AusChildSupport

Maintained Australian reference

Child support and Centrelink: what affects what?

There is no single “Centrelink rule”. Child support, income support and family assistance are separate systems. A change in one can matter to another—but not always in the way people expect.

01 Start with the right system

Three calculations. Different questions.

“Centrelink” is commonly used as a broad label for payments and services delivered by Services Australia. An income support payment is narrower. Family Tax Benefit is family assistance, with its own child-support maintenance rules.

  1. 01

    Child support

    Child support assessment

    Uses the parents’ relevant incomes, care and case circumstances to work out child support.

  2. 02

    Pension or allowance

    Income-support income test

    Tests income under the rules for the particular pension or allowance. Child maintenance is generally not ordinary income for this purpose.

  3. 03

    Family assistance

    Maintenance rules

    Can change FTB Part A above the base rate and can interact with maintenance action, collection and balancing.

The key distinction: one result does not automatically decide the others. “Adjusted taxable income” also means different things in different contexts.

Official sourceServices Australia — how adjusted taxable income is used · DSS — maintenance and ordinary income

On this page

02If you receive a Centrelink payment

First ask how that payment enters child support income.

Child support generally begins with adjusted taxable income (ATI). That is not the same calculation as the ordinary income test used for an income support payment.

A government payment may enter child support ATI because it is taxable income, or because it is one of the specified tax-free pensions or benefits added to ATI. Some amounts are specifically excluded. The label “Centrelink payment” is not enough to decide the treatment.

Services Australia will usually use ATI for the financial year that ended before the current child support period. If a tax return is unavailable it may use a provisional income. A valid income estimate uses the current financial year and has its own conditions.

Check the income year and income type on the Formal Assessment. If your current circumstances changed, do not assume the official income has already updated.

How government-related amounts may enter child support adjusted taxable income
Type of amountHow it may enter ATIWhat to verifyOfficial source
Taxable government paymentMay form part of taxable income.The payment’s tax treatment and the taxable income recorded for the relevant year.DSS ATI guide
Specified tax-free pension or benefitMay be added as a separate ATI component even though it is tax-free.Whether the amount is one of the specified benefits for child support.DSS ATI guide
Excluded amountDoes not enter ATI where legislation or policy specifically excludes it.The exact payment—not a broad “Centrelink” category.DSS excluded amounts
Last-year, provisional or estimated incomeDetermines which period and figure Services Australia uses.The basis printed on the assessment and whether a current estimate is available.Services Australia income guidance

Official sourceDSS Child Support Guide 3.1.1 · Services Australia — how income affects child support

03If you receive child support

Then follow the rule in the receiving system.

Receiving child support does not automatically reduce every Centrelink-administered payment.

A

Income-support income test

Child maintenance received for a child is generally not assessed as ordinary income under the income test for income-support purposes.

This is not a promise about every payment delivered by Centrelink. A payment can have other rules, and dependent Youth Allowance has a separate maintenance test.

Read the DSS ordinary-income guidance

B

FTB Part A maintenance rules

The Maintenance Income Test can reduce the part of FTB Part A above the base rate when maintenance is over the applicable free area. The Maintenance Action Test is a separate rule about taking reasonable action to obtain child support.

Collection method matters at balancing: Private Collect generally uses the assessed entitlement, while Child Support Collect balancing generally uses the amount actually received.

Read the official balancing guidance

Official sourceDSS Social Security Guide 4.3.9.10 · DSS Family Assistance Guide 3.1.7.10 · DSS dependent Youth Allowance maintenance test

04If you owe child support while receiving income support

Low income does not always mean a zero assessment.

The calculator can apply the fixed annual rate and minimum annual rate rules from the facts entered. A reduction of the minimum rate to nil is a separate application to Services Australia, and collection from an income support payment is a separate administrative action.

01

Ordinary formula

The calculation uses the relevant parent incomes, care and case circumstances. A low income can produce a low amount, but not necessarily zero.

02

Fixed annual rate

This is a distinct rule for some paying parents with low ATI who did not receive an income support payment in the last relevant year and have less than shared care. Services Australia also considers the other statutory conditions.

03

Minimum annual rate

This may apply when the formula amount is below the minimum, the parent has below regular care for all children and the fixed annual rate does not apply. A parent may apply to have a minimum assessment reduced to nil where the separate conditions are met.

Official sourceDSS fixed annual rate · DSS minimum annual rate · Child Support (Registration and Collection) Act 1988

06Two bounded illustrations

The direction of the rule, without pretending to predict your result.

Illustration 01 · Paying

An income-support payment does not automatically make the assessment zero.

Jordan starts receiving an income support payment. The current Formal Assessment still shows child support payable. That can happen because the assessment uses a defined income period and the minimum-rate rules may still be relevant. Jordan should check the income basis and rate with Child Support; the payment change alone does not decide the result.

Illustration 02 · Receiving

The same child support can matter differently in two receiving-system tests.

Alex receives child support and FTB Part A while also receiving an income-support payment. The child maintenance is generally not ordinary income for the income-support income test, but it can still affect FTB Part A through the Maintenance Income Test. The collection method can then affect FTB balancing.

These fictional illustrations explain rule direction only. They are not predictions of a child support amount, Centrelink entitlement or balancing outcome.

07Practical next step

Send the question to the team that can actually decide it.

Where to start for common child support and Centrelink questions
If the issue is about…Start hereWhy
Testing an indicative child support amountAusChildSupport calculatorProduces a private Estimate from the information entered.
The income used in a Formal AssessmentChild Support Services Australia controls the official assessment and accepted income information.
FTB Part A, balancing or the Maintenance Action TestCentrelink Families These are family-assistance matters.
A deduction from an income-support paymentChild Support It concerns collection of a child support liability or debt.
Safety when seeking or collecting supportServices Australia support and exemption pathway Individual circumstances need safe, official handling.
Disputed or legally complex circumstancesServices Australia or qualified adviceA public page cannot decide disputed facts, rights or legal strategy.

08Focused questions

Short answers to the questions that remain.

Does Centrelink count as income for child support?

There is no single rule for every Centrelink payment. Child support generally starts with adjusted taxable income: taxable government payments can enter through taxable income, and specified tax-free pensions or benefits can be added separately. Some amounts are excluded. Check the payment and the income figure Services Australia used.

Official sourceCheck the official rule

Does child support reduce JobSeeker, Parenting Payment or Disability Support Pension?

Child maintenance is generally not ordinary income under the income test for income-support purposes. That does not mean it is irrelevant to every payment administered by Centrelink: FTB Part A has separate maintenance rules, and a separate maintenance test can apply to dependent Youth Allowance. Ask Services Australia about the exact payment.

Official sourceCheck the official rule

Why do I still pay child support when I am on income support?

Receiving income support does not automatically set a child support assessment to zero. The formula, care, the income period and the minimum-rate rules can still produce an amount. Receiving an income support payment in the last relevant year is also relevant to whether the fixed annual rate can apply.

Official sourceCheck the official rule

What is the difference between the fixed and minimum annual rates?

They are different rules. The fixed annual rate can apply where a paying parent has low adjusted taxable income, did not receive an income support payment in the last relevant year and has less than shared care. The minimum annual rate can apply where the formula amount is lower, the parent has below regular care for all children and the fixed rate does not apply.

Official sourceCheck the official rule

Can child support be taken from my Centrelink payment?

Yes. If Services Australia is collecting the child support, it can deduct an ongoing liability or arrears from specified income support payments. A satisfactory payment arrangement can affect whether collection is made from the payment. Contact Child Support about the amount being deducted, an account discrepancy or financial hardship.

Official sourceCheck the official rule

Does receiving child support affect Family Tax Benefit Part A?

It can. The Maintenance Income Test can reduce the part of FTB Part A above the base rate. The amount used at balancing can also differ depending on whether the case is Private Collect or Child Support Collect.

Official sourceCheck the official rule

What happens if the income used for child support is out of date?

Services Australia usually uses adjusted taxable income for the last relevant year. If a return is unavailable it may use provisional income; a valid current-year estimate may be possible after a qualifying change. Check the assessment and contact Child Support promptly rather than assuming a new payment automatically updates it.

Official sourceCheck the official rule

What if applying for or collecting child support is unsafe?

You do not need to explain personal circumstances on this page. Services Australia says exemptions from the Maintenance Action Test may be available, including where there is family or domestic violence or other abuse. Contact the Centrelink Families line or another Services Australia support pathway to discuss options safely.

Official sourceCheck the official rule

09Sources & boundaries

Current sources, visible limits.

Official sources were checked on 2 August 2026. Rules, rates and operational guidance can change; use the linked source for the current position.

AusChildSupport is independent and is not a government service.

The calculator produces an indicative Estimate. An Estimate is not a Formal Assessment. Services Australia issues and changes Formal Assessments.

This page is general information—not legal, tax or financial advice, a payment calculator, an eligibility decision, an account-management service or a promise that an assessment, entitlement or deduction will change.