Child Support Calculator Western Australia [2026] — WA Guide
Child support in Western Australia is calculated using Australia's national federal formula. However, WA has one important difference from other states: it has its own Family Court — the Family Court of Western Australia — which operates alongside the Federal Circuit and Family Court of Australia for certain family law matters.
Calculate Child Support in Western Australia
The formula is identical across all states. Enter your details and get your 2026 estimate in under a minute.
Use Free CalculatorIs Child Support Different in Western Australia?
The child support formula and assessment process is identical to every other state — Services Australia handles all assessments nationally. But Western Australia has one significant structural difference: it has its own state-based Family Court of Western Australia, which operates alongside the Federal Circuit and Family Court of Australia for certain family law matters.
For most child support matters this distinction doesn't change your day-to-day experience. But if your situation involves both child support and parenting orders, understanding which court applies matters.
How to Calculate Child Support in Western Australia
Use the calculator above. For a full formula explanation and worked examples, see: How is child support calculated in Australia.
Applying for Child Support in Western Australia
Apply through Services Australia via myGov (my.gov.au) or call 131 272. All child support assessments are processed centrally.
The Family Court of Western Australia — A WA-Specific Difference
Unlike every other state, Western Australia has its own Family Court operating under state legislation (the Family Court Act 1997 WA). It handles:
- Parenting orders
- Property settlement
- Child maintenance for children over 18 in special circumstances
- Enforcement of certain child support agreements
150 Terrace Road, Perth WA 6000
Phone: (08) 9224 8222
Website: familycourt.wa.gov.au
The Federal Circuit and Family Court of Australia also has a Perth registry:
111 St Georges Terrace, Perth WA 6000
Phone: 1300 352 000
Legal Aid Western Australia
| Service | Contact |
|---|---|
| Legal Aid WA advice line | 1300 650 579 |
| Online enquiry | legalaid.wa.gov.au |
| Perth office | 55 St Georges Terrace, Perth WA 6000 |
| Regional offices | Albany, Broome, Bunbury, Geraldton, Kalgoorlie, Karratha, Port Hedland |
Community Legal Centres in Western Australia
- Community Legal WA (statewide finder): communitylegal.org.au
- Fremantle Community Legal Centre
- Circle Green Community Legal (Perth)
- Kimberley Community Legal Services (Broome, Kununurra, Derby)
- Goldfields Community Legal Centre (Kalgoorlie)
- SCALES — Southern Communities Advocacy Legal and Education Service (Rockingham, Mandurah)
Child Support and Family Violence in Western Australia
- Crisis Care: (08) 9223 1111 or 1800 199 008 (24/7, regional WA)
- Legal Aid WA family violence unit: 1300 650 579
- Women's Legal Service WA: (08) 9272 8800
- Family Violence Legal Service Aboriginal Corporation (regional WA): 1800 199 008
Remote and Regional WA
Services Australia handles everything by phone and through myGov. Legal Aid WA provides telephone and video appointments for regional clients with offices in Broome, Geraldton, Kalgoorlie, Karratha, and Port Hedland.
Frequently Asked Questions — Western Australia
Does WA have a separate child support system?
No — child support is a federal scheme identical across all states. The only WA-specific difference is the Family Court of Western Australia, which handles some family law matters alongside the federal court.
Which court do I use in WA — the Family Court of WA or the Federal Court?
For standard child support matters, Services Australia handles everything without court involvement. If you need a court order, WA has both courts. A family lawyer can advise which applies to your situation.
Where can I get free child support advice in Western Australia?
Legal Aid WA (1300 650 579), your nearest community legal centre, or the Family Law Advice Line (1800 050 321).
I live in the Pilbara or Kimberley — how do I deal with child support remotely?
Services Australia manages everything by phone (131 272) and through myGov. You don't need to travel to Perth.