Family Tax Benefit Calculator (Part A + Part B)
A couple with a combined income of A$90,000 (2nd parent earning A$20,000) and one 6-year-old gets about A$75.60/fortnight in FTB Part A and A$41.04/fortnight in Part B — A$116.64/fortnight total (about A$3,033/year, using our ×26 fortnights approximation). Payments taper as income rises through two separate income tests — enter your own family's numbers below to see where you land.
$116.64 total per fortnight
Part A: $75.60/fortnight ($1,966/year) · Part B: $41.04/fortnight ($1,067/year)
Annual figures use ×26 fortnights (our documented approximation — Services Australia's own published annual equivalent is closer to ×365/14, so our thresholds differ by small amounts from the official base-rate and cutoff tables).
Part A breakdown — max rate per child, then the two income tests
| Child | Age band | Max rate/fortnight |
|---|---|---|
| Child 1 | 0-12 | $235.48 |
| Sum of max rates | $235.48 | |
| Test | Reduction applied/fortnight |
|---|---|
| Stage 1 — 20c/$ above $69,131 | $159.88 |
| Stage 2 — 30c/$ above $123,078 (applies to the total, including base rate) | $0.00 |
Result stage: floored at the base rate.
Part B breakdown
Eligible.
| Amount | |
|---|---|
| Max rate (youngest 5-18) | $139.86/fn |
| Secondary-earner taper reduction | $98.82/fn |
| Part B payable | $41.04/fn |
A separate Part B supplement of $459.90 (FY2025-26) or $478.15 (FY2026-27) per family is paid after end-of-year reconciliation.
Family Tax Benefit Part A and Part B fortnightly rates, income-test free areas and taper rates verified against Services Australia (servicesaustralia.gov.au), pages last updated 1-2 July 2026. Estimate only — the Maintenance Income Test (child support received), Rent Assistance, Energy Supplement and the Newborn Supplement are NOT modelled. Annual figures use a ×26 fortnight approximation. How we calculate →
How FTB Part A is worked out
Part A pays a max rate per child that depends on their age: $235.48/fortnight for a child aged 0-12, or $306.46/fortnight for 13-15 (or 16-19 in full-time secondary study). Below a combined family income of $69,131, you get the full max rate for every child.
Above $69,131, the total is reduced by 20 cents for every extra dollar — but only down to a base rate floor of $75.60 per child. On our example (1 child aged 6, couple income $90,000), that reduction takes the payment from the $235.48 max rate down to A$75.60/fortnight (already at the base-rate floor at this income).
The second income test: 30c/$ above $123,078
Once combined family income passes $123,078, a second, steeper taper of 30 cents per dollar kicks in — and this one applies to the whole payment, including the base rate, so it can reduce Part A all the way to $0. For a couple earning A$140,000 (2nd parent on A$15,000) with a 4-year-old, that second taper brings Part A to A$0.00/fortnight.
This is the step most calculators skip: below $123,078 you're floored at the base rate no matter how much you earn above the first threshold, but above $123,078 that floor stops protecting you and the payment keeps shrinking.
How FTB Part B works (and why it's different for couples vs single parents)
Part B pays extra to families with one main income — $200.34/fortnight if the youngest child is under 5, or $139.86/fortnight if they're 5-18. Couples only qualify while the youngest child is under 13; single parents can get it up to age 18 (or during full-time secondary study).
For couples, the higher (or only) earner must be under $124,327, and the 2nd (lower-earning) parent has their own separate test: the first $7,154 of their income is ignored, then Part B tapers by 20c for every dollar above that. Single parents skip this 2nd-earner test entirely — they get the full rate as long as their own income is under $124,327. Our couple example (2nd parent on A$20,000, youngest 6) gets A$41.04/fortnight; a single parent on A$55,000 with a 6-year-old gets the full A$139.86/fortnight.
Supplements paid at reconciliation, not fortnightly
Both parts have annual supplements on top of the fortnightly rate, but Services Australia only pays them after your tax return is reconciled at the end of the financial year — they're not part of the fortnightly figure. Part A supplement: $938.05 per child (FY2025-26) or $970.90 (FY2026-27), only if family income is $80,000 or less. Part B supplement: $459.90 (FY2025-26) or $478.15 (FY2026-27) per family.
Frequently asked questions
How much is Family Tax Benefit Part A per child?
Up to $235.48/fortnight for a child aged 0-12, or $306.46/fortnight for 13-19 (in secondary study), if family income is $69,131 or less. Above that, the total tapers by 20c/$ down to a base rate of $75.60 per child, then by a steeper 30c/$ (on the whole payment) once income passes $123,078.
What is the FTB Part A income test?
Two stages: a 20 cents per dollar reduction above $69,131 (floored at the base rate, $75.60/child/fortnight), then a second 30 cents per dollar reduction above $123,078 that applies to the whole payment including the base rate, potentially down to $0.
How much is Family Tax Benefit Part B?
$200.34/fortnight if your youngest child is under 5, or $139.86/fortnight if they're 5-18. Couples qualify only while the youngest is under 13; single parents up to 18 (or during secondary study).
Does FTB Part B have an income test?
Yes, for couples: the higher earner must be under $124,327, and the 2nd (lower) earner has their own test — the first $7,154 is free, then it tapers by 20c/$ (cutting out around $35,661 if the youngest is under 5, or $27,777 if 5-13). Single parents only face the $124,327 limit on their own income — no 2nd-earner test.
Are the FTB supplements included in the fortnightly amount?
No. The Part A supplement (up to $938.05/child in FY2025-26, $970.90 in FY2026-27, for families on $80,000 or less) and Part B supplement ($459.90 or $478.15 per family) are only paid after your income is reconciled at the end of the financial year — they're shown separately in this calculator.
What isn't this calculator modelling?
The Maintenance Income Test (child support received or paid), Rent Assistance, the Energy Supplement, and the Newborn Supplement/Upfront Payment are not modelled — all of these can change your real FTB entitlement.
Researched & verified by the Calcuris Data & Research Team. How we build and check our tools →