What the BR tax code means, when it's right (usually a second job), and when it's quietly overcharging you. A plain-English guide for UK workers in 2026.
If your payslip has the letters BR where you’d expect a number like 1257L, your pay from that job is being taxed at a flat 20 percent from the very first pound, with no tax-free allowance applied at all. Sometimes that is exactly right. Sometimes it is costing you more than two thousand pounds a year.
Here is what the BR tax code means, when it belongs on your payslip, and how to tell the difference between the version that is correct and the version that is quietly overcharging you.
BR stands for Basic Rate. It tells your employer to tax everything you earn from that job at 20 percent, the basic rate of income tax, without giving you any personal allowance against it.
That is the whole point of the code. A normal code like 1257L hands you £12,570 of tax-free pay across the year. BR hands you nothing tax-free. Every pound is taxed at 20 percent from the start.
Most people meet BR on a second job, so let me use a realistic example.
Say your main job is full-time and already uses your entire £12,570 personal allowance. You take a Saturday job, 8 hours a week at £13 an hour. That second job pays £104 a week, around £5,408 a year.
Because your allowance is already spoken for on the main job, HMRC puts the second job on BR. The maths is simple:
No allowance, no NI, just a clean 20 percent off the top. For a basic-rate taxpayer with a second job, that is usually the correct outcome. You already used your allowance where it does the most good, on your main wage.
The BR tax code is doing its job when both of these are true:
In that situation, splitting your tax this way keeps things tidy. Your main job gets the full £12,570 tax-free, and the second job pays a flat 20 percent. Add it all up and you have paid roughly the right amount of tax for the year.
This is the most common honest use of BR, and if it matches your situation you can stop worrying about it.
Now the version that costs you money: BR on your only job.
If BR is sitting on the one and only job you have, you are throwing away your entire personal allowance. Watch what happens to someone earning £20,000 in a single job:
That is £2,514 of tax you should never have paid, and it repeats every year you leave it unfixed. The figure is almost the same for anyone in this position, because it is simply your whole £12,570 allowance taxed at 20 percent.
How does the wrong version happen? Usually a job change with no P45, a first job where the starter checklist was filled in incorrectly, or HMRC holding stale information about how many jobs you have. If you have one job and your code is BR, treat it as a red flag and check it this week.
BR is one of several “no allowance” codes, and they are easy to mix up.
If you are Scottish, the equivalent of BR is SBR, and the rate follows the Scottish basic rate. The principle is identical: a flat rate with no allowance.
The thing to remember is that BR is not automatically bad. On a second job it is usually fine. On 0T you may be overpaying if your total income is modest. The code that is wrong for you depends entirely on how many jobs you have and what they pay.
Three places tell you what HMRC actually thinks, in order of trust:
If the app shows BR on your only job, the fix is usually quick. Tell HMRC that this is your sole employment and ask them to reissue your code with the full allowance. They send your employer an updated code, and any tax you overpaid earlier in the year comes back to you, normally through your next few payslips or as a refund after the tax year ends.
If you would rather call, HMRC’s income tax line is 0300 200 3300. Have your National Insurance number and a recent payslip in front of you.
One thing worth knowing: if your allowance is on the wrong job, sitting on the lower earner while the higher one runs on BR, you can ask HMRC to swap it. Putting the allowance on your highest-paying job almost always leaves you better off across the year.
The mechanics of BR have not changed at all for the 2026/27 tax year. It is still a flat 20 percent with no allowance.
The numbers around it are frozen. The personal allowance stays at £12,570, the basic-rate band still runs up to £50,270, and both are currently held there until April 2028. So the £2,514 you lose by leaving BR on your only job is the same this year as last.
What did shift in April 2026 is how HMRC tells you about code changes. Most P2 coding notices are now digital-first, landing in your online account rather than the post. If your code changed in April and you never saw a letter, that is why. Check the HMRC app rather than waiting for something to arrive.
One 2026 detail to keep in mind for a second job: the National Minimum Wage rose to £12.71 an hour in April, so a few hours a week adds up faster than it used to. The BR tax on it still only bites at 20 percent, but it is worth knowing what you actually keep.
If you want to see exactly what a second job on BR leaves you with after tax and National Insurance, the NetPay app runs the numbers across all your jobs at once, so you can see your real combined take-home in seconds. Free to download.
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NetPay does this maths for every shift, invoice and payslip, automatically.
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BR stands for Basic Rate. It tells your employer to tax everything you earn from that job at 20 percent, with no tax-free personal allowance applied at all. It is most often used on a second job, where your allowance is already used up on your main wage.
Almost certainly, yes. If BR is on your only job you are losing your entire £12,570 personal allowance, which costs about £2,514 a year in extra tax. Check your code in the HMRC app and ask HMRC to reissue it with the full allowance.
Tell HMRC the job is your sole or main employment and ask them to correct your code. They send your employer an updated code, and any tax you overpaid earlier in the year comes back through your next few payslips or as a refund after the tax year ends. You can call HMRC on 0300 200 3300.
Not quite. Emergency tax usually means a temporary W1 or M1 code, or a 0T code, applied when an employer has no details about your earnings. BR is a settled instruction to tax a whole job at 20 percent, which is the normal and correct treatment for most second jobs.
Want to see your actual take-home pay?
NetPay UK works out your real net pay after tax, NI, pension and salary sacrifice, for hourly, shift and variable-income workers. Free to download.
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A note on financial advice: NetPay UK calculates take-home pay based on official HMRC tax rules. This article reflects rules in force at the time of publication (5 June 2026). Tax rules change. For complex situations, consult a qualified UK accountant or visit gov.uk/income-tax.
