Pro Rata Salary Calculator UK 2026/27
Turn a full-time salary into your part-time pro rata pay, hourly rate and take-home pay after tax and National Insurance for 2026/27.
- Per month (gross)
- £0
- Hourly rate
- £0
- Income tax
- £0
- National Insurance
- £0
- Take-home a year
- £0
- Take-home a month
- £0
How we worked this out
- Ratio = your hours divided by full-time hours.
- Pro rata salary = full-time salary × that ratio. Hourly rate assumes 52 paid weeks.
- Take-home is worked out on the pro rata salary with the same income tax and NI rules as the take-home pay calculator.
Rates for 2026/27, last checked 29 October 2026.
How the calculation works
The pro rata maths is one ratio: your hours divided by full-time hours. That ratio is applied to the full-time salary. Take-home pay is then worked out on the pro rata salary using the 2026/27 income tax bands and 8% employee National Insurance, exactly as on the take-home pay calculator.
Things this calculator does not include
- Pension contributions, student loans and tax codes other than 1257L.
- Term-time-only contracts, where pay is also pro rata to weeks worked.
- Overtime and bonuses.
Read the GOV.UK part-time workers guidance for your rights.
Frequently asked questions
How do I work out a pro rata salary?
Divide your hours by the full-time hours and multiply by the full-time salary. 22.5 hours of a 37.5-hour, £32,000 job is 60%, so £19,200 a year.
How do I work out my hourly rate from a salary?
Divide the yearly salary by your weekly hours, then by 52. £19,200 for 22.5 hours a week is about £16.41 an hour.
Is part-time holiday pro rata too?
Yes. Full-time workers get at least 5.6 weeks of paid leave, and part-time workers get the same number of weeks, pro rata to the days they work.
Do part-time workers pay less tax?
The same rates apply, but the £12,570 personal allowance is not pro rata, so a larger share of a part-time salary is tax-free.