How is Australian Child Support calculated in 2026?

It is calculated using the official 8-step formula based on combined income, care percentages, and cost of living tables provided by Services Australia.

Does 50/50 care mean no child support?

Not necessarily. If there is a significant income disparity between parents, child support may still be payable even with 50/50 shared care.

About | Child Support Calculator Australia

INCOME

Your Income

Other Parent's Income

Enter the number of dependent children from other relationships for each parent. Split by age group: under 13 and 13 or older. These reduce assessed income.

<13

YOU

13+

<13

OTHER PARENT

13+

Enter the number of children from other child support cases for each parent. Split by age group: under 13 and 13 or older. This calculates multi-case allowances.

<13

YOU

13+

<13

OTHER PARENT

13+

CARE

YOU

OTHER PARENT

Period

▼

Age

Our Mission

We provide the most comprehensive Australian child support tool available. We help separated parents estimate standard assessments (Formulas 1-3) and identify complex legal scenarios (Formulas 4-6). Our goal is to provide initial clarity while connecting all parents with specialist family law advice when they need it.

How Our Calculator Works

We use the official 2026 Services Australia basic formula for standard assessments, while flagging complex cases for review:

• Formula 1: Standard separation (Single case)

• Formula 2: Care provided by a Non-Parent Carer (e.g., Grandparent)

• Formula 3: Parents with children from other relationships (Multi-case)

• Formulas 4-6: Complex cases involving non-parent carers with multi-case, overseas, or estate considerations (Referral service)

For standard cases, our calculator provides accurate estimates using the 2026 cost of children tables, care percentage adjustments, and relevant dependent considerations. For complex scenarios, we help you identify when specialist legal advice is needed.

INCOME

CARE

Our Mission

How Our Calculator Works

Important Disclaimer

Next Steps