Overview

• HMRC began a June to August mail-out of P800 tax calculation letters on July 9, notifying roughly four million households of income tax overpayments.
• The letters detail each recipient’s refund amount and explain how to claim via a secure Gov.uk tax account or receive a cheque by post.
• HMRC pledges to process online claims within five working days and send cheques automatically within 14 days, consolidating multiple years’ refunds into a single payment.
• Common overpayment triggers include incorrect tax codes, multiple employments or pensions, and income fluctuations.
• Financial crime experts warn that scammers are exploiting the rebate mail-out and urge taxpayers to ignore any unrequested calls, texts or emails claiming to be from HMRC.