Claim back overpaid tax in the UK
GOV.UK has a free checker for claiming back overpaid tax. If you are employed or get a pension and paid too much, HMRC usually sends a P800 letter between June and March.
Where to look
Check how to claim a tax refund (HMRC)
Find out how to claim back tax you overpaid on pay, job expenses, a pension, savings interest, redundancy pay or other income.
How: Free on GOV.UK. Employees and pensioners who paid too much usually get a P800 letter between June and March after the tax year ends.
Checked 28 September 2026 · Source: gov.uk
Try the free services first
The main UK tracing services are free: My Lost Account, the Pension Tracing Service, HMRC's tools and Gretel. Some paid services exist, so try the free ones first. Never pay an upfront fee or give card details to "release" money.
Quick answers
- How do I claim back overpaid tax in the UK?
- GOV.UK has a free checker for claiming back overpaid tax. If you are employed or get a pension and paid too much, HMRC usually sends a P800 letter between June and March.
- What is Check how to claim a tax refund (HMRC)?
- Find out how to claim back tax you overpaid on pay, job expenses, a pension, savings interest, redundancy pay or other income. Free on GOV.UK. Employees and pensioners who paid too much usually get a P800 letter between June and March after the tax year ends.
Sources
Ask Find My Money yourself
Type what you are looking for in the UK and get the free official tracing service. Open Find My Money, free, no sign-up.
In Claude or any app that takes MCP connectors, add https://goodturn-mcp.pages.dev/findmymoney/mcp and ask: “How do I claim back overpaid tax in the UK?”
More UK guides
- All UK tracing services
- Lost bank and building society accounts
- Lost pensions
- Child Trust Funds and investments
- Premium Bonds
- Someone who died
- Life insurance
In the US? See Unclaimed IRS tax refund.