A BR tax code means every pound of income from that job or pension is taxed at the basic rate of 20%, with no Personal Allowance applied to it. The zero you often see next to it on a payslip confirms the same thing from the payroll side: your tax-free amount for that income source is nil. That is normal when you have another job or pension already using your allowance. It is expensive if this is your only income.
What BR Means on Your Payslip
Under Pay As You Earn, your employer or pension provider uses a tax code to decide how much income tax to deduct before paying you. The letters BR stand for basic rate, and HMRC assigns the code when all income from a particular source should be taxed at 20% with no tax-free portion deducted first.1GOV.UK. What Your Tax Code Means
Most tax codes contain a number showing your tax-free income for the year. A code of 1257L, for instance, means you get £12,570 tax-free from that employer. HMRC works this out by starting with your Personal Allowance, subtracting any adjustments, and dropping the last digit.1GOV.UK. What Your Tax Code Means A BR code has no number because no tax-free amount applies. The zero in the tax-free pay column on your payslip is the payroll system saying the same thing: none of your earnings here are being treated as tax-free.
The standard Personal Allowance is £12,570 for the 2025/26 and 2026/27 tax years, frozen at that level until April 2031.2GOV.UK. Income Tax Rates and Personal Allowances3GOV.UK. Income Tax: Maintaining the Personal Allowance and the Basic Rate Limit HMRC assumes that full allowance is being used somewhere else, so BR taxes the first pound from this source at 20% and every pound after it.
One thing BR is not: an emergency or temporary code. Codes like W1, M1, and X calculate tax on a non-cumulative basis while HMRC catches up with your details.1GOV.UK. What Your Tax Code Means BR is a deliberate designation and stays in place until your circumstances change or you ask HMRC to correct it.
Why HMRC Put You on BR
The most common reason is having more than one job or pension. HMRC allocates your full Personal Allowance to one employer and applies BR to the other, so you don’t accidentally claim the tax-free threshold twice and end up with a bill at the year-end.
Drawing a private pension while still working produces the same outcome. Your salary usually absorbs the whole Personal Allowance, so the pension provider deducts 20% from every payment. The same logic covers any mix of employment and pension income where one source already accounts for the tax-free amount.
Starting a new job without giving your employer a P45 from the previous one is another trigger. Without that record of earlier earnings and tax paid, the payroll department can’t apply the right code. If you complete a starter checklist and tick Statement C (which indicates you have another job or pension), the employer is instructed to use BR.4GOV.UK. HMRC Starter Checklist HMRC will update the code once they have the full picture, but that can take weeks.
When BR Costs You Money
If BR is your only tax code across all your income, you’re almost certainly overpaying. Every pound is taxed at 20% with no Personal Allowance applied anywhere, so £12,570 of tax-free income goes completely unused. Over a full tax year that comes to roughly £2,514 in unnecessary tax (20% of £12,570). This is the situation where sorting the code quickly matters most.
The opposite risk is quieter but real. If your total income across all jobs and pensions goes above £50,270, part of what you earn should be taxed at 40%, not 20%. A BR code only deducts 20%, so the shortfall builds up over the year. HMRC catches it later through a P800 tax calculation after the tax year ends, and the bill either has to be paid directly or is collected by reducing your Personal Allowance in a future year, which lowers your regular take-home pay for months.
Related Codes You Might See Instead
If your combined income pushes you into the higher rate band, HMRC may assign D0 rather than BR. D0 works the same way but applies the 40% higher rate to all income from that source.1GOV.UK. What Your Tax Code Means
Scottish taxpayers see SBR rather than BR. The Scottish basic rate is also 20%, but it applies to a narrower income band (£15,398 to £27,491 for 2025/26) because Scotland sets its own rates and thresholds.1GOV.UK. What Your Tax Code Means5mygov.scot. Scottish Income Tax Welsh taxpayers pay the same basic rate as the rest of the UK, so a BR code works identically in Wales.6GOV.UK. Income Tax in Wales
How to Check and Change Your Tax Code
The fastest route is the Check Your Income Tax service on GOV.UK, where you can see your current code for each employer, update your income estimate, and report changes in employment.7GOV.UK. Check Your Income Tax for the Current Year The same information sits in your Personal Tax Account and the HMRC app.8GOV.UK. Personal Tax Account: Sign In or Set Up You’ll need your Government Gateway login, your National Insurance number, and a sensible estimate of your total income across all sources for the year.9GOV.UK. Your National Insurance Number
If you’d rather speak to someone, the income tax helpline on 0300 200 3300 can review your situation and update your record over the phone. Either way, once HMRC agrees the code needs changing, they send a P6 notification to your employer or pension provider with the revised instructions.10GOV.UK. Understanding Your Employees Tax Codes Payroll usually applies the new code within one or two pay periods.
Splitting Your Personal Allowance Between Two Jobs
Rather than leaving a second job on BR all year, you can ask HMRC to split your Personal Allowance between employers. That spreads the tax-free amount across both income sources so you pay closer to the right tax in real time instead of overpaying on one job and waiting for it back.11GOV.UK. How Tax Works if You Have More Than One Job If your income from either job is irregular, a split allowance can leave you slightly over or under during the year, but HMRC reconciles the difference afterward.
Claiming Back Tax You’ve Overpaid
If you’ve been on BR when you shouldn’t have been, you’re likely owed money. For the current tax year, updating the code should prompt your employer to adjust future payslips, effectively refunding the overpayment through larger net pay for the rest of the year.
For previous years, HMRC normally sends a P800 tax calculation letter between June and November after the tax year ends. If the letter says you’re due a refund, you can claim it online through the link in the letter or through your Personal Tax Account. Online claims arrive within five working days as a bank transfer. If HMRC sends a cheque instead, expect it within 14 days of the letter’s date.12GOV.UK. If Your Tax Calculation Letter (P800) Says You’re Due a Refund
You have four years from the end of the tax year to claim back overpaid income tax.13GOV.UK. SACM12155 – Overpayment Relief: Time Limits for Making a Claim For the 2021/22 tax year, that deadline is 5 April 2026, so if you were on BR incorrectly back then, act soon. Once the four-year window closes, HMRC won’t process the claim. If you haven’t had a P800 by December but believe you’ve overpaid, contact HMRC or check your Personal Tax Account rather than waiting for one to arrive.