This page is for pro-rata salary math: full-time salary, full-time hours, actual part-time hours and months worked. For complete package modelling with super included or excluded, use the Australian Salary Calculator.
Part-time salary estimate
Pro Rata Salary Calculator Australia
Work out pro-rata pay for part-time hours, reduced work weeks or a partial-year Australian salary, with a simple after-tax estimate.
Part-time pay
Reduced hours
Partial year
Take-home estimate
Use after salary negotiation
Last reviewed: 10 June 2026.
Formula and example
Annualised pro-rata salary = full-time salary x actual weekly hours / full-time weekly hours. Partial-year pay = annualised pro-rata salary x months worked / 12.
Worked example: a $90,000 full-time salary reduced from 38 to 24 hours per week becomes about $56,842 annualised. In 2025-26, that produces an estimated $8,830 income tax and Medicare levy, leaving about $48,012 annual take-home before HELP.
Official context: Fair Work explains part-time employees and defines pro-rata as a proportionate amount. This calculator estimates pay and tax only, not contract entitlements or award compliance.
FAQ
Does pro-rata salary include super?
Usually salary and employer super are quoted separately, but some offers use total package wording. Check the contract wording before comparing offers.
Should I calculate by hours or days?
Use the method in your contract. Hours are usually clearer for part-time work because full-time days can hide different roster lengths.