Pro Rata Salary Calculator
What a full-time salary pays for part-time hours or part of a year.
Good to know. A job advertised at 40,000 “pro rata” for three days a week pays 24,000. The ad just starts with the bigger number.
How it works
In plain words
Divide your hours by the full-time hours for your share of a full-time job (the FTE). Multiply the full-time salary by it. For part of a year, multiply by the months worked and divide by 12.
The formula
FTE = your hours ÷ full-time hours pro-rata salary = full-time salary × FTE × months ÷ 12 hourly rate = full-time salary ÷ (full-time hours × 52)
Worked example
22.5 of 37.5 hours is 0.6 of a full-time job, so 40,000 × 0.6 = 24,000.00 a year, or 2,000 a month.
Sources
No outside data or rates: this is plain arithmetic.
2 automated tests check its answers on every change.
About the pro rata salary calculator
“Pro rata” means in proportion. A job advertised at 40,000 pro rata pays 40,000 for full-time hours and a proportional share for fewer: three days a week is 60% of five, so 24,000. The same applies to someone who works only part of a year.
Enter the full-time salary, the full-time hours for the job, and your hours. The calculator works out your share of a full-time job, also called the full-time equivalent or FTE, and your salary, monthly pay and hourly rate. The hourly rate is the same as a full-time colleague’s, which is how it should be: in the UK and EU, part-time workers have the right to the same hourly pay and conditions, pro rata.
For part of a year, enter the months worked. Someone starting a 40,000 job with three months of the year left earns 10,000 in that year. Holiday entitlement is pro-rated in the same way; the UK holiday entitlement calculator works it out.
Remember that tax isn’t pro-rata. In the UK and many countries, a lower salary uses more of the tax-free allowance, so take-home pay falls by less than the salary does. The take-home pay calculators show the effect.
Questions people ask
What does pro rata mean in a job advert?
The salary shown is for full-time hours. Part-time hours are paid the same share of it: 3 days of 5 is 60%.
How do I work out a pro-rata salary?
Multiply the full-time salary by your hours and divide by the full-time hours. 40,000 × 22.5 ÷ 37.5 = 24,000.
What is FTE?
Full-time equivalent: your hours as a share of full-time. 0.6 FTE is 60% of a full-time job, about three days a week.