Free · No credit card

How much child support will you pay or receive?

Four questions, 60 seconds. Services Australia Formula 1 with the Cost of Children table — same engine the dashboard estimator uses.

This is the basic CS calc (Formula 1) — same depth as Services Australia's own. NestWise's full estimator adds:
  • Per-child care % — when kids spend different amounts of time with each parent
  • Shared-care % impacts across CS, FTB-A, and CCS in one view
  • FTB-A Maintenance Income Test integration — rare in competitor calcs; shows the real impact on your fortnightly FTB-A
  • RDCA — kids from a new relationship reduce your CS income
  • Multi-case Formula 3 — when a parent has more than one CS case
  • Assessment scanner (PDF/photo OCR) + Expense tracker with NAP classification
  • Extra Day calculator — and how more income changes your CS + FTB-A together
Adjusted taxable income for child support (taxable income + reportable fringe benefits + reportable super + tax-free pensions + investment losses + foreign income). For PAYG workers, your salary is usually close.
Their ATI for child support. If you don't know exactly, use a best guess — Services Australia uses both parents' ATO-assessed figures in the actual assessment.
Cost of Children jumps at age 13. Pick the band that matches most of your kids.
0% (no care)50% (shared)100% (sole care)
Percentage of nights the kids spend with you over a typical fortnight. The formula treats this as the same % for every child in the case (the playground simplification).
Sign up free to see your child support estimate

Last step — 30 seconds.

Free account · no credit card · your result is saved to your profile so you can compare scenarios later.

By signing up you agree to our privacy policy. We never share your data.

Not financial advice · Services Australia 2025-26 figures · NestWise estimate, verify before relying on it · Services Australia