Family Tax Benefit calculator

Questions people actually ask

How much Family Tax Benefit Part A will I get?

Part A is worked out twice and you get whichever pays more. The maximum-rate test pays $235.48 a fortnight per child aged 0-12 ($306.46 for 13-15), withdrawn by 20c in the dollar above $69,131 of family income and 30c above $123,078. The base-rate test pays $75.60 a fortnight per child, withdrawn by 30c only above $123,078. Most calculators model only the first, which reports $0 for middle incomes when the base-rate test is actually paying.

What is the difference between Part A and Part B?

Part A is paid per child and tested on combined family income. Part B is paid per family and helps single-parent and single-income families — it has a hard cut-out once the higher earner passes $124,327, and then tapers on the lower earner's income above $7,154. A single parent under the limit gets the maximum rate with no taper.

What are the FTB supplements?

Both parts carry an end-of-year supplement paid after your income is confirmed: $970.90 per child for Part A (only if family income is $80,000 or less) and $478.15 per family for Part B. You have to confirm your income — by lodging a tax return or telling Services Australia you don't need to — within 12 months of the end of the financial year, or you lose them.

When do I have to claim Family Tax Benefit by?

For a new baby you can claim up to three months before the due date, and within 52 weeks of the birth for fortnightly payments. As a lump sum, you have 12 months from the end of the financial year — so 30 June 2027 for the 2025-26 year. An extension to lodge your tax return does not extend this deadline.

Does Family Tax Benefit stop when my child turns 16?

Part A continues for 16-19 year olds who are in full-time secondary study. Part B continues until the end of the calendar year the youngest turns 18 for single parents and grandparent carers; for couples it stops when the youngest turns 13.