diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8cd977bc..40eed1cc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Change history for ui-quick-marc
 
+## [8.0.2] (IN PROGRESS)
+
+* [UIQM-735](https://issues.folio.org/browse/UIQM-735) Return also sub permissions in `useUserTenantPermissions` hook.
+
 ## [8.0.1] (https://github.com/folio-org/ui-quick-marc/tree/v8.0.1) (2024-04-18)
 
 * [UIQM-641](https://issues.folio.org/browse/UIQM-641) Call `cleanBytesFields` function with correct arguments to fix 008 field.
diff --git a/src/MarcRoute/MarcRoute.js b/src/MarcRoute/MarcRoute.js
index d6a17316..94c74c3a 100644
--- a/src/MarcRoute/MarcRoute.js
+++ b/src/MarcRoute/MarcRoute.js
@@ -44,7 +44,7 @@ const MarcRoute = ({
   });
 
   const checkCentralTenantPerm = useCallback((perm) => {
-    return centralTenantPermissions.some(({ permissionName }) => permissionName === perm);
+    return centralTenantPermissions.has(perm);
   }, [centralTenantPermissions]);
 
   if (isCentralTenantPermissionsLoading) {
diff --git a/src/queries/useUserTenantPermissions/useUserTenantPermissions.js b/src/queries/useUserTenantPermissions/useUserTenantPermissions.js
index 8bdbf31c..66e322d7 100644
--- a/src/queries/useUserTenantPermissions/useUserTenantPermissions.js
+++ b/src/queries/useUserTenantPermissions/useUserTenantPermissions.js
@@ -1,3 +1,4 @@
+import { useMemo } from 'react';
 import { useQuery } from 'react-query';
 
 import {
@@ -48,10 +49,26 @@ const useUserTenantPermissions = (
     },
   );
 
+  const centralTenantPermissions = data.permissionNames || INITIAL_DATA;
+
+  const flattenCentralTenantPermissions = useMemo(() => {
+    const permSet = new Set();
+
+    centralTenantPermissions.forEach(perm => {
+      permSet.add(perm.permissionName);
+
+      perm.subPermissions?.forEach(subPermission => {
+        permSet.add(subPermission);
+      });
+    });
+
+    return permSet;
+  }, [centralTenantPermissions]);
+
   return ({
     isFetching,
     isLoading,
-    userPermissions: data.permissionNames || INITIAL_DATA,
+    userPermissions: flattenCentralTenantPermissions,
     totalRecords: data.totalRecords,
   });
 };
diff --git a/src/queries/useUserTenantPermissions/useUserTenantPermissions.test.js b/src/queries/useUserTenantPermissions/useUserTenantPermissions.test.js
index 53004a4f..a0427720 100644
--- a/src/queries/useUserTenantPermissions/useUserTenantPermissions.test.js
+++ b/src/queries/useUserTenantPermissions/useUserTenantPermissions.test.js
@@ -18,7 +18,16 @@ const wrapper = ({ children }) => (
 );
 
 const response = {
-  permissionNames: [],
+  permissionNames: [
+    {
+      permissionName: 'permissionName1',
+      subPermissions: ['subPermissions1', 'subPermissions2'],
+    },
+    {
+      permissionName: 'permissionName2',
+      subPermissions: ['subPermissions1', 'subPermissions3'],
+    },
+  ],
   totalRecords: 0,
 };
 
@@ -54,4 +63,22 @@ describe('useUserTenantPermissions', () => {
     expect(setHeaderMock).toHaveBeenCalledWith('X-Okapi-Tenant', options.tenantId);
     expect(getMock).toHaveBeenCalledWith(`perms/users/${options.userId}/permissions`, expect.objectContaining({}));
   });
+
+  it('should consider sub permissions without duplicates', async () => {
+    const options = {
+      userId: 'userId',
+      tenantId: 'tenantId',
+    };
+    const { result } = renderHook(() => useUserTenantPermissions(options), { wrapper });
+
+    await act(async () => !result.current.isLoading);
+
+    expect([...result.current.userPermissions]).toEqual([
+      'permissionName1',
+      'subPermissions1',
+      'subPermissions2',
+      'permissionName2',
+      'subPermissions3',
+    ]);
+  });
 });