Pro-Rata Salary Calculator 2026/27
What is 0.8 of a full-time salary — or a term-time-only contract — actually worth? Enter the full-time salary and your fraction to see your real pay and take-home. Your pay never leaves your browser.
- Rates: GOV.UK — checked 5 Nov 2026
- Tested against HMRC worked examples
- Your salary never leaves your browser
Pension is worked out on your actual pro-rata pay, the same way as the main calculator: auto-enrolment is a % of qualifying earnings (£6,240–£50,270), and pension comes off before income tax but not before National Insurance. Choose "No pension" if you are not in a scheme.
School staff: term-time only is usually 39 weeks of 52 — 0.75 FTE. Some contracts add holiday weeks; use the custom fraction if yours is different.
Your pro-rata salary
— / year
- Take-home / year
- —
- Take-home / month
- —
- Full-time take-home
- —
| Gross pay | — |
|---|---|
| Pension | — |
| Income tax | — |
| National Insurance | — |
| Student loan | — |
| Take-home pay | — |
Monthly payslip — April to March
| Month | Gross | Tax | NI | Net | Pension | Student loan |
|---|
We could not load the 2026/27 rates. Please check your connection and refresh the page.
Rates checked 5 November 2026.
Every figure checked against HMRC's own examples.
Your salary never leaves your browser.
Rates re-checked by hand after every Budget.
Rates: GOV.UK — last checked 5 November 2026 See the official rates
Actual salary to full-time equivalent
Know your pro-rata pay but not the full-time figure? Enter your actual salary and fraction.
—
How this is calculated
Actual salary = full-time salary × contracted fraction. Term-time only is weeks worked ÷ 52 (39 ÷ 52 = 0.75). Tax, National Insurance, pension and student loan are then worked out on the actual salary by the same engine as the take-home pay calculator. Pension defaults to auto-enrolment (5% of qualifying earnings); change it in the pension box — including switching it off — and the take-home updates. Because the £12,570 personal allowance is fixed, a pro-rata salary usually keeps a bigger share of its pay than the full-time figure. Rates on the 2026/27 rates page.
Examples — pro-rata at common fractions
| Pattern | Actual salary | Take-home / year | Take-home / month |
|---|---|---|---|
| 0.8 FTE on £30,000 | £24,000.00 | £20,089.20 | £1,674.10 |
| Term-time only (39 of 52 weeks) on £30,000 | £22,500.00 | £19,069.20 | £1,589.10 |
| 0.6 FTE on £40,000 | £24,000.00 | £20,089.20 | £1,674.10 |
Auto-enrolment pension at 5% of qualifying earnings, no student loan.
Questions
What does pro-rata mean for salary?
Pro-rata means "in proportion". If a job pays £30,000 full-time and you work 0.8 of full-time (four days a week), your pro-rata salary is £24,000 — 80% of £30,000. Your take-home pay is then worked out on the £24,000, not on the full-time figure.
How do I work out a term-time only salary?
Multiply the full-time salary by the weeks you work divided by 52. A £30,000 job worked 39 weeks a year (term-time only) is £22,500. Take-home on £22,500 is £19,069.20 a year (£1,589.10 a month) with the usual auto-enrolment pension.
What is the difference between pro-rata and part-time?
They are the same maths with different framing. Part-time is usually talked about in hours or days per week; pro-rata is talked about as a fraction of full-time (0.8 FTE) or as term-time weeks. This page works in fractions; the part-time salary calculator works in hours.
How do I work out the full-time salary from a pro-rata one?
Divide the actual salary by the fraction. A £22,500 salary at 0.75 FTE is a £30,000 full-time equivalent. Use the "actual to full-time" box above.
Is my pay sent anywhere?
No. The calculator runs entirely in your browser. No figure you enter is sent to a server, stored, or shared.
Related calculators
Take-home pay calculator · Part-time salary calculator · Hourly rate calculator · Part-time vs full-time: the pro-rata maths · 2026/27 rates