If you have uploaded receipts via the account, which have also been settled, the account must not be deleted for tax reasons. Invoiced receipts must be stored for 8 years according to the German Fiscal Code (AO) ( Abgabenordnung (AO) - § 147 Ordnungsvorschriften für die Aufbewahrung von Unterlagen ). The storage of this data is permitted under GDPR Art 6. paragraph 1 lit c. However, you can of course have the account deactivated by your employer. Please contact your HR department for this purpose.