About this site

About P800 Refund

Independent UK guidance for readers checking HMRC letters and official GOV.UK routes. We are not affiliated with HMRC or GOV.UK.

I started this site after receiving my own confusing P800 letter and realising how hard it can be to find a simple explanation in plain British English. P800 Refund is an independent information site for people in the UK who want to understand what a P800 means before they use any official service.

The editorial approach is straightforward: explain HMRC guidance and tax refund topics clearly, point readers towards official GOV.UK routes when they need to take action, and avoid pretending to be an official service. If you want the main overview first, start with the P800 refund guide or the P800 explainer.

Content is reviewed and updated as HMRC guidance changes, and key pages are checked against the current tax year. The site is currently being maintained with notes reviewed for the 2025/26 tax year. For important context about independence and limitations, please also read our Disclaimer and Privacy Policy.

Founder's note

What began as one confusing letter turned into a small project with a simple goal: make HMRC wording easier to follow without imitating HMRC itself. If a page here helps you understand your letter before you head to GOV.UK, it is doing the job it was built to do.

What this site aims to do

Understand P800 clearly

We explain the process without pretending to be HMRC or GOV.UK.

Plain-English HMRC guidance

We rewrite tax wording in plain British English so readers can act with more confidence.

Official GOV.UK routes first

We send readers back to GOV.UK when they need to claim, sign in or verify a route.

Editorial standards

The working rule on this site is simple: official guidance comes first. We check key GOV.UK pages, compare wording against current HMRC guidance, and update summaries when the route, timing or repayment rules change.

We also keep an eye on GOV.UK updates around tax calculations and repayment guidance so that plain-English summaries stay aligned with the current HMRC process. When a page depends on timing, the tax year and review date are shown clearly. If you need the practical next step after reading this page, go to the step-by-step claim guide.

Feedback

Found an error or want to suggest an improvement? You can reach the site at [email protected].

Where to go next

Return to the main guideGo back to the homepage for the full site overview and safest entry point.View the HMRC reference number sampleSee where the reference number and tax year usually appear on a P800 letter.Read the tax refund online guideMove to the practical guide if your letter says you can continue online.

Last updated: 9 April 2026