United Kingdom · Calculator

Pro Rata Salary Calculator

Enter the full-time salary for the job, the full-time hours per week and the hours or days you work, and this calculator shows your pro rata salary per year, per month and per week before tax.

Tax year 2026/27 · GOV.UK, Holiday entitlement (for the holiday line). The pro rata salary itself is arithmetic on your inputs, not a tax figure · checked 29 September 2026Sources

The salary for the job if it were worked full time, usually shown in the job advert as "£X pro rata" or "£X FTE".

The hours a full-time employee works in a normal week in this job. Your contract or the job advert usually states them.

Work out by

Hours per week, or days per week. Choose days if your contract counts days rather than hours.

Shown when you choose hours. The hours in your contract for a normal week.

Shown when you choose days. The days a full-time employee works in a normal week.

Shown when you choose days. The days in your contract for a normal week.

Pro rata salary per year live

£18,000.00

60.0% of full time

  • Pro rata salary per year£18,000.00
  • Pro rata salary per month£1,500.00
  • Pro rata salary per week£346.15
  • Your share of full time (FTE)60.0%
  • Hourly rate£15.38
  • Statutory holiday entitlement for your patternnot included (GOV.UK figure not yet checked)
See this salary after tax

Estimate for tax year 2026/27 based on GOV.UK, Holiday entitlement (for the holiday line). The pro rata salary itself is arithmetic on your inputs, not a tax figure. Not tax, legal or financial advice. Your employer's payroll may differ.

Compare two working patterns

Put two patterns side by side, such as three days and four days a week, or two different full-time salaries, and share the link that keeps both.

A commuter train window seat with a folded blank payslip on the small table.

How it works

A pro rata salary is the full-time salary scaled to the share of full-time hours you work. The calculator divides your hours by the full-time hours for the job and multiplies the full-time salary by that fraction.

  • Share of full time = your hours per week ÷ full-time hours per week
  • Pro rata salary per year = full-time salary × share of full time
  • Per month = pro rata salary per year ÷ 12
  • Per week = pro rata salary per year ÷ 52
  • Hourly rate = full-time salary ÷ (full-time hours per week × 52)

If you choose days instead, the share of full time is your days per week divided by the full-time days per week. This matches hours only when every day has the same length; if your days are shorter or longer than a full-time day, hours give the closer figure.

The hourly rate does not change when a job is pro rata: you are paid the same for each hour as a full-time colleague, for fewer hours. The per week figure divides the year by 52, which is how many employers show weekly pay; a payroll that counts 52 weeks and one day, or pays by a different method, can differ slightly.

Pro rata applies to holiday too. Almost all workers are entitled to a statutory minimum number of weeks of paid holiday a year, and part-time workers get the same number of weeks, which comes to fewer days or hours because each week is shorter (GOV.UK, Holiday entitlement). For a full-time week the statutory entitlement is capped at a set number of days. The calculator does not show the holiday figure yet, because the GOV.UK figures are still being checked. Your employer can give more than the statutory minimum, and bank holidays may or may not be counted within it; your contract says which. The holiday line covers workers with fixed weekly hours or days; workers with irregular hours or who work only part of the year have holiday worked out a different way, set out on the same GOV.UK page. Northern Ireland publishes its own holiday guidance on nidirect.

The pro rata salary is before tax. Income Tax, National Insurance, pension and student loan come off it in the same way as any salary; the button under the result sends the figure to the take-home pay calculator to show them.

Worked example

A job is advertised at £30,000 pro rata for a full-time week of 37.5 hours, and you would work 22.5 hours a week. Your share of full time is 60.0%, so the pro rata salary is £18,000.00 a year, £1,500.00 a month or £346.15 a week, at an hourly rate of £15.38. Pressing See this salary after tax opens the take-home pay calculator with £18,000.00 filled in, where the standard tax code 1257L leaves £1,373.34 a month after Income Tax and National Insurance in England, Wales and Northern Ireland for 2026/27 (HMRC, Rates and thresholds for employers 2026 to 2027).

Frequently asked questions

What does pro rata mean on a job advert?

It means the salary shown is for full-time hours, and you are paid the share of it that matches the hours you work. A job at £30,000 pro rata worked for half the full-time hours pays half of £30,000 before tax.

How do I work out a pro rata salary?

Divide your weekly hours by the full-time weekly hours for the job, then multiply the full-time salary by the result. The calculator does this and shows the answer per year, month and week.

How much holiday do part-time workers get in the UK?

Almost all workers get a statutory minimum of paid holiday each year, and for part-time workers this is worked out pro rata on the days or hours they work (GOV.UK, Holiday entitlement). Your contract can give more than this.

Is a pro rata salary taxed differently?

No. Income Tax and National Insurance are worked out on the salary you are actually paid, in the same way as for a full-time salary (HMRC, Rates and thresholds for employers 2026 to 2027). A lower salary can mean a larger share of it falls within the tax-free Personal Allowance.

What does FTE mean?

FTE stands for full-time equivalent. An FTE of 0.6 means you work 60% of full-time hours, and a pro rata salary is the full-time salary multiplied by your FTE.