Tax Rebate P800 Explained – What It Is and How to Claim
Many people in the UK overpay their tax without even realising it. HMRC has a process to refund overpaid tax through the Tax Rebate P800. If you have received a P800 tax calculation, it means HMRC has reviewed your income and tax records and found that you have paid too much tax. In such cases, you may be entitled to a refund.
What is the Tax Rebate P800?
The tax rebate P800 is not a form you fill in yourself. Instead, it is a calculation issued by HMRC when they discover you have paid too much income tax.
You may receive a P800 letter if:
- You had more than one job or pension.
- You changed jobs during the tax year.
- You received benefits in kind.
- You were on the wrong tax code.
- HMRC records did not fully match your actual income or deductions.
If you are due a refund, the P800 tax rebate will show you the amount.
How Do You Receive a Tax Rebate P800?
- Letter from HMRC – HMRC will send you a P800 calculation.
- Check the details – Ensure income, tax codes, and allowances are correct.
- Claim online – If a refund is due, you can claim via your HMRC online account.
- Bank transfer or cheque – Refunds are usually paid directly into your account within 5 working days.
Claim online here: https://www.gov.uk/claim-tax-refund
Example Situations
- Case 1: Two Jobs
David worked two part-time jobs, but both employers used the full personal allowance tax code. HMRC spotted the error and sent a P800 tax rebate for £620. - Case 2: Job Change
Sophie switched employers mid-year. The new employer used a temporary tax code, leading to overpayment. She received a P800 refund of £340. - Case 3: Pension & Work
Alan received both a small pension and part-time earnings, which caused an overpayment of tax. HMRC issued a tax rebate P800 showing a £450 refund.
What If the Tax Rebate P800 is Wrong?
- Always check your P800 carefully.
- If you believe HMRC miscalculated, contact them immediately.
- Incorrect P800s can result in either underpayment or missing out on refunds.
Contact HMRC here: https://www.gov.uk/contact-hmrc
Common Issues with P800
❌ Not everyone receives a P800 – only when HMRC identifies overpayment.
❌ Sometimes refunds are automatically issued without the P800.
❌ You cannot request a P800 yourself; it’s generated by HMRC.
❌ If you owe tax, HMRC may adjust your tax code instead.
FAQs – Tax Rebate P800
Q1: How long does it take to get a P800 refund?
Once claimed online, refunds usually take 3–5 working days.
Q2: Can I get a P800 every year?
No, only if HMRC finds you overpaid tax.
Q3: What if I don’t claim my refund?
If you don’t claim online, HMRC will send a cheque, but it may take longer.
Q4: Do I need to use a tax agent?
Not always, but many people use advisors to check their codes, allowances, and ensure all refunds are claimed.
Q5: Can I backdate claims?
Yes, HMRC can go back up to four tax years for tax refunds.
Why Contact Audit Consulting Group?
At Audit Consulting Group, we specialise in helping clients with:
- Understanding their tax rebate P800.
- Checking calculations for accuracy.
- Claiming refunds quickly and correctly.
- Preventing errors that lead to underpayment notices.
We ensure you get every penny you are entitled to — with no stress, delays, or confusion.
Contact Audit Consulting Group today and let us manage your tax rebate claim with HMRC.
Official HMRC guidance: https://www.gov.uk/tax-overpayments-and-underpayments/if-youre-due-a-refund
