What ParentMath recalculates
The calculator changes employment income, estimated resident income tax, a simplified Medicare levy, family ATI, CCS percentage, care days and the resulting childcare gap.
What does returning after parental leave add to the family budget?
Compare the household income left after estimated tax and childcare for each possible work pattern. Enter the returning parent’s full-time salary, partner income, workdays and the care required for each child. ParentMath then recalculates family income, CCS and the childcare gap for the adjacent workday.
Compare return-to-work daysA third workday adds an estimated $204.28 a week
One parent has an $80,000 full-time salary and returns for two days, while their partner earns $100,000. One child attends a 10-hour, $150 session for each workday. Moving from two to three days increases estimated household income after tax and childcare by $10,622.60 a year.
What still belongs in the family decision
Government Parental Leave Pay, employer leave, commuting, work clothing, meals, superannuation and career effects are outside this estimate. Add them separately before deciding.
Quick answers
Return-to-work questions
How do I compare return-to-work days after parental leave?
Compare household income after estimated tax and childcare across the work patterns you are considering.
Does ParentMath calculate Parental Leave Pay?
No. It compares employment income, estimated tax, CCS and childcare costs, not government or employer leave payments.
CCS settings checked 11 September 2026 against Services Australia and the Department of Education. Tax settings checked against the 2026–27 legislation. Example verified against calculator.mjs.