How to Claim a Tax Refund from HMRC: A Practical Guide

What Is a Tax Refund and When Might You Be Due One?

A tax refund (also called a tax rebate) is money HMRC returns to you because you paid more tax than you owed. It happens more often than you might think. ^[1] Common reasons include:

• You left a job partway through the tax year and your tax code wasn't updated.
• You worked through an umbrella company that used an incorrect tax code.
• You had emergency tax applied to a new job or pension.
• You overpaid tax on savings interest or dividends.
• You're entitled to claim work-related expenses that reduce your taxable income.
• You made a pension contribution that wasn't reflected in your tax code.
• You stopped working and your tax code stayed the same for the full year.

The key point is that HMRC doesn't always know you've overpaid. In many cases, you need to tell them. ^[1]

How to Check If You're Owed a Tax Refund

HMRC provides an online tool on gov.uk that helps you work out what to do if you've paid too much tax. ^[1] You can use it for overpayments on:

• Pay from a job
• Job expenses (working from home, fuel, work clothing, tools)
• A pension
• A Self Assessment tax return
• A redundancy payment
• UK income if you live abroad
• Interest from savings or payment protection insurance (PPI)
• Income from a life or pension annuity
• Foreign income
• UK income earned before leaving the UK

The tool does not process the refund itself. It tells you what steps to take next. ^[1] If you've already claimed a refund, you can use the same service to check when you can expect a reply. ^[1]

Using Your Personal Tax Account

Most employed people can check their tax position through their Personal Tax Account on gov.uk. You'll need your Government Gateway user ID and password. If you don't have one, you can set it up during the process. Inside your account, you can:

• View your tax code and employment history
• Check estimated earnings and tax paid
• Update your estimated income for the current year
• Claim refunds for overpaid tax

Claiming a Tax Refund Through PAYE

If you're employed and your tax code was wrong, HMRC can usually correct it and issue a refund automatically. But that only happens if they spot the error. If you think you've overpaid, contact HMRC directly or use your Personal Tax Account. For straightforward cases, HMRC will refund the overpayment directly to your bank account. For more complex situations, they may ask you to complete a form or submit a Self Assessment tax return.

What If You've Left a Job?

If you left a job partway through the tax year and didn't start a new one, you may have overpaid tax because your personal allowance was spread across the full year. HMRC should refund this automatically after the tax year ends, but it's worth checking. If you started a new job quickly, your tax code may have been merged incorrectly. Again, check your Personal Tax Account or call HMRC.

Claiming a Tax Refund Through Self Assessment

If you're self employed, a sole trader, or a company director, you'll typically claim a tax refund through your Self Assessment tax return. ^[2] When you submit your SA100 (Self Assessment return), the system calculates your total tax liability. If you've already paid more than that amount through PAYE or payments on account, the difference is shown as a refund on your statement. You can choose to have the refund paid directly into your bank account. HMRC usually processes these within 5 to 10 working days after you file.

Directors and Self Assessment

Company directors often have complex tax affairs. If you're a director and your company pays you a salary through PAYE, but your total income from dividends and other sources is lower than expected, you may have overpaid tax. ^[2] In these cases, filing your Self Assessment return on time is essential. HMRC will calculate the refund based on the figures you provide. If you miss the 31 January deadline, any refund may be delayed while penalties are applied.

Claiming for Work Related Expenses

You can claim tax relief on certain expenses you incur for your job. Common examples include:

• Working from home costs (if you're required to work from home)
• Travel between temporary workplaces
• Professional subscriptions and union fees
• Tools and equipment you need for your job
• Uniforms or protective clothing

If you're employed, you claim these through your tax code. If you're self employed, you claim them as allowable expenses on your Self Assessment return. The deductibility test depends on your employment status. For employees, the expense must be incurred wholly, exclusively, and necessarily in the performance of the duties of the employment (s336 ITEPA 2003). For self-employed people, the test is wholly and exclusively for the purposes of the trade, profession or vocation (s34 ITTOIA 2005) and there is no "necessarily" limb. HMRC is strict on both. A general "working from home" claim for broadband and heating won't succeed unless your contract requires you to work from home.

How Long Does a Tax Refund Take?

For straightforward PAYE refunds, HMRC aims to process them within 5 to 10 working days. For Self Assessment refunds, the same timeline applies after you file your return. If HMRC needs to review your claim, it can take longer. The online tool lets you check the status of an existing claim. ^[1] If you're claiming for multiple years, expect delays. HMRC will check each year separately.

Common Mistakes and Scams to Avoid

Unauthorised Tax Refund Companies

Be very careful about companies that approach you offering to claim a tax refund for a fee. Some are legitimate, but many are not. ^[3] The Financial Conduct Authority (FCA) has warned about firms targeting UK taxpayers with promises of quick refunds. If a firm is not on the FCA's Financial Services Register, you will not have access to the Financial Ombudsman Service or the Financial Services Compensation Scheme (FSCS). ^[3] If you think you've been approached by an unauthorised firm, contact the FCA's Consumer Helpline on 0800 111 6768. ^[3]

Overclaiming Expenses

Some taxpayers inflate their expense claims to generate a larger refund. This is tax fraud (tax evasion), not tax avoidance. ^[4] HMRC can refer serious cases for criminal prosecution, in addition to requiring repayment of the refund plus interest and penalties. The General Dental Council (GDC) has specifically warned dental professionals about tax avoidance schemes that promise inflated refunds. ^[4] The same warning applies across all professions.

Employer Overpayments

If your employer overpaid you and then corrected it through payroll, you may have paid too much tax on the overpaid amount. In that case, you can claim a refund from HMRC. But if the employer later recovers the overpayment from you, you may need to adjust your claim. ^[5] Employers have the right to recover overpayments from wages, but they must notify you first. ^[5] If the amount is large or the overpayment period was long, they should agree a repayment plan. ^[5]

What About Previous Tax Years?

You can claim a tax refund for up to 4 years after the end of the tax year in which the overpayment occurred. For example, for the 2020/21 tax year, you had until 5 April 2025 to claim. After that, the refund is lost. So if you think you may have overpaid in earlier years, act now.

How Holloway Davies Can Help

If your tax affairs are straightforward, you can handle a refund claim yourself through your Personal Tax Account or Self Assessment return. But if you're self employed, a company director, or have multiple income streams, the process gets more complex. We help clients across the UK identify overpayments, submit accurate claims, and deal with HMRC queries. We also help you structure your finances to avoid overpaying in the first place. If you'd like us to review your tax position, get in touch. We work with sole traders, limited companies, and partnerships from our offices in Manchester, Birmingham, and London. For more guidance on your specific situation, explore our full range of services or visit our sole trader and self employment blog for practical tax tips.

Sources

1. gov.uk: Check how to claim a tax refund - GOV.UK
2. New tax return requirements for directors cause uncertainty
3. fca.org.uk: Botleyfx tax refund - FCA
4. gdc-uk.org: Tax avoidance: don't get caught out - General Dental Council
5. acas.org.uk: Handling overpayments - Deductions from pay and wages - Acas