Pro Rata Salary Calculator

How the pro rata salary calculator works

1. 1

   Enter the advertised full-time salary

   Job ads that list a salary as pro rata are quoting the full-time equivalent. Enter that headline figure first, since everything else in this calculator is a proportion of it rather than a separate rate of pay.

2. 2

   Enter the full-time hours for the role

   Fair Work's National Employment Standards use 38 hours as the maximum standard full-time week, but a role can set its ordinary hours lower under an award or agreement. Use the employer's own full-time figure rather than a general assumption.

3. 3

   Enter the hours you actually work

   The ratio between your hours and full-time hours is the share of the salary you receive. The calculator shows this ratio explicitly so you can check an offer against the advertised full-time figure.

4. 4

   Add a part-year period if you are not working the full year

   If you are starting, leaving, or on a fixed-term contract for only part of the year, set the number of months. The calculator then shows both the annualised salary and the amount for that shorter period.

The pro rata salary formula

Pro rata annual salary = full-time salary x (your hours / full-time hours) Part-year pay = pro rata annual salary x (months worked / 12)

• •The hours ratio and the part-year ratio apply separately, so a half-time role for six months pays a quarter of the full-time annual salary.
• •The monthly figure divides the pro rata annual salary by twelve and the weekly figure divides it by 52.
• •Pro rata scaling applies to salary. Annual leave and other NES entitlements follow their own weeks-based calculation and are not simply the same percentage of a full-time day count.
• •This calculator works in gross pay. PAYG withholding and the Medicare levy are calculated from the pro rata figure, not from the full-time equivalent.

Worked example: 22.8 hours a week on an $80,000 full-time salary

A role is advertised at $80,000 a year pro rata, based on a 38-hour full-time week. The successful candidate will work 22.8 hours a week for the whole year.

Full-time salary

$80,000

Full-time hours per week

38

Hours actually worked per week

22.8

Proportion of full time

60%

Pro rata annual salary

$48,000.00

Monthly gross pay

$4,000.00

Weekly gross pay

$923.08

The role pays $48,000 a year, which is 60% of the $80,000 full-time equivalent salary.

What pro rata does and does not cover

Pro rata is about the ratio, not a lower rate of pay

A pro rata salary should reflect the same hourly value as the full-time equivalent, and must still meet the applicable award or minimum wage rate at that hourly value. If the implied rate is lower than the relevant minimum, that is a compliance issue rather than a pro rata calculation.

Annual leave is pro-rated in weeks, not by salary percentage

Under the National Employment Standards, part-time employees accrue annual leave proportionally to their ordinary hours, expressed in weeks rather than as a flat percentage of a full-time day count. Use a dedicated annual leave calculator for entitlement rather than applying the salary ratio directly.

Superannuation still applies proportionally to actual earnings

Superannuation Guarantee contributions are calculated on ordinary time earnings, so they naturally scale with the pro rata salary -- but check whether the role also involves any salary-sacrifice arrangement that needs separate adjustment.

Part-year and part-time are separate reductions

Working reduced hours for only part of the year applies both reductions. The calculator keeps them visible so you can see whether an offer reflects the hours, the period, or both.

Frequently asked questions

What does pro rata mean on an Australian job ad?

It means the salary shown is the full-time equivalent and your actual pay will be a share of it based on the hours you work. An $80,000 pro rata salary for a role worked at 22.8 hours a week on a 38-hour full-time pattern pays $48,000. Employers quote the full-time figure so candidates on different hours can compare a role on a like-for-like basis.

How do I calculate my pro rata salary?

Divide your weekly hours by the employer's full-time weekly hours, then multiply the full-time salary by that fraction. For 22.8 hours against a 38-hour week the fraction is 0.6, so an $80,000 salary becomes $48,000. If you are also only working part of the year, multiply again by the months worked divided by twelve.

Is 38 hours always full-time in Australia?

It is the maximum standard hours under the National Employment Standards for a full-time employee, but an award, enterprise agreement or individual contract can set ordinary full-time hours lower. Always use the specific role's stated full-time hours when checking a pro rata figure, since the same part-time hours produce a different result against different full-time baselines.

Is my annual leave also 60% if I work 60% of full-time hours?

Not exactly. Under the NES, part-time employees accrue annual leave proportionally to their ordinary hours of work, calculated in weeks rather than as a straight percentage applied to a full-time day count. The two figures are usually close but the underlying calculation is different, and it matters for accurate leave balances.

Is a pro rata salary calculated before or after tax?

Before. The pro rata figure is your gross salary, and PAYG withholding and the Medicare levy are then calculated from that reduced amount. Because Australia's tax-free threshold and tax brackets are not adjusted for part-time hours, a lower pro rata salary is typically taxed at a lower average rate than the full-time equivalent.