Family Tax Benefit Calculator Australia โ FY 2025-26
Estimate your FTB Part A and Part B payments, check income test thresholds, supplements, and see how income changes affect your family payments.
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How to Use This Calculator
Tab "FTB Estimate"
Enter the number of children, each child's age, your annual income, and whether you are a single parent. For couples, add the secondary earner's income under "More options." The calculator applies both Part A income tests and gives you the higher result, plus Part B based on your youngest child's age and secondary earner income.
Tab "Income Impact"
Enter your current family income and a proposed income increase. See how much FTB you would lose if your income rises, the net benefit of the extra income after FTB reductions, and whether the effective marginal rate makes the increase worthwhile.
Tab "Supplement"
Enter your family income and number of children to see your end-of-year FTB supplement. Part A supplement is up to $938.05 per child (income under $80K). Part B supplement is up to $459.90 per family. Supplements are paid after lodging your tax return.
The Formulas
Method 1 (from max rate):
Max rate: $227.36/fn (0-12) or $295.82/fn (13-19) per child
If family income > $65,189: reduce by 20c per $1 above threshold
Annual Part A = (Max rate x 26) - (Income - $65,189) x 0.20
Method 2 (from base rate):
Base rate: $72.94/fn per child (all ages)
If family income > $94,316: reduce by 30c per $1 above threshold
Annual Part A = (Base rate x 26) - (Income - $94,316) x 0.30
FTB Part B (per family):
Max rate: $193.34/fn (youngest <5) or $134.96/fn (youngest 5-18)
Couples: primary earner must earn < $100,900
Secondary earner: no reduction below $6,935/yr; 20c/$1 above
Single parents: full Part B automatically
Supplements (end of year):
Part A: up to $938.05/child/year (family income < $80,000)
Part B: up to $459.90/family/year
All figures based on Services Australia rates for FY 2025-26, indexed 1 July 2025. Family income is the combined adjusted taxable income of both partners (or the individual's income for single parents).
Example
Sarah โ Single parent in Melbourne, 2 children aged 3 and 7, income $55,000
Sarah is a single parent so she gets full Part B and no secondary earner test applies.
Sarah receives full Part A because her income is below the $65,189 threshold. She also gets the full Part B rate because she is a single parent. Her supplements add over $2,300 at the end of the financial year.
FY 2025-26 FTB Rates
| Item | Rate / Limit |
|---|---|
| FTB Part A max (0-12) | $227.36/fortnight per child |
| FTB Part A max (13-19) | $295.82/fortnight per child |
| FTB Part A base rate | $72.94/fortnight per child |
| Part A income test 1 threshold | $65,189 (20c/$1 reduction) |
| Part A income test 2 threshold | $94,316 (30c/$1 reduction) |
| Part A supplement | Up to $938.05/child/year (income < $80K) |
| FTB Part B max (youngest <5) | $193.34/fortnight per family |
| FTB Part B max (youngest 5-18) | $134.96/fortnight per family |
| Part B secondary earner threshold | $6,935/year (couples) |
| Part B primary earner limit | $100,900 (couples) |
| Part B supplement | Up to $459.90/family/year |