Australia Child Support Estimator 2026
Free Australia child support estimator for 2026. Estimate child support using the official Services Australia 8-step formula, Costs of Children Table, and care percentage.
8-Step FormulaCosts of Children TableCare Percentage100% Free
Legal Disclaimer: This calculator provides an estimate only and is not legal advice. Services Australia makes final determinations regarding child support assessments. This tool does not claim accuracy or approval from any government agency. Australian calculations use the 8-step formula and Costs of Children Table. Consult with a family law lawyer for legal advice specific to your situation.
Child Support Calculator
Estimate child support based on state guidelines, income, and custody arrangements
Australia uses an 8-step formula based on both parents' income, care percentage, and the Costs of Children Table.
Enter Parent A's parenting time percentage (0-100). Parent B's percentage will be calculated automatically.
Key Values for 2026
Self-Support Amount
$28,463
1/3 of MTAWE
Annualised MTAWE
$85,389
Male Total Average Weekly Earnings × 52
Income Cap
$213,473
2.5 × MTAWE
Official Source: Child Support Guide - Formula Tables & Values
The 8-Step Child Support Formula
Costs of Children Percentages (2024)
The costs are calculated as a percentage of combined child support income, varying by income bracket and children's ages.
| Children | 0-0.5 MTAWE | 0.5-1 MTAWE | 1-1.5 MTAWE | 1.5-2 MTAWE | 2-2.5 MTAWE |
|---|---|---|---|---|---|
| Children aged 0-12 years | |||||
| 1 child | 17% | 15% | 12% | 10% | 7% |
| 2 children | 24% | 23% | 20% | 18% | 10% |
| 3+ children | 27% | 26% | 25% | 24% | 18% |
| Children aged 13+ years | |||||
| 1 child | 23% | 22% | 12% | 10% | 9% |
| 2 children | 29% | 28% | 25% | 20% | 13% |
| 3+ children | 32% | 31% | 30% | 29% | 20% |
Frequently Asked Questions - Australia Child Support
Official Australian Government Resources
Legal Disclaimer: This Australia child support calculator provides an estimate only and is not legal advice. Services Australia makes final determinations regarding child support assessments based on verified income from the ATO. Actual amounts may differ due to relevant dependent children, income adjustments, and other factors not captured here. For an accurate assessment, use the official Services Australia Child Support Estimator or contact Child Support on 131 272.