HMRC to Dispatch Tax Refund Letters with Average £689 Payout in Coming Days
HM Revenue and Customs (HMRC) is preparing to send out letters to millions of workers across the UK in the coming days, which could result in a significant financial boost for households. These communications, known as P800 letters, are issued to individuals who have overpaid on their taxes, with the average refund amount standing at £689.
Understanding the P800 Tax Calculation Letter
The P800 letter serves as a tax calculation document that informs recipients whether they owe additional tax or are due a refund. According to recent data from Canada Life, approximately 31% of adults have been placed on an incorrect tax code at some point, leading to these overpayments. The letter provides detailed instructions on how to claim any refund owed.
To claim a refund, individuals must use the reference number from their P800 letter along with their National Insurance number. They can opt for an online bank transfer, which processes the payment within five working days, or request a cheque online, which takes up to six weeks to arrive.
Common Reasons for Tax Overpayments
Several scenarios can trigger the issuance of a P800 letter. These include being placed on the wrong tax code due to HMRC having inaccurate income information, finishing one job and starting another within the same month while receiving pay from both, or beginning to receive a workplace pension. Additionally, individuals who have received Employment and Support Allowance or Jobseeker’s Allowance from the Department for Work and Pensions (DWP) may also be affected.
Decoding Tax Codes: What They Mean
Understanding tax codes is crucial for ensuring accurate tax payments. Below is a list of common tax codes and their meanings:
- L – Entitles you to the standard tax-free Personal Allowance. The most common code is 1257L.
- M – Marriage Allowance: you have received a transfer of 10% of your partner’s personal allowance (£1,257).
- N – Marriage Allowance: you have transferred 10% of your personal allowance to your partner.
- S – Your income or pension is taxed using the rates in Scotland.
- T – Your tax code includes other calculations to determine your personal allowance, such as reductions for estimated annual income over £100,000.
- 0T – Your personal allowance has been used up, or you have started a new job without providing necessary details for a tax code.
- BR – All income from this job or pension is taxed at the basic rate, typically used for multiple jobs or pensions.
- D0 – All income from this job or pension is taxed at the higher rate, usually for multiple income sources.
- D1 – All income from this job or pension is taxed at the additional rate, often for those with several jobs or pensions.
- NT – You are not paying any tax on this income.
- K codes – Indicate income that is not taxed another way and exceeds your tax-free allowance.
This initiative by HMRC aims to rectify tax discrepancies and provide timely refunds to eligible workers, offering a welcome financial relief to many UK households during these times.



