Child Support Calculator South Australia [2026] — SA Guide
Child support in South Australia is calculated using the same federal formula as every other Australian state. The formula is national — administered by Services Australia, not the South Australian government. What differs in South Australia is where to get help, which courts handle family law matters, and the local resources available to you.
Calculate Child Support in South Australia
The formula is identical across all states. Enter both parents' incomes, care nights, and number of children — get your 2026 estimate instantly.
Use Free CalculatorIs Child Support Different in South Australia?
No — the calculation is identical across all states and territories. Australia uses a single national child support scheme under the Child Support (Assessment) Act 1989. If someone tells you child support works differently in South Australia, or quotes you a 'SA-specific rate', that's not accurate.
How to Calculate Child Support in South Australia
Use the calculator above. You'll need:
- Your annual adjusted taxable income
- The other parent's annual income
- Number of children
- Your care arrangement (nights per fortnight)
For a full explanation of the formula and worked examples, see: How is child support calculated in Australia.
Applying for Child Support in South Australia
Apply through Services Australia — there's no separate South Australian process:
- Go to my.gov.au and log in or create an account
- Link your account to Child Support
- Submit your application online
Alternatively, call Services Australia on 131 272 (Monday to Friday, 8am to 8pm).
Family Law Courts in South Australia
Child support disputes that escalate to court are handled by the Federal Circuit and Family Court of Australia (FCFCOA):
45 Pirie Street, Adelaide SA 5000
Phone: 1300 352 000
Legal Services Commission — Free Child Support Advice
| Service | Contact |
|---|---|
| Legal Services Commission general line | 1300 366 424 |
| Family law advice line | 1300 366 424 (ask for family law) |
| Online enquiry | lsc.sa.gov.au |
| Adelaide office | 82 Grote Street, Adelaide SA 5000 |
Eligibility for Legal Services Commission assistance may be means-tested. If you don't qualify, community legal centres across South Australia offer free advice.
Community Legal Centres in South Australia
- WestSide Community Lawyers
- Northern Community Legal Service
- Southern Community Justice Centre
- Riverland Community Justice Centre
- Women's Legal Service South Australia
National Family Violence and Legal Help Line: 1800 570 579
Child Support and the South Australian Family Violence System
If family violence is a factor:
- Services Australia has specialist family violence staff — ask when you call 131 272
- Legal Services Commission can direct you to family law and family violence services
- Domestic Violence Crisis Line provides 24/7 crisis support: 1800 800 098
- Child support collect service minimises contact between parents
Need legal help in South Australia?
Our calculator gives you an estimate. If your situation involves disputed income, a Change of Assessment, or a binding agreement, a family law specialist can help.
Related guides: Change of Assessment Private agreements What child support covers
Frequently Asked Questions — South Australia
Is child support the same in South Australia as in other states?
Yes — child support is a federal scheme with the same formula and process in every state and territory.
Where do I go for free child support advice in South Australia?
Legal Services Commission (1300 366 424), your nearest community legal centre, or the Family Law Advice Line (1800 050 321).
Can I take a child support dispute to the South Australian Magistrates Court?
No — child support matters are handled by the Federal Circuit and Family Court of Australia. The Adelaide registry is at 45 Pirie Street.
Does the South Australian government have any child support programs?
Child support is a federal scheme. The South Australian government provides support through the Legal Services Commission and community legal centres, but assessment and collection is done entirely by Services Australia.