diff --git a/src/App.tsx b/src/App.tsx
index 086f5bb30..e984cf6ae 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -76,6 +76,7 @@ const ComplianceReviewScreen = lazy(() => import('./screens/compliance-review.sc
 const ComplianceCallQueuesScreen = lazy(() => import('./screens/compliance-call-queues.screen'));
 const ComplianceCallQueueScreen = lazy(() => import('./screens/compliance-call-queue.screen'));
 const ComplianceCallQueueDetailScreen = lazy(() => import('./screens/compliance-call-queue-detail.screen'));
+const ComplianceNotFoundScreen = lazy(() => import('./screens/compliance-not-found.screen'));
 const SupportDashboardOverviewScreen = lazy(() => import('./screens/support-dashboard-overview.screen'));
 const SupportDashboardScreen = lazy(() => import('./screens/support-dashboard.screen'));
 const SupportDashboardIssueScreen = lazy(() => import('./screens/support-dashboard-issue.screen'));
@@ -462,6 +463,12 @@ export const Routes = [
         path: 'compliance/call-queues/:queue/:userDataId',
         element: withSuspense(<ComplianceCallQueueDetailScreen />),
       },
+      // Must stay last among the compliance routes: React Router ranks static segments above a splat,
+      // so this only matches paths none of the screens above claim.
+      {
+        path: 'compliance/*',
+        element: withSuspense(<ComplianceNotFoundScreen />),
+      },
       {
         path: 'sitemap',
         element: withSuspense(<SitemapScreen />),
diff --git a/src/__tests__/compliance-chargeback-list.screen.test.tsx b/src/__tests__/compliance-chargeback-list.screen.test.tsx
index 16435eebc..86ba778d7 100644
--- a/src/__tests__/compliance-chargeback-list.screen.test.tsx
+++ b/src/__tests__/compliance-chargeback-list.screen.test.tsx
@@ -5,6 +5,7 @@
 let mockIsLoggedIn = true;
 const mockGetPendingChargebacks = jest.fn();
 const mockNavigate = jest.fn();
+const mockUseComplianceGuard = jest.fn();
 
 jest.mock('@dfx.swiss/react', () => ({
   useSessionContext: () => ({ isLoggedIn: mockIsLoggedIn }),
@@ -23,7 +24,7 @@ jest.mock('src/components/error-hint', () => ({
 }));
 
 jest.mock('src/hooks/guard.hook', () => ({
-  useComplianceGuard: () => undefined,
+  useComplianceGuard: (...args: unknown[]) => mockUseComplianceGuard(...args),
 }));
 
 jest.mock('src/hooks/layout-config.hook', () => ({
@@ -104,6 +105,18 @@ describe('ComplianceChargebackListScreen', () => {
     mockGetPendingChargebacks.mockResolvedValue(asTransport([]));
   });
 
+  // The role guard is all that stands between an unauthorised role and this screen, and it is mocked
+  // out in every other test here — so without this assertion the screen could lose the call and the
+  // whole suite would stay green (issue #1306 suspected exactly that). Asserting the argument list is
+  // empty covers the quieter mutation too: the hook's signature is
+  // `useComplianceGuard(redirectPath = '/', isActive = true)`, so `useComplianceGuard(undefined, false)`
+  // would keep the call and still leave the guard inert.
+  it('calls the compliance guard on render, with the guard left active', () => {
+    render(<ComplianceChargebackListScreen />);
+
+    expect(mockUseComplianceGuard).toHaveBeenCalledWith();
+  });
+
   it('does not fetch when not logged in', () => {
     mockIsLoggedIn = false;
     render(<ComplianceChargebackListScreen />);
diff --git a/src/__tests__/compliance-not-found.screen.test.tsx b/src/__tests__/compliance-not-found.screen.test.tsx
new file mode 100644
index 000000000..041d456f0
--- /dev/null
+++ b/src/__tests__/compliance-not-found.screen.test.tsx
@@ -0,0 +1,47 @@
+// Unit tests for ComplianceNotFoundScreen: the guarded catch-all for unknown /compliance paths.
+
+const mockUseComplianceGuard = jest.fn();
+
+jest.mock('@dfx.swiss/react-components', () => ({
+  StyledVerticalStack: ({ children }: { children: React.ReactNode }) => <div>{children}</div>,
+}));
+
+jest.mock('react-router-dom', () => ({
+  useLocation: () => ({ pathname: '/compliance/does-not-exist' }),
+}));
+
+jest.mock('src/contexts/settings.context', () => ({
+  useSettingsContext: () => ({ translate: (_ns: string, key: string) => key }),
+}));
+
+jest.mock('src/hooks/guard.hook', () => ({
+  useComplianceGuard: (...args: unknown[]) => mockUseComplianceGuard(...args),
+}));
+
+jest.mock('src/hooks/layout-config.hook', () => ({
+  useLayoutOptions: () => undefined,
+}));
+
+import { render, screen } from '@testing-library/react';
+import ComplianceNotFoundScreen from 'src/screens/compliance-not-found.screen';
+
+describe('ComplianceNotFoundScreen', () => {
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  // The whole point of this screen: an unknown compliance path must still run the role guard, so an
+  // unauthorised role is sent away instead of parked on a /compliance URL (issue #1306).
+  it('calls the compliance guard on render, with the guard left active', () => {
+    render(<ComplianceNotFoundScreen />);
+
+    expect(mockUseComplianceGuard).toHaveBeenCalledWith();
+  });
+
+  it('names the missing page and shows the path that was requested', () => {
+    render(<ComplianceNotFoundScreen />);
+
+    expect(screen.getByText('This compliance page does not exist')).toBeInTheDocument();
+    expect(screen.getByText('/compliance/does-not-exist')).toBeInTheDocument();
+  });
+});
diff --git a/src/screens/compliance-not-found.screen.tsx b/src/screens/compliance-not-found.screen.tsx
new file mode 100644
index 000000000..3c5c83943
--- /dev/null
+++ b/src/screens/compliance-not-found.screen.tsx
@@ -0,0 +1,24 @@
+import { StyledVerticalStack } from '@dfx.swiss/react-components';
+import { useLocation } from 'react-router-dom';
+import { useSettingsContext } from 'src/contexts/settings.context';
+import { useComplianceGuard } from 'src/hooks/guard.hook';
+import { useLayoutOptions } from 'src/hooks/layout-config.hook';
+
+// Catch-all for every unknown path below /compliance. Without it such a URL matches no route at all,
+// so the router falls back to its errorElement — a screen that runs outside every guard and leaves the
+// address bar untouched, which parks an unauthorised role on a /compliance URL (issue #1306). Guarding
+// the catch-all makes the role check independent of whether a given compliance screen exists.
+export default function ComplianceNotFoundScreen(): JSX.Element {
+  useComplianceGuard();
+  useLayoutOptions({ title: 'Not found', backButton: true });
+
+  const { translate } = useSettingsContext();
+  const { pathname } = useLocation();
+
+  return (
+    <StyledVerticalStack gap={4} full center>
+      <h2 className="text-dfxBlue-800">{translate('screens/compliance', 'This compliance page does not exist')}</h2>
+      <p className="text-dfxGray-700 text-sm">{pathname}</p>
+    </StyledVerticalStack>
+  );
+}