Tax year 2026/27
Pro-rata salary calculator
Moving to part-time hours, or comparing a part-time offer? See the pro-rata salary and what it means for your monthly take-home.
Your pro-rata salary
£21,000
60% of the full-time equivalent
Monthly gross£1,750.00
Estimated monthly take-home£1,553
Take-home assumes England/Wales/NI rates, no pension or student loan. Use the full calculator for your exact situation.
Common questions
How is a pro-rata salary calculated?
Divide your weekly hours by the full-time weekly hours, then multiply by the full-time salary. For example, 22.5 hours against a 37.5-hour week is 60%, so a £35,000 full-time salary becomes £21,000 pro rata.
Is holiday entitlement also pro rata?
Yes. Statutory holiday of 5.6 weeks applies to part-time workers in proportion to the days or hours they work, and bank holidays are commonly included in the calculation.
Does part-time work change my tax rate?
No - the same 2026/27 tax bands and £12,570 personal allowance apply regardless of hours. A lower pro-rata salary simply uses less of each band, and below £12,570 you pay no income tax at all.