What is a P800 refund?
It usually means HMRC believes you paid too much tax and may be due money back after reviewing your tax position for the year.
Independent UK guide
P800 Refund Guide: How to Claim a UK Tax Refund Safely
Independent guidance for the 2025/26 tax year. This site is not affiliated with HMRC or GOV.UK.
Got a P800 letter from HMRC? This guide explains what a P800 means, whether you may be due a refund, and how to use the correct GOV.UK route if you need to claim safely online.
Use this page to understand your tax calculation, check HMRC letters, and move to the right next step for refunds, timing or official claim links.
What do you need to do?
Start with the step that matches your situation.
①
Just received a letter?
Check that it is genuine, confirm the tax year, and find out what the calculation means.
What is a P800? →②
Letter shows an overpayment?
Claim directly on GOV.UK using the official route. Never use links from texts or emails.
How to claim a P800 refund online →③
Waiting for a refund?
See when HMRC usually sends P800 refunds for the 2025/26 tax year.
When will I get my P800? →Need help with a specific letter?
If your situation does not match the guidance above, contact HMRC directly through the official Income Tax helpline or the relevant GOV.UK support route. We do not have access to your personal tax records, and this site cannot check or change individual refund cases.
Common questions
Can I claim a P800 refund online?
In many cases you can, but you should only use the correct official GOV.UK route and avoid suspicious links from messages or copied pages.
How long can a P800 refund take?
Refund timing depends on your route — online claims are the fastest, cheques take longer, and some are sent automatically. See the full timing guide for expected dates for each method.
How do I check whether a P800 link is genuine?
Start from GOV.UK directly or compare the page with trusted official guidance. Unexpected text links and copied URLs deserve extra caution.
Does this site process tax refunds?
No. This is an independent information site. It explains the process and points readers towards the official route, but it does not process claims itself.
Last updated: 16 May 2026