Pro Rata Salary & FTE Calculator
Calculate your prorated part-time salary, reverse engineer the FTE you need to apply for, and work out your precise statutory annual leave entitlement.
Pro Rata Details
Calculate your precise prorated pay and exact statutory holiday limits.
Your Pro Rata Package
Your adjusted salary and prorated legal entitlements.
Annual Gross Salary
£18,000
Monthly Salary
£1,500
Weekly Salary
£345
Pro Rata Holiday Entitlement
16.8 days / year
Check exact tax and National Insurance deductions below.
Calculate Take-Home PayUnderstanding FTE & Shift Fractions
A large number of public sector (NHS, Teaching) and private jobs quote their hours in standard "FTE Fractions" rather than days. Here is exactly what those fractions mean for a standard 5-day week:
| FTE Fraction | Days Per Week | Proportion calculation |
|---|---|---|
| 0.8 FTE | 4 Days | 80% of Full Time Pay |
| 0.6 FTE | 3 Days | 60% of Full Time Pay |
| 0.5 FTE | 2.5 Days | 50% of Full Time Pay |
| 0.4 FTE | 2 Days | 40% of Full Time Pay |
| 0.2 FTE | 1 Day | 20% of Full Time Pay |
Special Calculations
Nuances in the UK HR rulebook.
Bank Holidays for Part-Time Staff
UK bank holidays must be pro-rated to prevent discrimination against part-time staff who don't work Mondays. Most employers give you a total pro-rated holiday allowance (e.g., 16.8 days) and deduct a day from that allowance if an office-closing bank holiday occurs on a day you naturally work.
Term-Time Only (TTO) Pro Rata
If you work Term-Time Only (typically 38 or 39 weeks a year rather than 52), your salary is subjected to a "double pro rata". Your pay is calculated based on hours worked vs standard, AND weeks worked vs exactly 52.14 weeks. You are then proportionally awarded holiday pay spread evenly across your 12 monthly payslips.
Using the Tools
Making empowered career transitions.
Reverse Pro Rata Tool
Use the "Reverse Calculator" tab at the top of the tool if you are establishing career boundaries. E.g., "I must earn at least £22,000 part-time working 3 days a week. What roles should I look for?" It precisely models what full-time offer equates to your needs.
Finding Your Take-Home
Pro rata only establishes your gross taxable income. Take your computed annual gross over to our main income tax calculator to finalize your take home calculation.
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Minimum Wage Legal Check
Make sure your part-time or term-time wages are legally sound.
NHS Salary Calculator
Check exact 2026/27 Agenda for Change brackets.