diff --git a/src/allmende_payment_system/api/admin.py b/src/allmende_payment_system/api/admin.py
index 10b812f..2ad1020 100644
--- a/src/allmende_payment_system/api/admin.py
+++ b/src/allmende_payment_system/api/admin.py
@@ -2,6 +2,7 @@ from typing import Annotated
 
 from fastapi import APIRouter, File, Form, HTTPException, Request
 from sqlalchemy import select
+from sqlalchemy.exc import IntegrityError
 from starlette import status
 from starlette.responses import RedirectResponse
 
@@ -12,6 +13,7 @@ from allmende_payment_system.models import (
     Area,
     Permission,
     Product,
+    Transaction,
     User,
     UserGroup,
 )
@@ -296,8 +298,78 @@ async def get_accounts(
     templates = get_jinja_renderer()
 
     accounts = session.scalars(select(Account)).all()
+    users = session.scalars(select(User)).all()
 
     return templates.TemplateResponse(
         "accounts.html.jinja",
-        context={"request": request, "accounts": accounts},
+        context={"request": request, "accounts": accounts, "users": users},
+    )
+
+
+@admin_router.post("/accounts/new")
+async def create_account(
+    request: Request,
+    session: SessionDep,
+    user: UserDep,
+    account_name: Annotated[str, Form()],
+):
+    if not user.has_permission("account", "edit"):
+        raise HTTPException(status_code=403, detail="Insufficient permissions")
+
+    account = Account(name=account_name)
+    session.add(account)
+    try:
+        session.flush()
+    except IntegrityError as e:
+        session.rollback()
+        raise HTTPException(
+            status_code=400, detail="Account with this name already exists"
+        ) from e
+    return RedirectResponse(
+        url="/admin/accounts", status_code=status.HTTP_303_SEE_OTHER
+    )
+
+
+@admin_router.post("/accounts/{account_id}/add_user")
+async def add_user_to_account(
+    request: Request,
+    session: SessionDep,
+    user: UserDep,
+    account_id: int,
+    user_id: Annotated[int, Form()],
+):
+    if not user.has_permission("account", "edit"):
+        raise HTTPException(status_code=403, detail="Insufficient permissions")
+
+    account = session.execute(
+        select(Account).where(Account.id == account_id)
+    ).scalar_one()
+    user_to_add = session.execute(select(User).where(User.id == user_id)).scalar_one()
+
+    account.users.append(user_to_add)
+
+    return RedirectResponse(
+        url="/admin/accounts", status_code=status.HTTP_303_SEE_OTHER
+    )
+
+
+@admin_router.post("/accounts/{account_id}/add_balance")
+async def add_balance_to_account(
+    request: Request,
+    session: SessionDep,
+    user: UserDep,
+    account_id: int,
+    amount: Annotated[float, Form()],
+):
+    if not user.has_permission("account", "edit"):
+        raise HTTPException(status_code=403, detail="Insufficient permissions")
+
+    account = session.execute(
+        select(Account).where(Account.id == account_id)
+    ).scalar_one()
+
+    account.transactions.append(Transaction(type="deposit", total_amount=amount))
+
+    return RedirectResponse(
+        url="/admin/accounts", status_code=status.HTTP_303_SEE_OTHER
     )
diff --git a/src/allmende_payment_system/templates/accounts.html.jinja b/src/allmende_payment_system/templates/accounts.html.jinja
index e5977b7..5cdbc30 100644
--- a/src/allmende_payment_system/templates/accounts.html.jinja
+++ b/src/allmende_payment_system/templates/accounts.html.jinja
@@ -2,7 +2,30 @@
 {% block content %}
     <div class="mb-4">
         <h2 class="h4 mb-3">Konten verwalten</h2>
-        <a class="btn btn-primary" href="/admin/accounts/new">Neues Konto erstellen</a>
+        <button type="button" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#newAccountModal">Neues Konto erstellen</button>
+    </div>
+
+    <div class="modal fade" id="newAccountModal" tabindex="-1" aria-labelledby="newAccountModalLabel" aria-hidden="true">
+        <div class="modal-dialog">
+            <div class="modal-content">
+                <form method="post" action="/admin/accounts/new">
+                    <div class="modal-header">
+                        <h5 class="modal-title" id="newAccountModalLabel">Neues Konto erstellen</h5>
+                        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Schließen"></button>
+                    </div>
+                    <div class="modal-body">
+                        <div class="mb-3">
+                            <label for="account_name" class="form-label">Name</label>
+                            <input type="text" class="form-control" id="account_name" name="account_name" required>
+                        </div>
+                    </div>
+                    <div class="modal-footer">
+                        <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Abbrechen</button>
+                        <button type="submit" class="btn btn-primary">Erstellen</button>
+                    </div>
+                </form>
+            </div>
+        </div>
     </div>
 
     {% if accounts|length == 0 %}
@@ -24,7 +47,63 @@
                             <td>{{ account.name }}</td>
                             <td>{{ account.users | map(attribute='display_name') | join(", ") }}</td>
                             <td>{{ account.balance | format_number }} €</td>
-                            <td> actions </td>
+                            <td>
+                                <button type="button" class="btn btn-sm btn-outline-primary" data-bs-toggle="modal" data-bs-target="#addUserModal-{{ account.id }}">Benutzer hinzufügen</button>
+                                <button type="button" class="btn btn-sm btn-outline-primary" data-bs-toggle="modal" data-bs-target="#addBalanceModal-{{ account.id }}">Guthaben hinzufügen</button>
+
+                                {# ADD USER #}
+                                <div class="modal fade" id="addUserModal-{{ account.id }}" tabindex="-1" aria-labelledby="addUserModalLabel-{{ account.id }}" aria-hidden="true">
+                                    <div class="modal-dialog">
+                                        <div class="modal-content">
+                                            <form method="post" action="/admin/accounts/{{ account.id }}/add_user">
+                                                <div class="modal-header">
+                                                    <h5 class="modal-title" id="addUserModalLabel-{{ account.id }}">Benutzer zu {{ account.name }} hinzufügen</h5>
+                                                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Schließen"></button>
+                                                </div>
+                                                <div class="modal-body">
+                                                    <div class="mb-3">
+                                                        <label for="select-user-{{ account.id }}" class="form-label">Benutzer</label>
+                                                        <select class="form-select" id="select-user-{{ account.id }}" name="user_id" required>
+                                                            <option value="">-- auswählen --</option>
+                                                            {% for user in users if user not in account.users %}
+                                                                <option value="{{ user.id }}">{{ user.display_name }}</option>
+                                                            {% endfor %}
+                                                        </select>
+                                                    </div>
+                                                </div>
+                                                <div class="modal-footer">
+                                                    <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Abbrechen</button>
+                                                    <button type="submit" class="btn btn-primary">Hinzufügen</button>
+                                                </div>
+                                            </form>
+                                        </div>
+                                    </div>
+                                </div>
+
+                                {# ADD BALANCE #}
+                                <div class="modal fade" id="addBalanceModal-{{ account.id }}" tabindex="-1" aria-labelledby="addBalanceModalLabel-{{ account.id }}" aria-hidden="true">
+                                    <div class="modal-dialog">
+                                        <div class="modal-content">
+                                            <form method="post" action="/admin/accounts/{{ account.id }}/add_balance">
+                                                <div class="modal-header">
+                                                    <h5 class="modal-title" id="addBalanceModalLabel-{{ account.id }}">Guthaben zu {{ account.name }} hinzufügen</h5>
+                                                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Schließen"></button>
+                                                </div>
+                                                <div class="modal-body">
+                                                    <div class="mb-3">
+                                                        <label for="amount" class="form-label">Betrag in €</label>
+                                                        <input type="number" min="0.01" step="0.01" class="form-control" id="amount" name="amount" required>
+                                                    </div>
+                                                </div>
+                                                <div class="modal-footer">
+                                                    <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Abbrechen</button>
+                                                    <button type="submit" class="btn btn-primary">Hinzufügen</button>
+                                                </div>
+                                            </form>
+                                        </div>
+                                    </div>
+                                </div>
+                            </td>
                         </tr>
                     {% endfor %}
                 </tbody>
diff --git a/test/test_admin.py b/test/test_admin.py
index e886c29..744bbc3 100644
--- a/test/test_admin.py
+++ b/test/test_admin.py
@@ -5,7 +5,7 @@ from sqlalchemy.orm import Session
 
 from allmende_payment_system.app import app
 from allmende_payment_system.database import ensure_user
-from allmende_payment_system.models import Permission, User, UserGroup
+from allmende_payment_system.models import Account, Permission, User, UserGroup
 
 
 @pytest.fixture
@@ -15,6 +15,7 @@ def admin_user(test_db):
 
     group = UserGroup(id=1, name="Admins")
     group.permissions.append(Permission(scope="user", action="edit"))
+    group.permissions.append(Permission(scope="account", action="edit"))
     user.user_groups.append(group)
     test_db.add(group)
     test_db.flush()
@@ -97,6 +98,7 @@ def test_group_add_permission_illegal_format(test_db, client, admin_user):
 
 def test_group_remove_permission(test_db, client, admin_user):
     group = test_db.query(UserGroup).scalar()
+    num_permissions_before = len(group.permissions)
     response = client.get(
         f"/admin/groups/{group.id}/remove_permission/1",
         user=admin_user,
@@ -104,7 +106,7 @@ def test_group_remove_permission(test_db, client, admin_user):
     )
     assert response.status_code == 303
     group = test_db.execute(select(UserGroup).where(UserGroup.id == group.id)).scalar()
-    assert 0 == len(group.permissions)
+    assert num_permissions_before - 1 == len(group.permissions)
 
 
 def test_create_group(test_db, client, admin_user):
@@ -128,3 +130,60 @@ def test_delete_group(test_db, client, admin_user):
         test_db.execute(select(UserGroup).where(UserGroup.id == group.id)).scalar()
         is None
     )
+
+
+def test_create_account(test_db, client, admin_user):
+    response = client.post(
+        "/admin/accounts/new",
+        data={"account_name": "New Account"},
+        user=admin_user,
+        follow_redirects=False,
+    )
+    assert response.status_code == 303
+    assert test_db.query(Account).filter_by(name="New Account").scalar() is not None
+
+    # try to create another account with the same name, should fail
+    response = client.post(
+        "/admin/accounts/new",
+        data={"account_name": "New Account"},
+        user=admin_user,
+        follow_redirects=False,
+    )
+    assert response.status_code == 400
+
+
+def test_add_user_to_account(test_db, client, admin_user):
+    user_info = {"username": "test", "display_name": "Display Test"}
+    user = ensure_user(user_info, test_db)
+
+    account = Account(name="Test Account")
+    test_db.add(account)
+    test_db.flush()
+
+    response = client.post(
+        f"/admin/accounts/{account.id}/add_user",
+        data={"user_id": user.id},
+        user=admin_user,
+        follow_redirects=False,
+    )
+    assert response.status_code == 303
+
+    account = test_db.execute(select(Account).where(Account.id == account.id)).scalar()
+    assert any(u.username == "test" for u in account.users)
+
+
+def test_add_balance_to_account(test_db, client, admin_user):
+    account = Account(name="Test Account")
+    test_db.add(account)
+    test_db.flush()
+
+    response = client.post(
+        f"/admin/accounts/{account.id}/add_balance",
+        data={"amount": "100.00"},
+        user=admin_user,
+        follow_redirects=False,
+    )
+    assert response.status_code == 303
+
+    account = test_db.execute(select(Account).where(Account.id == account.id)).scalar()
+    assert account.balance == 100.00