When back pay arrives
Once a pay award is confirmed, payroll usually pays the new rate first, then the arrears in the same month or the one after.
Estimates only, using national rates. Your payslip and your employer's policies are what count.
Free calculator
NHS back pay calculator
Enter the pay rise and how many months it's backdated to see your arrears.
Back pay before deductions
£360
Roughly £235 after tax, NI and pension
- New annual salary
- £31,049
- Extra per month (gross)
- £89.91
Arrears are taxed in the month they're paid, so a large lump can push that month into a higher rate. It usually balances out by the end of the tax year.