Pro-Rata Salary Calculator
Work out part-time or part-year pay from a full-time salary.
About the Pro-Rata Salary Calculator
Enter the full-time salary, the full-time hours a week, your hours a week and how many months of the year you'll work. The calculator gives your pro-rata salary, your FTE, your monthly pay and the hourly rate.
Pro-rata means “in proportion”. A job advertised at a full-time salary pays your hours divided by the full-time hours, and for a partial year (starting or leaving mid-year) you multiply by the months worked. Your hourly rate stays the same as a full-time colleague's.
The formula
Pro-rata = full-time salary × your hours ÷ full-time hours × months ÷ 12
Worked example
A 50,000 full-time job of 40 hours, worked at 24 hours a week
- 24 ÷ 40 = 0.6 FTE
- Pro-rata salary: 50,000 × 0.6 = 30,000, or 2,500 a month
- Starting in April (9 months): 30,000 × 9 ÷ 12 = 22,500
Things to keep in mind
- Before tax; part-time pay may fall into a lower tax band.
Questions people ask
What's FTE?
Full-time equivalent: 0.6 FTE means 60% of full-time hours.
Is holiday pro-rata too?
Yes, part-time workers get holiday in proportion to the days or hours they work.
Does the hourly rate change?
No: 50,000 ÷ (40 × 52) = 24.04 an hour for both full- and part-time.