BR stands for Basic Rate and means all your income from this source is taxed at 20%. The code is normally used temporarily until your employer has all of the necessary details to give you a correct tax code and apply the correct income tax deductions.
Why would I be on a BR tax code?
What does a BR tax code mean? If you've got the letters “BR” in your tax code, you're being taxed at the basic rate from the first penny you earn in this job. This might be because your employer doesn't have the information needed to set your code properly, but it's not necessarily wrong.
How do I fix my BR tax code?
If you believe your tax code is wrong you should contact HMRC who will issue your employer with a revised tax code as required. This can be done by phone – 0300 200 3300 – or on-line .