Pay rise calculator UK

It depends on which tax band the raise falls into. In England, Wales or Northern Ireland, the part of a raise taxed at the basic rate loses 20% income tax and 8% National Insurance, so you keep 72%. The part taxed at the higher rate loses 40% income tax and 2% National Insurance, so you keep 58%. Scotland has its own bands, and a student loan takes a further share once you are over its threshold.

Between £100,000 and £125,140, your personal allowance goes down by £1 for every £2 you earn. Each extra £1 you earn there also makes 50p more of your income taxable, so in England, Wales or Northern Ireland the 40% higher rate works like a rate of 60%. With 2% National Insurance, you keep 38p of each extra £1 in this range.

Yes, once your salary is above your plan's threshold. You repay 9% of income above £26,900 for Plan 1, £29,385 for Plan 2, £33,795 for Plan 4 and £25,000 for Plan 5, and a postgraduate loan adds 6% above £21,000. So above the threshold, 9p of every extra £1 goes to your loan, or 15p if you also have a postgraduate loan.

This calculator works out a whole year and then divides it by 12 or 52. Payroll works out tax, National Insurance and student loans each pay period and rounds them, so payslips can differ by a few pence. Pensions, bonuses, benefits in kind and other tax codes also change your pay.