Simple Salary / Two jobs tax calculator
Two jobs tax calculator
What you take home from two jobs, how your tax-free allowance is split, and whether the usual BR tax code on the second job leaves you paying too much or too little.
How is tax worked out with two jobs?
Your Personal Allowance of £12,570 is normally given to your main job (code 1257L). The second job gets a BR code, which taxes all of it at 20%. If your main job pays less than the allowance, you can ask HMRC to split the allowance so you do not overpay.
Do I pay more tax with a second job?
Not in total, if the codes are right: you pay the same tax as one job paying the combined amount. But the second job's payslip will show 20% tax from the first pound, which looks worse than it is. National Insurance is actually lower with two jobs, because each employment has its own threshold.
What if my two jobs together take me over £50,270?
Part of your income should be taxed at 40%, but a BR code only takes 20%. HMRC will normally correct this by giving the second job a D0 code, or by adjusting your main job's code. Otherwise you will get a bill after the tax year.
Do I need to tell HMRC about a second job?
Your new employer tells HMRC when you start, and HMRC issues the codes. You only need to contact them if the codes look wrong, for example if your main job is part time and does not use the full allowance.
Rates last checked against gov.uk on 11 October 2026.
Sources
Please note
Estimates only. If either job is a pension rather than employment, or you have other income, the position is different.