Estimate your Family Tax Benefit Part A and Part B. Both parts have their own income test, and Part B works on the lower earner's income rather than the family total, which is why the answer is rarely what people expect.
Same family, different family income. Your figure is highlighted.
| Family income | Part A | Part B | Per fortnight |
|---|
They are two separate payments with two separate income tests, and people routinely assume one number covers both. Part A is per child and tested on your combined family income. Part B is per family and tested mainly on the lower earner's income, which means a second job or a return to work can cut it sharply even when family income is modest.
Each child attracts a maximum rate based on age. All of them are added together, then one income test is applied to the total.
20 cents in the dollar above the income free area, down to the base rate. Then 30 cents in the dollar above the higher free area, down to nothing.
One payment regardless of how many children, set by the age of the youngest. It stops entirely if the higher earner is above the primary earner limit.
Partnered families stop getting Part B once the youngest child turns 13. Single parents and grandparent carers keep it to 18.
Family Tax Benefit is indexed on 1 July and again on 1 January, so these figures change twice a year.
| Item | Amount |
|---|---|
| Part A, child aged 0 to 12 | $235.48 per fortnight |
| Part A, child aged 13 to 19 in study | $306.46 per fortnight |
| Part A base rate, per child | $75.60 per fortnight |
| Part A income free area | $69,131 |
| Part A higher income free area | $123,078 |
| Part A supplement, per child | $970.90 per year |
| Part A supplement income limit | $80,000 |
| Part B, youngest child under 5 | $200.34 per fortnight |
| Part B, youngest child 5 to 18 | $139.58 per fortnight |
| Part B primary earner income limit | $124,327 |
| Part B secondary earner income free area | $7,154 |
| Part B supplement, per family | $478.15 per year |
It is broader than your taxable income. Services Australia adds back reportable fringe benefits, reportable super contributions such as salary sacrifice, net investment losses including negative gearing, tax free pensions and any foreign income. Salary sacrificing into super lowers your taxable income but does not lower your adjusted taxable income, so it will not increase your FTB.
Part B is tested on the lower earner's income. Once that income passes $7,154 the payment falls by 20 cents in the dollar, so it runs out fairly quickly. With a youngest child under 5 the payment reaches zero at about $33,200 of secondary income. The higher earner's income does not taper Part B at all, but if it is above $124,327 the whole payment stops.
They are lump sums paid after the financial year ends, once Services Australia balances your payments against your actual income. The Part A supplement is up to $970.90 per child but only if your family income is $80,000 or less. That is a hard cliff: one dollar over and the whole supplement is gone for every child. The Part B supplement is up to $478.15 per family. Both are used first to offset any overpayment during the year.
Yes. You and your partner must either lodge a tax return or tell Services Australia you do not need to, and you generally have until 30 June the following year to do it. Miss that deadline and you can lose the supplements entirely and may have to repay FTB you already received.
The maintenance income test, which reduces Part A if you receive child support. Rent assistance, multiple birth allowance, large family supplement, newborn supplement and newborn upfront payment. Shared care percentages, which split the payment between carers. The energy supplement, which closed to new recipients on 20 September 2016. Immunisation and health check requirements, which can reduce Part A if not met.
Estimate only. Family Tax Benefit is paid by Services Australia, not the ATO, and
this calculator covers the standard Part A and Part B income tests only. It excludes the maintenance
income test, rent assistance, multiple birth allowance, large family supplement, newborn supplement,
shared care arrangements, immunisation requirements and the energy supplement. Annual figures use
365/14 fortnights, which is how Services Australia converts between the annual and
fortnightly rates. Your actual entitlement is worked out by
Services Australia and is balanced against your real income after you lodge your tax return. It is
general information, not financial advice. For your own circumstances, contact Services Australia.
Rates from 1 July 2026. Family Tax Benefit is indexed on 1 July and 1 January.
Rates last verified: 9 September 2026.
