Overview

• On July 23, HMRC highlighted that almost one million UK households have yet to claim overpayments flagged in P800 letters.
• Four million P800 tax calculation letters are being mailed between June and 30 November to notify taxpayers of potential refunds.
• Taxpayers must initiate refund claims via Gov.uk, their personal tax account, the HMRC app, or by returning a form by post because refunds are not issued automatically.
• Online claims are processed within five working days for a bank transfer and cheques arrive within six weeks of request.
• HMRC and consumer experts warn against impersonation scams and stress that the authority will not contact individuals unexpectedly to request bank details or payments.