Family Tax Benefit · calculator
Family Tax Benefit calculator
Both parts of Family Tax Benefit for your family, with the income test worked out the way Centrelink does it.
Checked by Radif Partners · Editorial policy · How we calculate
Family Tax Benefit Part A pays up to $235.48 a fortnight for each child under 13 and $306.46 for a teenager aged 13 to 19 at secondary school in 2026-27, and Part B adds up to $200.34 a fortnight when the youngest child is under 5. Above a family income of $69,131, Part A falls by 20 cents in the dollar until it reaches the base rate of $75.60 per child, which is protected until $123,078; beyond that, 30 cents. A couple with children aged 4 and 9 and a family income of $95,000 receives about $374 a fortnight from both parts, plus supplements after tax time. The calculator below runs Method 1 and Method 2 side by side, adds Rent Assistance for private renters, and drops the income test entirely when a parent receives an income support payment, as the Family Assistance Guide requires.
Family Tax Benefit per fortnight
$344
Plus $478 of supplements after the tax return · $9,437 for the year
- Part A$257
- Part B$86
| Part A, Method 1 (year) | $6,705 |
| Part A, Method 2 (year) | $3,942 |
| Part A supplement after tax time | $0 |
| Part B supplement after tax time | $478 |
Part A on a family income of $97,000: Method 1 pays more. How this is worked out.
What the result is made of
The headline figure is what Centrelink would pay each fortnight during the year: Part A and Part B, both without their supplements, because the supplements are only paid once your family income for the year has been confirmed. They appear underneath, as an amount to expect after the tax return. If you rent privately and have at least one child, Rent Assistance is part of Part A and shown inside it, worked out on your rent with the family thresholds of $5,405.65 a year for a single parent and $7,993.50 for a couple.
For a teenager, enter the age they will be for most of the year. Children aged 16 to 19 count only while they are in full-time secondary school, or doing an equivalent course, and the calculator assumes they are. Part B for a couple stops when the youngest child turns 13; for a single parent it continues until the end of the year the youngest turns 18, if still at school.
Method 1, Method 2 and the gap between them
The two methods are not options you choose. Centrelink works out both and pays the higher. Method 1 begins at the maximum rate and is the one that counts for most families with a modest income. Method 2 begins at the much lower base rate but only starts tapering at $123,078, so it takes over in the upper part of the range. With two children aged 4 and 9, Part A reaches the base rate at about $110,814 of family income and stops altogether at about $136,218. The detail under the result shows both annual amounts so you can see which one is paying.
Which income to use
Family Tax Benefit looks at adjusted taxable income for the whole financial year, from 1 July to 30 June. For a couple, Part A adds both incomes; Part B looks at them separately, first the higher earner against the $124,327 limit, then the lower earner, whose income above $7,154 reduces Part B by 20 cents in the dollar. During the year Centrelink pays on your estimate. After the year ends it compares what was paid with what your actual income gives, which is why an estimate set too low becomes a debt, and why a pay rise late in the year is worth reporting.
When the figures were checked
The rates are those published in Family Assistance Guide 3.1.1.20 for the 2026-27 income year; Rent Assistance with FTB moved on 20 September 2026. The engine reproduces the Method 2 worked example of section 3.1.8.20 to the cent. Each part has its own guide: Part A, Part B, the income test and the rate tables.