Do I need to retain expense receipts?

Yes, you must keep receipts of your expenses for six years.

You can keep electronic copies of receipts instead of the originals if you prefer. It is important to ensure that the scans taken are legible, complete and that you keep the data safe and backed up. If for any reason you were to loose your data and HMRC requested evidence, you could be landed with an unexpected tax bill if you can’t provide the information.