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Career & HR · Pro-Rata Salary Calculator

Pro Rata Salary for 4 Days a Week

Find out what a full-time salary converts to when you work 4 days a week. Working 4 days out of a standard 5-day week means you are 80% FTE. For a £35,000 full-time salary, the pro-rata pay is £28,000 per year — equivalent to £2,333 per month (gross, before tax and National Insurance). You also receive a pro-rata share of statutory holiday: 22.4 days out of the full-time 28-day entitlement, as set out by GOV.UK and guaranteed under the Part-time Workers Regulations 2000. Enter your own FTE salary to get your personal figures.

Quick answer

4 days/week = 80% FTE

  • Pro-rata salary on £35,000 FTE: £28,000/year
  • Monthly gross: £2,333/month
  • Equivalent hourly rate: £18/hour (same as full-time, by law)
  • Pro-rata statutory holiday: 22.4 days (from 28-day full-time entitlement)
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Frequently asked questions

What is the pro-rata salary for 4 days a week?

Working 4 days out of 5 gives a proportion of 80%. On a £35,000 FTE salary the pro-rata annual pay is £28,000, or £2,333 per month (gross).

How many days' holiday does a 4 days-a-week worker get?

The UK statutory entitlement for a 4 days-a-week worker is 22.4 days per year — calculated as 28 days × 80% (4 ÷ 5). This right is guaranteed under GOV.UK holiday guidance and the Part-time Workers Regulations 2000.

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