About the Pro Rata Salary Calculator
Job adverts usually quote a full-time equivalent (FTE) salary. This pro rata salary calculator shows what you will actually be paid if you work fewer hours than a full-time week, join or leave partway through the year, or both. It also returns your monthly pay, the hourly rate behind the salary, your FTE fraction and a pro-rated holiday entitlement.
It is useful for part-time and job-share roles, term-time contracts, fixed-term cover, new starters paid for a part year, and employers preparing an offer letter. Enter the full-time salary and hours from the advert, your contracted hours, and how many months of the year you will be employed.
The calculation assumes you are paid the same hourly rate as a full-time colleague, which is how pro rata pay normally works and, in many countries, what equal-treatment rules for part-time workers require. It does not include tax — run the result through a take-home pay calculator for net figures.
With the default inputs, the pro rata pay for the period is $36,000.00. Change any value above to recalculate instantly.
How to use the pro rata salary calculator
- 1Enter the full-time salary quoted in the job advert.
- 2Enter the full-time weekly hours and your own contracted hours.
- 3Set the number of months you will work this year (12 for a full year).
- 4Add full-time holiday days to see your pro-rated leave.
- 5Read your pro rata pay, monthly pay and hourly rate.
Formula and method
The full-time equivalent (FTE) is your contracted weekly hours divided by the employer’s full-time weekly hours. Multiplying the full-time salary by the FTE gives your pro rata annual salary, and multiplying again by the share of the year you are employed gives what you will actually be paid for that period.
The hourly rate is the full-time salary divided by full-time hours × 52 weeks, and it is the same for full- and part-time staff. Holiday entitlement is pro-rated the same way: full-time leave × FTE × months ÷ 12. Employers sometimes pro-rate by working days instead of months; results are very close for whole months.
- FTE
- Your hours ÷ full-time hours
- Months
- Months of the year you are employed (0–12)
Worked examples
3 days a week on a $60,000 salary
Working 24 of 40 hours is 0.6 FTE, so the $60,000 role pays $36,000 a year, or $3,000 a month. The hourly rate is $60,000 ÷ 2,080 hours = $28.85, and 25 days of leave becomes 15 days.
Full-time starter joining with 7.5 months left
A full-time employee paid $45,000 who starts with 7.5 months of the year remaining earns $45,000 × 7.5 ÷ 12 = $28,125 in that first year, and accrues 25 × 7.5 ÷ 12 ≈ 15.6 days of leave.
22.5 hours on a 37.5-hour contract for 6 months
22.5 ÷ 37.5 = 0.6 FTE, giving a pro rata salary of $31,200. Over a 6-month fixed-term contract that is $15,600, with 28 × 0.6 × 0.5 = 8.4 days of paid leave.
Frequently asked questions
What does pro rata salary mean?+
Pro rata means “in proportion”. A pro rata salary is the full-time salary scaled down to the hours you work, so someone working 3 days a week on a £30,000 pro rata role is paid £18,000 a year.
How do I calculate pro rata salary?+
Divide your weekly hours by the full-time weekly hours to get your FTE, then multiply by the full-time salary. For a part year, also multiply by the number of months worked divided by 12.
What is FTE?+
FTE stands for full-time equivalent. 1.0 FTE is a full-time post; 0.5 FTE is half the full-time hours. Employers use it to budget headcount and to pro-rate pay, holiday and benefits.
Is part-time holiday pro rata too?+
Usually yes. Part-time staff receive the same leave as full-time staff in proportion to their hours. In the UK, for example, the statutory 5.6 weeks is pro-rated, so a 3-day-a-week worker gets 5.6 × 3 = 16.8 days (statutory leave is capped at 28 days).
Do part-time workers get the same hourly rate?+
In the UK, EU and many other places, part-time workers must not be treated less favourably than comparable full-time colleagues, which generally means the same hourly rate. That is the assumption this calculator makes.
Sources