Family Tax Benefit: what the estimate includes

Family Tax Benefit Part A depends on eligible children and adjusted family income. Part B has separate rules involving the youngest child and each parent’s income. Our calculator estimates standard Part A only.

2026–27 Part A rates

Maximum fortnightly rates are $235.48 per child aged 0–12 and $306.46 per eligible child aged 13–19. Children aged 16–19 must meet secondary-study requirements. The base rate is $75.60 per child.

Up to $69,131 adjusted family income, the model uses the maximum rate. Between $69,131 and $123,078, the annual rate reduces by 20 cents per excess dollar, down to the base rate. Above $123,078, the rate at that threshold reduces by 30 cents per additional dollar, to zero. Families with more children may still receive more than the base rate at the upper threshold.

Worked example

For two children under 13 and $85,000 adjusted family income, the maximum is $470.96 per fortnight, equivalent to $12,278.60 over 365 days. The income reduction is ($85,000 − $69,131) × 20% = $3,173.80 annually. The estimate is $9,104.80 annually, or about $349.23 per fortnight.

Exclusions

Part B cannot be determined from single-parent status alone and is not calculated. End-of-year supplements, Rent Assistance, shared care, maintenance-income tests and income-support exemptions are excluded. The Part A supplement has an $80,000 family income limit and other eligibility requirements. Immunisation and Healthy Start for School rules can affect payment rates.

Check Part A rates and income tests. Use the Part A calculator with these limitations in mind.