Pro rata by salary · 2026
£31,000 pro rata: what you earn part time
£31,000 full time (37.5 hours) is £15.90 an hour. On 25 hours a week that is £20,667 a year, £1,722 a month, £397 a week.
All figures are gross pay, before Income Tax and National Insurance. Different hours or days? Use the tables below, or put your own numbers into the pro rata pay calculator.
£31,000 pro rata by hours per week
Full-time week of 37.5 hours. Each row is £31,000 × your hours ÷ 37.5, rounded to the nearest pound.
| Your hours | Per year | Per month | Per week |
|---|---|---|---|
| 8 hours | £6,613 | £551 | £127 |
| 10 hours | £8,267 | £689 | £159 |
| 12 hours | £9,920 | £827 | £191 |
| 15 hours | £12,400 | £1,033 | £238 |
| 16 hours | £13,227 | £1,102 | £254 |
| 20 hours | £16,533 | £1,378 | £318 |
| 22.5 hours | £18,600 | £1,550 | £358 |
| 24 hours | £19,840 | £1,653 | £382 |
| 25 hours | £20,667 | £1,722 | £397 |
| 28 hours | £23,147 | £1,929 | £445 |
| 30 hours | £24,800 | £2,067 | £477 |
| 32 hours | £26,453 | £2,204 | £509 |
| 35 hours | £28,933 | £2,411 | £556 |
£31,000 pro rata by days per week
Full-time week of 5 days. Each row is £31,000 × your days ÷ 5.
| Your days | Per year | Per month | Per week |
|---|---|---|---|
| 1 day | £6,200 | £517 | £119 |
| 2 days | £12,400 | £1,033 | £238 |
| 3 days | £18,600 | £1,550 | £358 |
| 4 days | £24,800 | £2,067 | £477 |
If full time is 40 or 35 hours
The full-time week changes the hourly rate and every pro rata figure. Check the job advert or contract. The same £31,000 at three common full-time weeks:
How this is worked out
pro rata salary = £31,000 × your hours ÷ full-time hours
Example: £31,000 × 25 ÷ 37.5 = £20,666.67 a year. Monthly is that ÷ 12, weekly is ÷ 52. The hourly rate is £31,000 ÷ 52 ÷ 37.5 = £15.90.
Holiday follows the same fraction. Part-time staff get the same 5.6 weeks of statutory leave, measured in their own working days: 3 days a week gives 5.6 × 3 = 16.799999999999997 days. The holiday entitlement calculator gives your exact figure.
Whatever the sum says, the hourly rate must not fall below the National Minimum Wage for your age (£12.71 for 21 and over from 1 April 2026). Current rates are on gov.uk.
£31,000 pro rata: common questions
Is £31,000 pro rata the same as £31,000 a year?
No. "£31,000 pro rata" means £31,000 is the full-time salary and you get the share that matches your hours. On 25 hours against a 37.5-hour week you would earn £20,667 a year, not £31,000. You only get the full £31,000 if you work the full-time hours.
How much is £31,000 pro rata for 3 days a week?
£31,000 × 3 ÷ 5 = £18,600 a year. That is £1,550 a month or £358 a week before tax, assuming full time is 5 days.
Does pro rata pay change my hourly rate?
No. The hourly rate stays the same and only the number of paid hours changes. £31,000 for a 37.5-hour week is £15.90 an hour whether you work 37.5 hours or 20. Paying part-time staff a lower hourly rate for the same job may be unlawful less favourable treatment.
You might also need
Pro rata pay calculator
Any salary, any hours or days per week: annual, monthly, weekly and hourly figures.
Pro rata by salary
Ready-made part-time pay tables for every full-time salary from £15,000 to £80,000.
Holiday entitlement calculator
Statutory leave for part-time, irregular hours and mid-year starters.
Holiday entitlement when leaving a job
Untaken leave you must be paid for in your final pay.
What does pro rata mean?
Job adverts, worked examples and where the in-proportion rule applies.
Zero-hours contract holiday
The 12.07% accrual method, rolled-up holiday pay and the 52-week average.
Sources
- gov.uk: National Minimum Wage and National Living Wage rates
- gov.uk: Holiday entitlement (5.6 weeks, 28 day cap)
Figures checked on 3 September 2026. Statutory minimums only: your contract can give more, never less.