How much is child support in Australia? This depends on a number of factors and is dependent on each parent’s income, the time children spend with each parent, and the number and ages of the children.
There is no blanket figure, every family is assessed individually. Talking to a family lawyer can be extremely helpful in navigating child support and weighing up your options.
Child support in Australia is administered by Services Australia through the Child Support Scheme. Most parents use what is called the administrative assessment, a formula calculation carried out by Services Australia that produces a payment amount based on your specific circumstances.
The formula considers five key elements:
1. Both parents’ incomes. The assessment uses each parent’s adjusted taxable income. The higher the income difference between parents, the more the higher earner is generally expected to contribute.
2. A self-support amount. Each parent is allowed to keep a portion of their income to meet their own basic living costs before child support is calculated. In 2026, this amount is indexed annually.
3. The costs of raising children. Services Australia uses a standard costs table that estimates what it costs to raise children of different ages in Australia. These estimated costs are then divided between the parents proportionally.
4. Care percentage. How much time each parent spends with the children directly affects the payment amount. The more overnight care a parent provides, the less they are required to pay or the more they may be entitled to receive.
5. Number and ages of children. Child support rates differ depending on how many children are involved and how old they are. Older children generally attract higher estimated costs.
The result of this formula is an annual child support amount, which is then divided into regular child support payments, typically monthly.
A parent earning $80,000 a year with one child spending equal time with both parents might pay several thousand dollars annually. A parent earning significantly more than the other, with children spending the majority of time with one parent, could pay considerably more.
You can use the Services Australia Child Support Estimator to get a rough figure based on your own numbers, but keep in mind the estimator does not account for every variable and is not a substitute for legal advice.
Child support rates are not fixed forever. Several life changes can trigger a reassessment, including:
If your circumstances change, you can apply to Services Australia for a change of assessment. In some cases, you may also be able to apply for a departure from the standard formula if the standard calculation produces an outcome that seems unfair given your specific situation.
Unpaid child support is a serious issue and one of the most common concerns we see in family law. If the paying parent is not meeting their obligations, Services Australia has enforcement powers including:
If you are not receiving the child support payments you are entitled to, you do not have to manage this on your own. A lawyer for child support can help you understand your enforcement options and take action on your behalf.
Yes, parents can choose to formalise their own arrangement rather than going through the Services Australia formula. There are two options:
Binding Child Support Agreements, these are legally enforceable contracts that must be prepared by a lawyer. They can set payments above or below what the formula would produce and offer more flexibility for families with complex arrangements.
Limited Agreements, these require the administrative assessment as a starting point and cannot reduce payments below that amount, but can be agreed to without legal advice.
Binding agreements in particular require both parents to have independent legal advice before signing.
Child support can become complicated quickly, especially when incomes are disputed, care arrangements are contested, or payments simply are not being made. How much is child support really worth fighting for? In many cases, the answer is: significantly more than most parents realise.
A child support lawyer in Sydney can help you understand how the formula applies to your specific situation, negotiate or formalise an agreement, apply for a change of assessment, and take enforcement action if payments have been missed.
At Lex Law Australia, our family law team helps parents across NSW navigate child support assessments, agreements, disputes and enforcement. We offer clear and honest advice, so you understand exactly where you stand and what your options are. Contact Lex Law Australia today for a confidential consultation.
