Pro-Rata Salary Calculator
Going part-time? Enter your full-time salary and hours to see your pro-rata take-home pay and the real cost of reduced hours.
Pro-rata net salary
£20,800/yr
£
£10k£300k
445
2045
Your pro-rata net salary
£20,800/yr
60% of full-time (3.0 days/week)
Pro-rata gross
£24,000/yr
Pro-rata net
£20,800/yr
Full-time vs part-time comparison
| Full-time | Part-time | Difference | |
|---|---|---|---|
| Gross salary | £40,000 | £24,000 | -£16,000 |
| Income tax | £5,486 | £2,286 | -£3,200 |
| National Insurance | £2,194 | £914 | -£1,280 |
| Net salary | £32,320 | £20,800 | -£11,520 |
The real cost of going part-time
Gross salary reduction£16,000/yrActual net loss£11,520/yrTax savings£4,480/yrYou keep28% of the reduction
You give up £16,000 gross but only lose £11,520 net — because you pay less tax.
Hourly rates
Gross hourly£20.51/hrNet hourly£17.78/hrFTE net hourly£16.57/hr
Your net hourly rate is higher part-time — you pay less tax per hour worked.
| Period | Gross | Net |
|---|---|---|
| Hourly | £20.51 | £17.78 |
| Daily | £92.31 | £56.99 |
| Weekly | £462 | £400 |
| Monthly | £2,000 | £1,733 |
| Annual | £24,000 | £20,800 |
Income tax
£2,286
National Insurance
£914
Effective rate
13.33%