2026/27 pay calculator
Part-time and pro-rata pay calculator
Compare full-time and part-time take-home pay using your contracted hours, pension and student loans.
Your details
Tax, pension & student loansStandard Income Tax · No pension · No student loan
Input guidance
- Annual gross salary (£)
- Before Income Tax, NI and employee pension deductions.
- Employee pension (% of all salary)
- Applied to the full salary entered, not qualifying earnings.
Your estimate
Change in average monthly take-home
-£540.00
2026/27 estimate. Actual payslips can differ.
Pay breakdown
| Monthly average | Before | After |
|---|---|---|
| Gross pay | £3,750.00 | £3,000.00 |
| Income Tax | £540.50 | £390.50 |
| National Insurance | £216.20 | £156.20 |
| Employee pension | £0.00 | £0.00 |
| Student loans | £0.00 | £0.00 |
| Take-home pay | £2,993.30 | £2,453.30 |
How this estimate works
Compares your full-time salary with the chosen hours, assuming the same hourly rate and a full year in each arrangement.
- Actual annual gross pay
- £36,000.00
- Actual monthly gross pay
- £3,000.00
Includes your figures. Share only with people you choose.
More about this calculation
Your gross pay changes in proportion to hours
We multiply your full-time salary by your contracted hours divided by full-time hours. The deduction calculation then runs again on that lower salary. Your take-home reduction can be smaller than the reduction in gross pay.
Check the salary on the job advert
Some adverts already show the actual part-time salary. Enter the full-time equivalent here so hours are not deducted twice. This tool assumes the same hourly pay and a full year in each arrangement.
Working fewer weeks as well as fewer hours
If your contract is term-time only, hours are only part of the calculation. Use the term-time tool with the paid-weeks figure supplied by your employer.
Worked example
With these settings, change in average monthly take-home is -£540.00. This example stays fixed when you change the calculator.
- Annual gross salary (£)
- £45,000
- Full-time hours each week
- 37.5
- Contracted hours each week
- 30
- Income Tax region
- England, Wales or Northern Ireland
- Employee pension (% of all salary)
- 0%
- Pension method
- Net pay: before Income Tax
- Undergraduate student loan
- None
- Postgraduate loan
- No
Annual gross pay of £36,000.00 minus Income Tax of £4,686.00, NI of £1,874.40, employee pension of £0.00 and student loans of £0.00 leaves £29,439.60 for the year.
Sources & assumptions
Checked 25 October 2026
Salary estimates assume a standard Personal Allowance, employee NI category A and even monthly pay. Individual tax codes, benefits and payroll adjustments can change your payslip.
Read the calculation assumptionsHow the salary calculation works