted_by %}
+                                        <span class="text-xs uppercase tracking-wide text-green-600">Inloggad användare: {{ claim.submitted_by.get_username }}</span>
+                                    {% else %}
+                                        <span class="text-xs uppercase tracking-wide text-gray-500">Inskickad av gäst</span>
+                                    {% endif %}
+                                </p>
+                            </div>
                         </div>
-                        <div class="flex flex-col items-start gap-2 text-sm md:items-end">
+                        <div class="flex flex-col items-start gap-2 text-sm lg:items-end">
                             <span class="rounded-full px-4 py-2 text-sm font-semibold {% if claim.status == 'approved' %}bg-green-50 text-green-700 border border-green-200{% elif claim.status == 'rejected' %}bg-rose-50 text-rose-700 border border-rose-200{% else %}bg-amber-50 text-amber-800 border border-amber-200{% endif %}">
                                 {{ claim.get_status_display }}
                             </span>
                             {% if claim.decision_note %}
                                 <p class="text-xs text-gray-500">Kommentar: {{ claim.decision_note }}</p>
                             {% endif %}
+                            {% if payments_enabled and claim.status == 'approved' %}
+                                {% if claim.is_paid %}
+                                    <span class="rounded-full bg-emerald-100 px-3 py-1 text-xs font-semibold text-emerald-800">
+                                        Betald {{ claim.paid_at|date:"Y-m-d H:i" }}
+                                        {% if claim.paid_by %}av {{ claim.paid_by.get_username }}{% endif %}
+                                    </span>
+                                {% else %}
+                                    <span class="text-xs text-gray-500">Ej markerad som betald</span>
+                                {% endif %}
+                            {% endif %}
                         </div>
                     </div>
+
+                    {% if claim.status == 'approved' %}
+                        <div class="mx-6 mt-4 rounded-2xl border border-green-100 bg-green-50 px-6 py-4 text-sm text-green-900">
+                            <div class="flex flex-col gap-3 md:flex-row md:items-center md:justify-between">
+                                <div>
+                                    <p class="text-xs font-semibold uppercase tracking-wide text-green-600">Sammanfattning</p>
+                                    <p class="text-lg font-semibold text-green-900">{{ claim.full_name }}</p>
+                                    <p class="text-sm text-green-800">Belopp: <strong>{{ claim.amount }} {{ claim.currency }}</strong> · Konto: <span class="font-mono">{{ claim.account_number }}</span></p>
+                                </div>
+                                {% if payments_enabled %}
+                                    {% if claim.is_paid %}
+                                        <p class="text-xs uppercase tracking-wide text-emerald-600">Markerad som betald</p>
+                                    {% else %}
+                                        <form method="post" onsubmit="return confirm('Är du säker på att du har lagt upp betalningen? Markera endast som betald om beloppet skickas till banken.');">
+                                            {% csrf_token %}
+                                            <input type="hidden" name="action_type" value="payment">
+                                            <input type="hidden" name="payment_claim_id" value="{{ claim.id }}">
+                                            <button type="submit" class="inline-flex items-center gap-2 rounded-full bg-emerald-600 px-4 py-2 text-xs font-semibold uppercase tracking-wide text-white transition hover:bg-emerald-700">
+                                                Betala
+                                            </button>
+                                        </form>
+                                    {% endif %}
+                                {% else %}
+                                    <p class="text-xs text-green-700">Intern betalningshantering är av – markera betalning i ekonomisystemet.</p>
+                                {% endif %}
+                            </div>
+                        </div>
+                    {% endif %}
+
                     <div class="grid gap-6 px-6 py-6 lg:grid-cols-3">
                         <div class="lg:col-span-2">
                             <p class="text-sm font-semibold text-gray-500">Beskrivning</p>
@@ -110,24 +152,31 @@
                             </details>
 
                             {% if can_change %}
-                                <form method="post" class="space-y-3">
-                                    {% csrf_token %}
-                                    <input type="hidden" name="claim_id" value="{{ claim.id }}">
+                                {% if claim.is_paid %}
+                                    <p class="rounded-lg bg-slate-100 px-3 py-2 text-xs text-slate-600">
+                                        Utlägget är markerat som betalt. Ändringar av beslut/kommentar är låsta.
+                                    </p>
+                                {% else %}
+                                    <form method="post" class="space-y-3">
+                                        {% csrf_token %}
+                                        <input type="hidden" name="claim_id" value="{{ claim.id }}">
 
-                                    <label class="block text-sm font-medium text-gray-700">Åtgärd</label>
-                                    <select name="action" class="w-full rounded-lg border border-gray-300 px-3 py-2 text-sm text-gray-900 focus:border-brand-600 focus:outline-none focus:ring-2 focus:ring-brand-600">
-                                        {% for value, label in decision_choices %}
-                                            <option value="{{ value }}">{{ label }}</option>
-                                        {% endfor %}
-                                    </select>
+                                        <label class="block text-sm font-medium text-gray-700">Åtgärd</label>
+                                        <select name="action" class="w-full rounded-lg border border-gray-300 px-3 py-2 text-sm text-gray-900 focus:border-brand-600">
+                                            {% for value, label in decision_choices %}
+                                                <option value="{{ value }}">{{ label }}</option>
+                                            {% endfor %}
+                                        </select>
 
-                                    <label class="block text-sm font-medium text-gray-700">Kommentar</label>
-                                    <textarea name="decision_note" rows="3" class="w-full rounded-lg border border-gray-300 px-3 py-2 text-sm text-gray-900 focus:border-brand-600 focus:outline-none focus:ring-2 focus:ring-brand-600">{{ claim.decision_note }}</textarea>
+                                        <label class="block text-sm font-medium text-gray-700">Kommentar</label>
+                                        <textarea name="decision_note" rows="3" class="w-full rounded-lg border border-gray-300 px-3 py-2 text-sm text-gray-900 focus:border-brand-600">{{ claim.decision_note }}</textarea>
 
-                                    <button type="submit" class="w-full rounded-full bg-brand-600 px-4 py-2 text-sm font-semibold text-white transition hover:bg-brand-700">
-                                        Uppdatera beslut
-                                    </button>
-                                </form>
+                                        <input type="hidden" name="action_type" value="decision">
+                                        <button type="submit" class="w-full rounded-full bg-brand-600 px-4 py-2 text-sm font-semibold text-white transition hover:bg-brand-700">
+                                            Uppdatera beslut
+                                        </button>
+                                    </form>
+                                {% endif %}
                             {% endif %}
                         </div>
                     </div>
diff --git a/claims/templates/claims/base.html b/claims/templates/claims/base.html
index ddb74d6..00da0ad 100644
--- a/claims/templates/claims/base.html
+++ b/claims/templates/claims/base.html
@@ -24,21 +24,27 @@
 <body class="min-h-screen bg-slate-50 text-gray-900">
     <header class="bg-white shadow-sm">
         <div class="mx-auto flex max-w-6xl items-center justify-between px-4 py-4">
-            <div class="text-lg font-semibold text-gray-900">
-                claims-system
-            </div>
-            <nav class="flex flex-wrap items-center gap-4 text-sm font-medium text-gray-600">
-                <a class="hover:text-gray-900" href="{% url 'claims:submit' %}">Skicka utlägg</a>
-                <a class="hover:text-gray-900" href="{% url 'claims:admin-list' %}">Admin</a>
-                <a class="hover:text-gray-900" href="{% url 'claims:export' %}">Export</a>
+            <a href="{% url 'claims:submit' %}" class="text-lg font-semibold text-gray-900 hover:text-brand-700">claims-system</a>
+            <nav class="flex flex-wrap items-center gap-3 text-sm font-medium text-gray-600">
+                <div class="flex items-center gap-2">
+                    <span class="rounded-full border border-gray-200 bg-gray-50 px-3 py-1 text-xs uppercase tracking-wide text-gray-500">Offentlig</span>
+                    <a class="hover:text-gray-900" href="{% url 'claims:submit' %}">Skicka utlägg</a>
+                </div>
+                {% if user.is_authenticated %}
+                    <div class="flex flex-wrap items-center gap-3">
+                        <span class="rounded-full border border-gray-200 bg-gray-50 px-3 py-1 text-xs uppercase tracking-wide text-gray-500">Intern</span>
+                        <a class="hover:text-gray-900" href="{% url 'claims:admin-list' %}">Utläggslista</a>
+                        <a class="hover:text-gray-900" href="{% url 'claims:my-claims' %}">Mina utlägg</a>
+                        {% if perms.auth.view_user %}
+                            <a class="hover:text-gray-900" href="{% url 'claims:user-manage' %}">Användare</a>
+                        {% endif %}
+                        <a class="hover:text-gray-900" href="{% url 'claims:export' %}">Export</a>
+                        {% if user.is_staff %}
+                            <a class="hover:text-gray-900" href="{% url 'admin:index' %}">Django admin</a>
+                        {% endif %}
+                    </div>
+                {% endif %}
                 {% if user.is_authenticated %}
-                    <a class="hover:text-gray-900" href="{% url 'claims:my-claims' %}">Mina utlägg</a>
-                    {% if perms.auth.view_user %}
-                        <a class="hover:text-gray-900" href="{% url 'claims:user-manage' %}">Användare</a>
-                    {% endif %}
-                    {% if user.is_staff %}
-                        <a class="hover:text-gray-900" href="{% url 'admin:index' %}">Kontohantering</a>
-                    {% endif %}
                     <span class="hidden text-xs text-gray-400 sm:inline">|</span>
                     <span class="text-xs text-gray-500">Inloggad som {{ user.get_username }}</span>
                     <form action="{% url 'logout' %}" method="post" class="inline">
diff --git a/claims/templates/claims/my_claims.html b/claims/templates/claims/my_claims.html
index 379b74a..b06519e 100644
--- a/claims/templates/claims/my_claims.html
+++ b/claims/templates/claims/my_claims.html
@@ -3,61 +3,80 @@
 {% block title %}Mina utlägg{% endblock %}
 
 {% block content %}
-    <h1>Mina utlägg</h1>
-    <p>Här ser du status för de utlägg du skickat in när du varit inloggad.</p>
+<section class="space-y-6 py-6">
+    <header class="max-w-3xl">
+        <p class="text-sm font-semibold uppercase tracking-wide text-brand-600">Översikt</p>
+        <h1 class="text-3xl font-semibold text-gray-900">Mina utlägg</h1>
+        <p class="mt-2 text-sm text-gray-600">Här ser du alla utlägg du skickat in när du varit inloggad, inklusive status, kvitton och loggar.</p>
+    </header>
 
     {% if claims %}
-        <table>
-            <thead>
-                <tr>
-                    <th>Skickad</th>
-                    <th>Beskrivning</th>
-                    <th>Belopp</th>
-                    <th>Projekt</th>
-                    <th>Status</th>
-                    <th>Kvitto</th>
-                    <th>Logg</th>
-                </tr>
-            </thead>
-            <tbody>
+        <div class="grid gap-6">
             {% for claim in claims %}
-                <tr>
-                    <td>{{ claim.created_at|date:"Y-m-d H:i" }}</td>
-                    <td>{{ claim.description|linebreaksbr }}</td>
-                    <td>{{ claim.amount }} {{ claim.currency }}</td>
-                    <td>{{ claim.project|default:"-" }}</td>
-                    <td>{{ claim.get_status_display }}</td>
-                    <td>
-                        {% if claim.receipt %}
-                            <a href="{{ claim.receipt.url }}" target="_blank" rel="noopener">Visa fil</a>
-                        {% else %}
-                            –
-                        {% endif %}
-                    </td>
-                    <td>
-                        <details>
-                            <summary>Visa logg</summary>
-                            <ul>
-                                {% for log in claim.logs.all %}
-                                    <li>
-                                        {{ log.created_at|date:"Y-m-d H:i" }} –
-                                        {{ log.get_action_display }}
-                                        {% if log.from_status %} ({{ log.get_from_status_display }} → {{ log.get_to_status_display }}){% endif %}
-                                        {% if log.note %}
-                                            – "{{ log.note }}"
-                                        {% endif %}
-                                    </li>
-                                {% empty %}
-                                    <li>Ingen logg än.</li>
-                                {% endfor %}
-                            </ul>
-                        </details>
-                    </td>
-                </tr>
+                <article class="rounded-3xl bg-white px-6 py-6 shadow-sm ring-1 ring-gray-100">
+                    <div class="flex flex-col gap-4 border-b border-gray-100 pb-4 lg:flex-row lg:items-center lg:justify-between">
+                        <div>
+                            <p class="text-xs uppercase tracking-wide text-gray-500">Skickad {{ claim.created_at|date:"Y-m-d H:i" }}</p>
+                            <h2 class="mt-1 text-2xl font-semibold text-gray-900">{{ claim.description|default:"Utlägg" }}</h2>
+                            <p class="mt-2 text-sm text-gray-600">
+                                Belopp: <strong>{{ claim.amount }} {{ claim.currency }}</strong><br>
+                                Projekt: {{ claim.project|default:"-" }}
+                            </p>
+                        </div>
+                        <div class="flex flex-col items-start gap-2 text-sm lg:items-end">
+                            <span class="rounded-full px-4 py-2 text-sm font-semibold {% if claim.status == 'approved' %}bg-green-50 text-green-700 border border-green-200{% elif claim.status == 'rejected' %}bg-rose-50 text-rose-700 border border-rose-200{% else %}bg-amber-50 text-amber-800 border border-amber-200{% endif %}">
+                                {{ claim.get_status_display }}
+                            </span>
+                            {% if claim.paid_at %}
+                                <span class="rounded-full bg-emerald-50 px-3 py-1 text-xs font-semibold text-emerald-800">
+                                    Betald {{ claim.paid_at|date:"Y-m-d" }}
+                                </span>
+                            {% endif %}
+                        </div>
+                    </div>
+                    <div class="mt-4 grid gap-4 lg:grid-cols-[2fr,1fr]">
+                        <div>
+                            <p class="text-sm font-semibold text-gray-500">Detaljer</p>
+                            <p class="mt-2 whitespace-pre-wrap text-gray-800">{{ claim.description }}</p>
+                        </div>
+                        <div class="rounded-2xl bg-slate-50 p-4 text-sm text-gray-600">
+                            <p class="font-semibold text-gray-800">Kvitto</p>
+                            {% if claim.receipt %}
+                                <a class="mt-2 inline-flex items-center gap-2 text-brand-600 hover:text-brand-700" href="{{ claim.receipt.url }}" target="_blank" rel="noopener">
+                                    Visa fil
+                                </a>
+                            {% else %}
+                                <p class="mt-2 text-xs text-gray-400">Inget kvitto bifogat.</p>
+                            {% endif %}
+                        </div>
+                    </div>
+                    <details class="mt-4 rounded-2xl border border-dashed border-gray-200 bg-gray-50 p-4 text-sm text-gray-700">
+                        <summary class="cursor-pointer select-none text-sm font-semibold text-gray-800">Visa logg</summary>
+                        <ul class="mt-3 space-y-2 text-sm text-gray-600">
+                            {% for log in claim.logs.all %}
+                                <li class="rounded-lg bg-white px-3 py-2 shadow-sm">
+                                    <p class="font-semibold text-gray-900">{{ log.get_action_display }}</p>
+                                    <p class="text-xs text-gray-500">{{ log.created_at|date:"Y-m-d H:i" }}</p>
+                                    {% if log.from_status %}
+                                        <p class="text-xs text-gray-500">Status: {{ log.get_from_status_display }} → {{ log.get_to_status_display }}</p>
+                                    {% endif %}
+                                    {% if log.note %}
+                                        <p class="mt-1 text-xs text-gray-600">"{{ log.note }}"</p>
+                                    {% endif %}
+                                </li>
+                            {% empty %}
+                                <li class="text-xs text-gray-400">Ingen logg än.</li>
+                            {% endfor %}
+                        </ul>
+                    </details>
+                </article>
             {% endfor %}
-            </tbody>
-        </table>
+        </div>
     {% else %}
-        <p>Du har inte skickat in några utlägg ännu eller så gjordes de utan inloggning.</p>
+        <div class="rounded-3xl border border-dashed border-gray-200 bg-white px-6 py-10 text-center text-gray-500">
+            <p class="text-lg font-semibold text-gray-900">Inga utlägg ännu</p>
+            <p class="mt-2 text-sm">När du skickar in utlägg medan du är inloggad dyker de upp här.</p>
+        </div>
     {% endif %}
+</section>
 {% endblock %}
diff --git a/claims/templates/claims/submit_success.html b/claims/templates/claims/submit_success.html
new file mode 100644
index 0000000..b7af359
--- /dev/null
+++ b/claims/templates/claims/submit_success.html
@@ -0,0 +1,26 @@
+{% extends "claims/base.html" %}
+
+{% block title %}Tack för ditt utlägg{% endblock %}
+
+{% block content %}
+<section class="flex min-h-[60vh] items-center justify-center py-10">
+    <div class="w-full max-w-lg rounded-3xl bg-white px-8 py-10 text-center shadow-lg ring-1 ring-gray-100">
+        <p class="text-sm font-semibold uppercase tracking-wide text-brand-600">Tack!</p>
+        <h1 class="mt-2 text-3xl font-semibold text-gray-900">Utlägget är skickat</h1>
+        <p class="mt-3 text-sm text-gray-600">
+            Vi har tagit emot underlaget. Om du har fler kvitton kan du fylla i ett nytt formulär direkt,
+            annars kan du logga in för att följa statusen.
+        </p>
+        <div class="mt-6 flex flex-col gap-3 sm:flex-row sm:justify-center">
+            <a href="{% url 'claims:submit' %}"
+               class="inline-flex items-center justify-center rounded-full bg-brand-600 px-5 py-3 text-sm font-semibold text-white transition hover:bg-brand-700 focus:outline-none focus-visible:ring-2 focus-visible:ring-brand-600 focus-visible:ring-offset-2">
+                Skicka nytt utlägg
+            </a>
+            <a href="{% url 'login' %}"
+               class="inline-flex items-center justify-center rounded-full border border-gray-200 px-5 py-3 text-sm font-semibold text-gray-700 transition hover:bg-gray-50 focus:outline-none focus-visible:ring-2 focus-visible:ring-brand-600 focus-visible:ring-offset-2">
+                Logga in
+            </a>
+        </div>
+    </div>
+</section>
+{% endblock %}
diff --git a/claims/templates/claims/user_management.html b/claims/templates/claims/user_management.html
index 72272f0..784f968 100644
--- a/claims/templates/claims/user_management.html
+++ b/claims/templates/claims/user_management.html
@@ -3,76 +3,175 @@
 {% block title %}Användarhantering{% endblock %}
 
 {% block content %}
-    <h1>Användare & behörigheter</h1>
-    <p>Skapa nya konton, underhåll behörigheter och ta bort användare kopplat till utläggssystemet.</p>
+<section class="space-y-10 py-8">
+    <header class="max-w-3xl">
+        <p class="text-sm font-semibold uppercase tracking-wide text-brand-600">Konton & behörigheter</p>
+        <h1 class="mt-2 text-3xl font-semibold text-gray-900">Hantera användare</h1>
+        <p class="mt-3 text-sm text-gray-600">
+            Skapa nya konton, justera rättigheter för claim-flödet och ta bort användare som inte längre ska ha åtkomst.
+        </p>
+        <div class="mt-4 rounded-2xl border border-dashed border-amber-200 bg-amber-50 px-4 py-3 text-xs text-amber-800">
+            Notis: denna sida styr direkta behörigheter. Rättigheter via grupper eller superuser-status gäller även om kryssrutorna avmarkeras.
+        </div>
+    </header>
 
-    <p><small>Notis: sidan hanterar direkta behörigheter. Behörigheter via grupper eller superuser-status gäller även om kryssrutorna avmarkeras.</small></p>
-
-    <section>
-        <h2>Skapa ny användare</h2>
-        <form method="post">
-            {% csrf_token %}
-            <input type="hidden" name="action" value="create">
-            {{ create_form.as_p }}
-            <button type="submit">Skapa användare</button>
-        </form>
-    </section>
-
-    <hr>
-
-    <section>
-        <h2>Befintliga användare</h2>
-        <table>
-            <thead>
-            <tr>
-                <th>Användare</th>
-                <th>Namn</th>
-                <th>E-post</th>
-                <th>Behörigheter</th>
-                <th>Ta bort</th>
-            </tr>
-            </thead>
-            <tbody>
-            {% for row in user_rows %}
-                {% with user=row.user %}
-                <tr>
-                    <td>
-                        {{ user.username }}
-                        {% if user.is_superuser %}<span title="Superuser">⭐</span>{% endif %}
-                    </td>
-                    <td>{{ user.get_full_name|default:"-" }}</td>
-                    <td>{{ user.email|default:"-" }}</td>
-                    <td>
-                        {% with form=row.permission_form %}
-                            <form method="post">
-                                {% csrf_token %}
-                                <input type="hidden" name="action" value="update">
-                                {{ form.user_id }}
-                                <label>{{ form.is_staff }} {{ form.is_staff.label }}</label><br>
-                                <label>{{ form.grant_view }} {{ form.grant_view.label }}</label><br>
-                                <label>{{ form.grant_change }} {{ form.grant_change.label }}</label><br>
-                                <button type="submit">Spara</button>
-                            </form>
-                        {% endwith %}
-                    </td>
-                    <td>
-                        {% if row.delete_form %}
-                            <form method="post" onsubmit="return confirm('Ta bort {{ user.username }}?');">
-                                {% csrf_token %}
-                                <input type="hidden" name="action" value="delete">
-                                {{ row.delete_form.user_id }}
-                                <button type="submit">Ta bort</button>
-                            </form>
+    <div class="grid gap-8 lg:grid-cols-2">
+        <div class="rounded-3xl bg-white px-6 py-8 shadow-sm ring-1 ring-gray-100">
+            <div class="border-b border-gray-100 pb-4">
+                <p class="text-sm font-semibold uppercase tracking-wide text-gray-500">Nytt konto</p>
+                <h2 class="mt-1 text-2xl font-semibold text-gray-900">Skapa användare</h2>
+                <p class="mt-1 text-sm text-gray-600">Lösenordet valideras mot Djangos standardregler.</p>
+            </div>
+            <form method="post" class="mt-6 space-y-4">
+                {% csrf_token %}
+                <input type="hidden" name="action" value="create">
+                {% for field in create_form %}
+                    <div>
+                        <label class="text-sm font-medium text-gray-700" for="{{ field.id_for_label }}">{{ field.label }}</label>
+                        {% if field.is_hidden %}
+                            {{ field }}
                         {% else %}
-                            <em>—</em>
+                            <input
+                                type="{{ field.field.widget.input_type|default:'text' }}"
+                                name="{{ field.html_name }}"
+                                id="{{ field.id_for_label }}"
+                                value="{{ field.value|default_if_none:'' }}"
+                                class="mt-1 block w-full rounded-xl border border-gray-200 px-3 py-2 text-sm shadow-sm focus:border-brand-600 focus:outline-none focus:ring-2 focus:ring-brand-600"
+                                {% if field.field.required %}required{% endif %}
+                                {% if field.field.widget.attrs.autocomplete %}autocomplete="{{ field.field.widget.attrs.autocomplete }}"{% endif %}
+                                {% if field.field.widget.attrs.autofocus %}autofocus{% endif %}
+                            />
                         {% endif %}
-                    </td>
-                </tr>
+                        {% if field.help_text %}
+                            <p class="mt-1 text-xs text-gray-500">{{ field.help_text }}</p>
+                        {% endif %}
+                        {% for error in field.errors %}
+                            <p class="mt-1 text-sm text-rose-600">{{ error }}</p>
+                        {% endfor %}
+                    </div>
+                {% endfor %}
+                <button type="submit" class="w-full rounded-2xl bg-brand-600 px-4 py-3 text-sm font-semibold text-white transition hover:bg-brand-700 focus:outline-none focus-visible:ring-2 focus-visible:ring-brand-600 focus-visible:ring-offset-2">
+                    Skapa användare
+                </button>
+            </form>
+        </div>
+
+        <div class="rounded-3xl bg-slate-900 px-6 py-8 text-slate-100 shadow-sm ring-1 ring-slate-800">
+            <h3 class="text-2xl font-semibold">Tips för kontohantering</h3>
+            <ul class="mt-4 space-y-3 text-sm text-slate-300 break-words">
+                <li class="flex items-start gap-3">
+                    <span class="mt-1 h-2 w-2 rounded-full bg-brand-400"></span>
+                    <span class="min-w-0">Lägg användare i grupper via Django admin om flera personer ska dela samma roll.</span>
+                </li>
+                <li class="flex items-start gap-3">
+                    <span class="mt-1 h-2 w-2 rounded-full bg-brand-400"></span>
+                    <span class="min-w-0">
+                        Behörigheterna <code class="break-normal rounded bg-slate-800 px-2 py-1 text-xs">claims.view_claim</code>
+                        och <code class="break-normal rounded bg-slate-800 px-2 py-1 text-xs">claims.change_claim</code>
+                        styr åtkomst till adminvyn respektive beslutsflödet.
+                    </span>
+                </li>
+                <li class="flex items-start gap-3">
+                    <span class="mt-1 h-2 w-2 rounded-full bg-brand-400"></span>
+                    <span class="min-w-0">En markerad <strong>Admin/staff</strong>-användare kan nå Django admin och skapa projekt, exportflöden m.m.</span>
+                </li>
+                <li class="flex items-start gap-3">
+                    <span class="mt-1 h-2 w-2 rounded-full bg-brand-400"></span>
+                    <span class="min-w-0">Ta bara bort konton du är säker på – historik försvinner inte, men personen tappar all åtkomst.</span>
+                </li>
+            </ul>
+        </div>
+    </div>
+
+    <section class="space-y-6">
+        <div>
+            <p class="text-sm font-semibold uppercase tracking-wide text-gray-500">Befintliga användare</p>
+            <h2 class="text-2xl font-semibold text-gray-900">Justera behörigheter</h2>
+        </div>
+        <div class="space-y-4">
+            {% for row in user_rows %}
+                {% with user=row.user form=row.permission_form delete_form=row.delete_form %}
+                <article class="rounded-3xl bg-white px-6 py-6 shadow-sm ring-1 ring-gray-100">
+                    <div class="flex flex-col gap-4 border-b border-gray-100 pb-4 md:flex-row md:items-center md:justify-between">
+                        <div>
+                            <div class="flex items-center gap-3">
+                                <h3 class="text-xl font-semibold text-gray-900">{{ user.username }}</h3>
+                                {% if user.is_superuser %}
+                                    <span class="rounded-full bg-emerald-50 px-3 py-1 text-xs font-semibold uppercase tracking-wide text-emerald-700">Superuser</span>
+                                {% endif %}
+                            </div>
+                            <p class="text-sm text-gray-600">
+                                {{ user.get_full_name|default:"Saknar namn" }} · {{ user.email|default:"Ingen e-post" }}
+                            </p>
+                        </div>
+                        <p class="text-xs uppercase tracking-wide text-gray-400">
+                            ID: {{ user.id }}
+                        </p>
+                    </div>
+                    <div class="mt-4 grid gap-6 lg:grid-cols-[2fr,1fr]">
+                        <form method="post" class="space-y-4 rounded-2xl bg-slate-50 p-4">
+                            {% csrf_token %}
+                            <input type="hidden" name="action" value="update">
+                            {{ form.user_id }}
+                        <div class="space-y-3 text-sm text-gray-700">
+                            <label class="flex items-center gap-2" for="{{ form.is_staff.id_for_label }}">
+                                <input type="checkbox"
+                                       id="{{ form.is_staff.id_for_label }}"
+                                       name="{{ form.is_staff.html_name }}"
+                                       value="on"
+                                       {% if form.is_staff.value %}checked{% endif %}
+                                       class="h-4 w-4 rounded border-gray-300 text-brand-600 focus:ring-brand-600">
+                                <span>Admin/staff</span>
+                            </label>
+                            <label class="flex items-center gap-2" for="{{ form.grant_view.id_for_label }}">
+                                <input type="checkbox"
+                                       id="{{ form.grant_view.id_for_label }}"
+                                       name="{{ form.grant_view.html_name }}"
+                                       value="on"
+                                       {% if form.grant_view.value %}checked{% endif %}
+                                       class="h-4 w-4 rounded border-gray-300 text-brand-600 focus:ring-brand-600">
+                                <span>Får se utlägg</span>
+                            </label>
+                            <label class="flex items-center gap-2" for="{{ form.grant_change.id_for_label }}">
+                                <input type="checkbox"
+                                       id="{{ form.grant_change.id_for_label }}"
+                                       name="{{ form.grant_change.html_name }}"
+                                       value="on"
+                                       {% if form.grant_change.value %}checked{% endif %}
+                                       class="h-4 w-4 rounded border-gray-300 text-brand-600 focus:ring-brand-600">
+                                <span>Får besluta utlägg</span>
+                            </label>
+                        </div>
+                            <button type="submit" class="w-full rounded-2xl bg-brand-600 px-4 py-2 text-sm font-semibold text-white transition hover:bg-brand-700">
+                                Spara behörigheter
+                            </button>
+                        </form>
+                        <div class="rounded-2xl border border-red-100 bg-red-50 p-4 text-sm text-red-800">
+                            <p class="font-semibold">Ta bort konto</p>
+                            {% if delete_form %}
+                                <p class="mt-1 text-xs text-red-700">Åtgärden går inte att ångra. Användaren förlorar omedelbart åtkomst.</p>
+                                <form method="post" class="mt-4" onsubmit="return confirm('Ta bort {{ user.username }}?');">
+                                    {% csrf_token %}
+                                    <input type="hidden" name="action" value="delete">
+                                    {{ delete_form.user_id }}
+                                    <button type="submit" class="w-full rounded-full bg-red-600 px-4 py-2 text-xs font-semibold text-white transition hover:bg-red-700">
+                                        Ta bort användare
+                                    </button>
+                                </form>
+                            {% else %}
+                                <p class="mt-2 text-xs text-red-700">Kan inte tas bort (antingen du själv eller superuser).</p>
+                            {% endif %}
+                        </div>
+                    </div>
+                </article>
                 {% endwith %}
             {% empty %}
-                <tr><td colspan="5">Inga användare upplagda.</td></tr>
+                <div class="rounded-3xl border border-dashed border-gray-200 bg-white px-6 py-10 text-center text-gray-500">
+                    <p class="text-lg font-semibold text-gray-900">Inga användare ännu</p>
+                    <p class="mt-2 text-sm">Skapa det första kontot via formuläret ovan.</p>
+                </div>
             {% endfor %}
-            </tbody>
-        </table>
+        </div>
     </section>
+</section>
 {% endblock %}
diff --git a/claims/urls.py b/claims/urls.py
index 5dfa971..4f06a76 100644
--- a/claims/urls.py
+++ b/claims/urls.py
@@ -6,12 +6,14 @@ from .views import (
     MyClaimsView,
     SubmitClaimView,
     UserManagementView,
+    SubmitClaimSuccessView,
 )
 
 app_name = "claims"
 
 urlpatterns = [
     path("new/", SubmitClaimView.as_view(), name="submit"),
+    path("submitted/", SubmitClaimSuccessView.as_view(), name="submit-success"),
     path("admin/", ClaimAdminListView.as_view(), name="admin-list"),
     path("export/", ClaimExportMenuView.as_view(), name="export"),
     path("mine/", MyClaimsView.as_view(), name="my-claims"),
diff --git a/claims/views.py b/claims/views.py
index 3e0716c..9406a76 100644
--- a/claims/views.py
+++ b/claims/views.py
@@ -1,3 +1,4 @@
+from django.conf import settings
 from django.contrib import messages
 from django.contrib.auth import get_user_model
 from django.contrib.auth.models import Permission
@@ -5,6 +6,7 @@ from django.contrib.auth.mixins import LoginRequiredMixin, PermissionRequiredMix
 from django.forms import formset_factory
 from django.shortcuts import get_object_or_404, redirect, render
 from django.urls import reverse
+from django.utils import timezone
 from django.views import View
 from django.views.generic import ListView, TemplateView
 
@@ -16,7 +18,7 @@ from .forms import (
     UserManagementForm,
     UserPermissionForm,
 )
-from .models import Claim, ClaimLog
+from .models import Claim, ClaimLog, SystemSetting
 
 User = get_user_model()
 
@@ -110,7 +112,7 @@ class SubmitClaimView(View):
 
             if created:
                 messages.success(request, f"{created} utlägg skickade in.")
-                return redirect(reverse("claims:admin-list"))
+                return redirect(reverse("claims:submit-success"))
 
             messages.error(request, "Inga utlägg kunde sparas. Fyll i minst en rad.")
         else:
@@ -133,7 +135,7 @@ class ClaimAdminListView(LoginRequiredMixin, PermissionRequiredMixin, ListView):
 
     def get_queryset(self):
         queryset = (
-            Claim.objects.select_related("submitted_by", "project")
+            Claim.objects.select_related("submitted_by", "project", "paid_by")
             .prefetch_related("logs__performed_by")
             .all()
         )
@@ -148,9 +150,16 @@ class ClaimAdminListView(LoginRequiredMixin, PermissionRequiredMixin, ListView):
         context["status_choices"] = Claim.Status.choices
         context["decision_choices"] = ClaimDecisionForm().fields["action"].choices
         context["can_change"] = self.request.user.has_perm("claims.change_claim")
+        context["payments_enabled"] = SystemSetting.internal_payments_active()
         return context
 
     def post(self, request, *args, **kwargs):
+        action_type = request.POST.get("action_type", "decision")
+        if action_type == "payment":
+            return self._handle_payment(request)
+        return self._handle_decision(request)
+
+    def _handle_decision(self, request):
         if not request.user.has_perm("claims.change_claim"):
             messages.error(request, "Du har inte behörighet att uppdatera utlägg.")
             return redirect(request.get_full_path())
@@ -165,6 +174,9 @@ class ClaimAdminListView(LoginRequiredMixin, PermissionRequiredMixin, ListView):
         claim = get_object_or_404(Claim, pk=form.cleaned_data["claim_id"])
         action = form.cleaned_data["action"]
         decision_note = form.cleaned_data.get("decision_note", "")
+        if claim.is_paid:
+            messages.error(request, "Utlägget är redan markerat som betalt och kan inte ändras.")
+            return redirect(request.get_full_path())
         previous_status = claim.status
         claim.decision_note = decision_note
 
@@ -185,6 +197,33 @@ class ClaimAdminListView(LoginRequiredMixin, PermissionRequiredMixin, ListView):
         )
         return redirect(request.get_full_path())
 
+    def _handle_payment(self, request):
+        if not SystemSetting.internal_payments_active():
+            messages.error(request, "Betalningshantering är inte aktiverad.")
+            return redirect(request.get_full_path())
+        if not request.user.has_perm("claims.change_claim"):
+            messages.error(request, "Du har inte behörighet att uppdatera utlägg.")
+            return redirect(request.get_full_path())
+
+        claim = get_object_or_404(Claim, pk=request.POST.get("payment_claim_id"))
+        if claim.status != Claim.Status.APPROVED:
+            messages.error(request, "Endast godkända utlägg kan markeras som betalda.")
+            return redirect(request.get_full_path())
+        if claim.is_paid:
+            messages.info(request, "Detta utlägg är redan markerat som betalt.")
+            return redirect(request.get_full_path())
+
+        claim.paid_by = request.user
+        claim.paid_at = timezone.now()
+        claim.save(update_fields=["paid_by", "paid_at"])
+        claim.add_log(
+            action=ClaimLog.Action.MARKED_PAID,
+            performed_by=request.user,
+            note="Markerad som betald via systemet.",
+        )
+        messages.success(request, f"{claim} markerades som betald.")
+        return redirect(request.get_full_path())
+
 
 class ClaimExportMenuView(LoginRequiredMixin, PermissionRequiredMixin, TemplateView):
     template_name = "claims/export_placeholder.html"
@@ -311,3 +350,7 @@ class UserManagementView(LoginRequiredMixin, PermissionRequiredMixin, TemplateVi
             user.user_permissions.add(perm)
         else:
             user.user_permissions.remove(perm)
+
+
+class SubmitClaimSuccessView(TemplateView):
+    template_name = "claims/submit_success.html"
diff --git a/claims_system/settings.py b/claims_system/settings.py
index 96c7151..31ef487 100644
--- a/claims_system/settings.py
+++ b/claims_system/settings.py
@@ -10,6 +10,7 @@ For the full list of settings and their values, see
 https://docs.djangoproject.com/en/5.2/ref/settings/
 """
 
+import os
 from pathlib import Path
 
 # Build paths inside the project like this: BASE_DIR / 'subdir'.
@@ -120,6 +121,10 @@ MEDIA_URL = '/media/'
 MEDIA_ROOT = BASE_DIR / 'media'
 
 LOGIN_REDIRECT_URL = '/claims/admin/'
+LOGOUT_REDIRECT_URL = '/accounts/login/'
+
+os.environ.setdefault("CLAIMS_ENABLE_INTERNAL_PAYMENTS", "true")
+CLAIMS_ENABLE_INTERNAL_PAYMENTS = os.getenv("CLAIMS_ENABLE_INTERNAL_PAYMENTS", "true").lower() in {"1", "true", "yes"}
 
 # Default primary key field type
 # https://docs.djangoproject.com/en/5.2/ref/settings/#default-auto-field
diff --git a/templates/registration/logged_out.html b/templates/registration/logged_out.html
new file mode 100644
index 0000000..bc48f7a
--- /dev/null
+++ b/templates/registration/logged_out.html
@@ -0,0 +1,19 @@
+{% extends "claims/base.html" %}
+
+{% block title %}Utloggad{% endblock %}
+
+{% block content %}
+<section class="flex min-h-[50vh] items-center justify-center py-10">
+    <div class="w-full max-w-md rounded-3xl bg-white px-8 py-10 text-center shadow-xl ring-1 ring-gray-100">
+        <p class="text-sm font-semibold uppercase tracking-wide text-brand-600">Du är utloggad</p>
+        <h1 class="mt-2 text-3xl font-semibold text-gray-900">Vi ses snart igen</h1>
+        <p class="mt-3 text-sm text-gray-600">
+            Din session är avslutad. Du kan när som helst logga in igen för att hantera utlägg eller administrera systemet.
+        </p>
+        <a href="{% url 'login' %}"
+           class="mt-6 inline-flex items-center justify-center rounded-full bg-brand-600 px-5 py-3 text-sm font-semibold text-white transition hover:bg-brand-700 focus:outline-none focus-visible:ring-2 focus-visible:ring-brand-600 focus-visible:ring-offset-2">
+            Till inloggningen
+        </a>
+    </div>
+</section>
+{% endblock %}
diff --git a/templates/registration/login.html b/templates/registration/login.html
index dc5bda4..cb4e0d6 100644
--- a/templates/registration/login.html
+++ b/templates/registration/login.html
@@ -3,11 +3,46 @@
 {% block title %}Logga in{% endblock %}
 
 {% block content %}
-  <h1>Logga in</h1>
-  <form method="post">
-    {% csrf_token %}
-    {{ form.as_p }}
-    <button type="submit">Logga in</button>
-    <input type="hidden" name="next" value="{{ next }}">
-  </form>
+<section class="flex min-h-[60vh] items-center justify-center py-12">
+    <div class="w-full max-w-md rounded-3xl bg-white px-8 py-10 shadow-xl ring-1 ring-gray-100">
+        <div class="text-center">
+            <p class="text-sm font-semibold uppercase tracking-wide text-brand-600">Välkommen tillbaka</p>
+            <h1 class="mt-2 text-3xl font-semibold text-gray-900">Logga in</h1>
+            <p class="mt-2 text-sm text-gray-600">Använd dina administratörsuppgifter för att hantera utlägg.</p>
+        </div>
+        <form method="post" class="mt-8 space-y-6">
+            {% csrf_token %}
+            <input type="hidden" name="next" value="{{ next }}">
+            {% for field in form %}
+                {% if field.is_hidden %}
+                    {{ field }}
+                {% else %}
+                    <div>
+                        <label class="text-sm font-medium text-gray-700" for="{{ field.id_for_label }}">{{ field.label }}</label>
+                        <input
+                            type="{{ field.field.widget.input_type|default:'text' }}"
+                            name="{{ field.html_name }}"
+                            id="{{ field.id_for_label }}"
+                            value="{{ field.value|default_if_none:'' }}"
+                            class="mt-1 block w-full rounded-xl border border-gray-200 px-3 py-2 text-sm shadow-sm focus:border-brand-600 focus:outline-none focus:ring-2 focus:ring-brand-600"
+                            {% if field.field.widget.attrs.autocomplete %}autocomplete="{{ field.field.widget.attrs.autocomplete }}"{% endif %}
+                            {% if field.field.required %}required{% endif %}
+                            {% if field.field.widget.attrs.autofocus %}autofocus{% endif %}
+                        />
+                        {% if field.help_text %}
+                            <p class="mt-1 text-xs text-gray-500">{{ field.help_text }}</p>
+                        {% endif %}
+                        {% for error in field.errors %}
+                            <p class="mt-1 text-sm text-rose-600">{{ error }}</p>
+                        {% endfor %}
+                    </div>
+                {% endif %}
+            {% endfor %}
+            <button type="submit" class="w-full rounded-2xl bg-brand-600 px-4 py-3 text-sm font-semibold text-white transition hover:bg-brand-700 focus:outline-none focus-visible:ring-2 focus-visible:ring-brand-600 focus-visible:ring-offset-2">
+                Logga in
+            </button>
+        </form>
+        <p class="mt-6 text-center text-xs text-gray-400">Behöver du ett konto? Kontakta en superuser i organisationen.</p>
+    </div>
+</section>
 {% endblock %}