How to Claim an HMRC Tax Refund in The UK (2025 Guide)

An HMRC tax refund occurs when you’ve paid more tax than you should have. In that case, you are due a refund from HMRC. If you’re wondering how to claim an HMRC tax refund in the UK, you’re not alone.
Thousands of people pay more tax than they need to and many don’t even realise they’re owed money. Whether you’re employed, self-employed, or have been overpaying tax in some other way, getting that refund is easier than you think.

Let’s dive into everything you need to know about claiming your tax refund from HMRC in 2025, including:

• How To Claim An HMRC Tax Refund
• How Does HMRC Refund Tax
• HMRC Tax Refund Timelines
• And Much More…

Let’s get started!

What Is A HMRC Tax Refund?

A HMRC tax refund is the money returned to you when you’ve paid more tax than you were supposed to.  It’s a common scenario for many UK taxpayers. Whether it’s because of overpayments or incorrect tax codes, HMRC may owe you money. This can happen for a range of reasons, including:

• Overpaid tax from your salary (PAYE)
• Wrong tax codes
• Tax deductions from savings or investments
• Self-employed individuals paying too much tax

How Does HMRC Refund Tax?

To refund overpaid tax, HM Revenue & Customs (HMRC) uses different methods depending on how you paid your tax.

• PAYE Tax Refund: After the tax year ends, HMRC reviews if employees paid too much tax. If so, they send a P800 letter. You must actively claim your refund via your Personal Tax Account or the HMRC app to receive a bank transfer. If you prefer a cheque, you must call HMRC to request one.
• Self-Assessment Tax Refund: If you are self-employed, you claim your refund directly on your annual tax return. You can specify whether to receive it via bank transfer, cheque, or have it offset against a future tax bill.
• Other Refunds: If you overpaid tax from changing jobs mid-year or leaving the UK, you can use specific forms (like a P50 or P85) to claim a refund directly from HMRC.

Will I Automatically Get a Tax Refund, or Do I Need to Apply?

HMRC used to issue tax refunds automatically, making things simpler for many people. However, from 31 May 2024 onwards, they stopped issuing all repayments automatically. Now, if your P800 calculation shows you’re due a tax refund, you will likely need to actively claim the refund yourself in order to receive it. So, if you expect a refund, make sure to follow up and submit your claim to get your money back.

What If I Don’t Claim My Tax Refund?

If you don’t claim the tax you’ve overpaid, you might miss out on money that’s rightfully yours. For most PAYE overpayments, HMRC requires taxpayers to actively claim their refund after receiving a P800 tax calculation. If you get a P800 telling you that you can claim online, make sure to do so. The refund will remain on your tax record until you claim it.

You can usually claim back tax from the past four years, but the longer you wait, the more complicated things may become. It’s always a good idea to claim as soon as you can to get your refund faster.

How To Claim Overpaid Tax From HMRC

If you’ve paid more tax than needed, don’t stress, you can get it back! Claiming an overpaid tax refund from HMRC is simpler than it sounds. The quickest way is usually through your Personal Tax Account, and you can claim up to four years back.

Here’s how to get started:

If You Receive a P800 Tax Calculation

HMRC checks at the end of each tax year to see if you’ve paid the right amount of tax. If they spot an overpayment, they’ll send you a P800 tax calculation. Here’s what you need to do:

1. Review the P800:  Take a look at your P800. It will let you know whether you can claim your refund online or if HMRC will be sending you a cheque.
2. Claim Online: If your P800 letter says you can claim online, make sure to go ahead and claim your refund through your Personal Tax Account or the HMRC app.  If you do not claim the online refund, the money will remain on your tax record. HMRC will not automatically send a cheque in most cases.

If You File a Self-Assessment Tax Return

If you’re self-employed or need to file a tax return for other reasons, you don’t need to claim it separately. The process is slightly different. Here’s how it works:

1. Automatic Reconciliation: When you submit your annual Self Assessment return, HMRC will automatically reconcile your tax overpayment.
2. Payment Options: On the tax return, you’ll have the option to choose whether you want the repayment paid into your bank account or used to offset future tax bills.
3. Amending a Previous Return: If you notice an error on a previous return, you can amend it before the deadline. If the deadline has passed, you can request overpayment relief in writing.

For In-Year Claims (If You’ve Stopped Working)

If you stop working during the tax year and don’t expect to work again for at least four weeks, you may be able to claim your refund sooner. Here’s how:

1. What You Need: Make sure you have your P45 from your former employer.
2. Form P50: Complete the P50 form and send it to HMRC. This allows you to claim a tax refund before the year is up.

For Previous Years (If No P800 Was Received)

If you haven’t received a P800 but believe you’ve overpaid tax, you can still make a claim. Here’s what you need to do:

1. Write to HMRC: Write a letter to HMRC and clearly mark it “Repayment Claim.” When you send your letter, be sure to include your National Insurance number, personal details (like your name and address), and any supporting documents such as your P45 or P60.
2. Bank Details: To speed up your refund, add your bank details (account number and sort code) so HMRC can transfer your refund straight to your bank account. It’s much faster than waiting for a cheque!

What You’ll Need Before You Start

Before you contact HMRC, it’s helpful to have these documents and details ready:

• National Insurance number.
• Details of income and pensions for the year in question.
• P60s (End of Year Certificate) and P45s (if you’ve left a job).

How to Get Your Refund Faster

Here’s how to make sure you get your tax refund as quickly as possible:

• Go Online: The fastest way to claim is through your Personal Tax Account or the HMRC app. It’s quicker and more convenient than paper claims.
• Provide Bank Details: Always give HMRC your bank details for a direct payment. This means you won’t have to wait for a cheque.
• Claim Early: The sooner you claim after the tax year ends, the faster the process. Don’t wait for busy periods when things might slow down!

Key Situations Where You Can Claim A Tax Refund

Certain situations make you more likely to be owed a tax refund. Let’s take a look at when you can make a claim.

• Overpaid on Tax Through Wages or Pensions: If you’ve paid more tax through your wages or pension than necessary, you can claim a refund. This is common if your tax code was incorrect or if you’ve worked multiple jobs without proper adjustments.
• Self-Assessment Refund Process: Self-employed individuals who overpaid tax through their self-assessment tax returns can claim refunds. If you’ve overpaid due to estimated payments or other errors, you’ll need to complete a self-assessment correction.
• Overpayment Relief Claim: Overpayment relief is typically used for mistakes made by the taxpayer on a past Self Assessment return when the deadline for amendment has expired.
• Repayment of Income Tax After Leaving a Job: If you’ve paid too much income tax after leaving a job, you can claim a repayment. This often happens when your tax code isn’t updated when you leave employment.
• Tax Refund Through Wages vs. Direct Claim: In some cases, you might receive your tax refund via an adjustment to your tax code, and the refund is paid through your wages. In other situations, you’ll need to apply directly to HMRC for a refund.

HMRC Tax Refund Timelines

 

If you request a cheque, or if you cannot claim online, it may take up to six weeks for the cheque to arrive.

For HMRC tax refunds, the timeline depends on how you filed and the reason for the refund.

Method	Estimated Timeline	Explanation
P800 online claim	5 working days	If you received a P800 tax calculation and are told you can claim online, you will receive the money by bank transfer within 5 working days of making the claim.
Self Assessment Online	1-2 weeks	If you file your Self Assessment tax return online and overpaid, the refund can be processed quickly.
P800 Cheque	Upto 6 weeks	If you request a cheque, or if you cannot claim online, it may take up to six weeks for the cheque to arrive.
Self Assessment Paper	4-6 weeks or more	Processing a paper tax return takes longer than an online submission, and can be subject to further delays during peak periods.
P87 form (other claims)	10-12 weeks or more	Claims made outside of Self Assessment, such as through a P87 form for employment expenses, generally take longer.

Common HMRC Tax Refund Questions

Here are answers to some common questions about tax refunds.

How Do I Get My Tax Back If I Paid Too Much?

If you’ve paid too much tax, there are different ways to get it back depending on how you’re taxed:

• For PAYE workers: Check your Personal Tax Account or use the HMRC app. If you get a P800, follow the instructions to claim the refund.
• For Self-Assessment taxpayers: Your overpayment is settled when you file your tax return.
• For expenses: If you overpaid because of unclaimed work expenses, you’ll need to make a claim through your Personal Tax Account or by post.

How to Find Out If HMRC Owes Me Money?

The best way to check is by:

• Using your Personal Tax Account on the GOV.UK website or the HMRC app to review your tax records.
• Looking for a P800 notice from HMRC, which is sent after the tax year if there’s an under or overpayment.
• Check your payslips and P60 to make sure the right tax code has been applied.

Am I Owed a Tax Rebate or Refund?

• Tax Refund: This is when you’ve paid more tax than required. It usually happens due to errors like a wrong tax code.
• Tax Rebate: A rebate is typically when you claim back tax relief for work-related expenses you haven’t yet claimed.

If you’ve overpaid due to these reasons, you might be eligible for a refund.

What Happens if HMRC Overpaid Tax to Me (Repayment Needed)?

If HMRC has overpaid you,

• They’ll send a letter explaining the overpayment.
• They might adjust your future tax payments by changing your tax code or send a Simple Assessment bill to recover the money.

How to Pay Tax Back if Over-Refunded?

• Wait for a formal request: HMRC will contact you if they’ve overpaid you and request repayment.
• Follow the instructions: You can usually pay online, by bank transfer, or by cheque.
• Contact HMRC if unsure: If you think the overpayment was a mistake, get in touch with HMRC to sort it out.

Forms & Tools For Claiming Tax Refunds In The Uk

Getting a tax refund in the UK is easier than you might think, and the forms or tools you use usually depend on your work situation and why you’re claiming. For most people, the quickest way is through HMRC’s online services, like your Personal Tax Account or the HMRC app. Here’s a simple guide:

For PAYE Employees

1. P800 Tax Calculation
At the end of the tax year, HMRC checks if you’ve overpaid tax. If you have, they send a P800 letter.

     Claim Online: Log in to your Personal Tax Account or HMRC app and request a direct bank transfer for the fastest refund.

2. Form P87 – Job Expenses
If you don’t file a Self Assessment return, you can use a P87 to claim tax relief for job-related expenses under £2,500.

     Online: The fastest way is to submit your claim through GOV.UK.

     By Post: You can download and print the P87 form, fill it in, and send it to HMRC. Don’t forget to include receipts or evidence for                your expenses.

3. Form P50 – Stopping Work Mid-Year
If you stop working during the tax year and don’t plan to start another job or claim taxable benefits for at least four weeks, you can                claim a refund using P50.

      Online or by Post: Complete the form on GOV.UK or print it to send by post. You’ll need your P45 from your previous employer.

4. Form P85 – Leaving the UK
If you’re leaving the UK for good, the P85 helps you claim a refund for the tax year you depart.

     Online or by Post: Submit the form either way and include parts 2 and 3 of your P45.

For Self Assessment Taxpayers

If you file a Self Assessment tax return, HMRC automatically checks for overpaid tax when you submit your return.

• Online: You can choose to have any refund paid directly into your bank account.
• On Account: You can also apply the refund toward your next tax payment if you prefer.

General Tools and Resources

• HMRC App: Claim refunds from a P800 straight to your bank safely and quickly.
• Personal Tax Account: View all your tax records, submit P800 or P87 claims, and manage your refunds online.
• Tax Checker Tool: Use GOV.UK’s online tool to check if you’re due a tax refund.
• Commercial Tax Services: Some companies offer to claim your refund for a fee, but for most people, it’s free and simple to do yourself through HMRC’s official channels.

Final Thoughts On Claiming An HMRC Tax Refund

Claiming an HMRC tax refund is often a straightforward process, but many people miss out because they don’t realise they’ve overpaid. If you think you’re due a refund, it’s worth taking the time to check your tax records and submit a claim.

Remember, whether you’re dealing with a PAYE refund, self-assessment overpayment, or a simple error in your tax code, you’re entitled to get back the money you’ve paid unnecessarily.

Taking action now ensures you won’t miss out on that well-deserved refund!

Disclaimer: This guide is for general information purposes and does not replace professional tax advice. Always consult with a qualified adviser if in doubt.