Understanding your tax code is crucial to ensuring that you pay the right amount of tax in the UK. One of the most common tax codes that causes confusion is the BR tax code (also known as tax code BR). If this code is applied incorrectly, it can lead to overpayment of tax. Below, we explain what it means, why it may be applied, and the practical steps you can take to avoid paying too much.

What Does the BR Tax Code Mean?

The BR tax code stands for "Basic Rate." It instructs HMRC (HM Revenue & Customs) to tax all of your income at the basic rate of 20% without applying any personal allowance. This means:

You will not benefit from the tax-free personal allowance (£12,570 in 2025/26).
Every pound of your income under this code is taxed at 20%.

The BR tax code is usually applied when:

You have more than one job or pension.
HMRC does not have the full details of your income.
You have started a new job and your employer has not received your P45 or tax information.

Why You Might Be Given the BR Tax Code

There are several reasons HMRC may assign the tax code BR:

Second Job or Pension – If you have multiple sources of income, the personal allowance is usually applied to your main job. Additional jobs or pensions are taxed under the BR code.
Missing Paperwork – If you start a new role without providing your P45 or completing a starter checklist, your employer may place you on BR as a temporary measure.
Emergency Code Adjustments – Sometimes, HMRC uses the BR tax code as a holding code until they receive updated information about your income.

Impact of BR Tax Code on Your Pay

Being placed on a BR tax code can result in higher tax deductions than necessary, particularly if your second income is below the personal allowance threshold. For example:

Scenario 1: You earn £8,000 a year from a second job. Under normal circumstances, this should be covered by your unused personal allowance. But if BR is applied, you will pay 20% tax unnecessarily.
Scenario 2: You earn £25,000 from your main job and £10,000 from a second job. If BR applies to the second job, you will be taxed 20% on the full £10,000. This is correct in this case, as your personal allowance is already used up by your main income.

In short, the impact depends on your total income and how your allowance is distributed.

How to Check if BR Tax Code is Correct

You should always review your payslip and ensure that the tax code assigned matches your circumstances. To check:

Look at your payslip – the tax code will be displayed clearly.
Compare your code with your income sources.
Log into your HMRC Personal Tax Account to see your tax code and details of how it is allocated.

How to Avoid Overpaying Tax Under BR

If you believe you are on the tax code BR incorrectly, here’s what you should do:

Contact HMRC – Call HMRC or update your details online to provide full information about your income.
Submit a Starter Checklist or P45 – If you are starting a new job, ensure your employer has accurate information.
Claim a Refund – If you have overpaid tax because of BR, you can request a tax refund from HMRC. This can be done online or by contacting them directly.
Reallocate Your Personal Allowance – You may be able to ask HMRC to split your personal allowance across multiple jobs or pensions.

Common Misconceptions About BR Tax Code

My employer decides my tax code – False. HMRC determines the tax code and informs employers.
I will lose money permanently if placed on BR – False. Any overpaid tax can usually be refunded once HMRC updates your records.
BR only applies to second jobs – Not always. It can also be applied temporarily if HMRC lacks information about your main job.

Key Takeaways

The BR tax code means all your income is taxed at 20% without a personal allowance.
It commonly applies to second jobs, pensions, or situations where HMRC lacks details.
Being placed on tax code BR can result in overpaying tax if your personal allowance is not used correctly.
Always check your tax code, update your details with HMRC, and reclaim overpaid tax where applicable.

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