How Child Support Assesses Self-Employed Income

Working Out Child Support Income

Child support uses adjusted taxable income, with deductions for the parent’s self-support amount and applicable dependent-child or multiple-case allowances. The formula also accounts for care and the children’s costs. The formula applies until Services Australia changes the assessment or a court makes an applicable order.

Is Child Support Based on Gross or Net Income?

The starting point is taxable income, which is income after allowable tax deductions. Child support is therefore neither a percentage of gross business turnover nor a calculation from after-tax take-home pay.

Under section 43 of the Child Support (Assessment) Act 1989, adjusted taxable income adds these components to taxable income:

• Reportable fringe benefits.
• Target foreign income.
• Total net investment losses.
• Specified tax-free pensions or benefits.
• Reportable superannuation contributions.

Rental profit can contribute to taxable income. A net rental property loss forms part of total net investment losses and is added back for child support. The Child Support Guide explains adjusted taxable income and its investment-loss component.

Business deductions can reduce taxable income without reducing the parent’s spending capacity by the same amount. Company or trust arrangements can also leave resources available to a parent without a matching personal taxable-income figure. Those circumstances require analysis under reason 8, rather than automatically adding all business receipts to income.

Provisional Income and Income Estimates

Provisional income lets Services Australia assess child support when the relevant tax return is missing. It can use a reasonable approximation from available income information. Otherwise, the provisional-income hierarchy uses an earlier tax assessment with indexation.

Where the immediately preceding year’s assessment is unavailable, the hierarchy can require the higher of indexed earlier income and two-thirds of annualised male total average weekly earnings. Without a usable assessment, that earnings figure can apply. Provisional income is therefore not automatically zero.

An income estimate concerns the current financial year. A parent can generally elect to estimate when income is at least 15% below the figure being used. The existing income must have an accepted basis, such as an ATO assessment or a declaration Services Australia accepts. An income amount order can prevent the election.

Only the parent whose income is estimated makes that estimate. It generally takes effect when Services Australia receives it. The parent must update it when income changes, and it is reconciled against actual income after the financial year.

Income Changes After Separation

A new tax return can update the income used in an assessment. A qualifying estimate can pick up a fall sooner. Where the issue is undisclosed resources or earning capacity, use the change of assessment process.

There is also a separate exclusion for qualifying extra income earned after separation. It requires a new earning pattern beyond normal increases or seasonal changes.

The parents must have lived together for at least six months and the application must be made within three years of separation. They must remain separated. Up to 30% of adjusted taxable income can be excluded. Services Australia explains income changes and this exclusion.

Showing Real Income From Bank Statements

Bank statements show the money a parent receives and the personal expenses their business pays. Compare those flows with the tax return for the same period, while separating income from other funding.

Start with each account’s ownership and purpose. Match transfers between supplied accounts before totalling deposits. Identify customer receipts separately from loans, refunds, asset-sale proceeds and transfers of existing savings. Then examine drawings and business payments for private expenses.

A Fictional Income Comparison

Assume a self-employed parent reports taxable income of $32,000 for one financial year. The statements contain the following non-overlapping transactions. All figures are Australian dollars.

Transaction group	Annual amount	What the records establish
Drawings into the personal account	$48,000	Money transferred from the business for personal use
Home expenses paid directly by the business	$18,000	Personal costs funded outside those drawings
Private vehicle and holiday payments from the business	$12,000	Further personal spending outside the drawings
Total identified personal funding	$78,000	$48,000 plus $18,000 plus $12,000

The $78,000 exceeds reported taxable income by $46,000. That comparison supplies questions about available resources. It does not establish that adjusted taxable income is $78,000. Drawings can include previously taxed profits or borrowed money, and personal funding can come from capital.

Show the source of each amount and explain exclusions. If personal-account spending is funded by the $48,000 drawings, adding that spending again would double-count the same money. Business turnover also needs its own reconciliation to business costs.

Present a schedule with transaction date, amount, account and source PDF page. Include the parent’s explanation beside the disputed classification. Where the business pays personal costs, compare the payments with its expense ledger and any fringe-benefit treatment.

FinTrace saves hours of statement review by consolidating supplied PDFs into a searchable Excel ledger and a clear findings report. Possible undisclosed income and suspicious transfers are flagged, with each finding citing the source filename and page. Lawyers and forensic accountants can use that evidence directly when preparing the income comparison.

Change of Assessment and Departure Orders

Reason 8 addresses an unfair assessment caused by either parent’s income, property, financial resources or earning capacity. Services Australia’s form uses reason 8. The Child Support Guide separates income and resources under reason 8A from earning capacity under reason 8B.

A self-employed parent’s understated tax return usually raises the income-and-resources branch. Section 117(2)(c)(ia) addresses income and resources, while section 117(2)(c)(ib) addresses earning capacity. A lower taxable income alone does not establish special circumstances.

The Published Change of Assessment Reasons

Services Australia lists ten reasons. In plain words, they concern:

1. High costs of spending time or communicating with the child.
2. Extra costs from the child’s special needs.
3. The intended arrangements for the child’s care, education or training.
4. The child’s own income or resources.
5. Money, goods or property provided for the child’s benefit.
6. Childcare costs for a child under 12.
7. Necessary expenses reducing a parent’s support capacity.
8. A parent’s income, resources or earning capacity missing from the assessment.
9. Support obligations towards another child or person.
10. Responsibility for a qualifying resident child.

Each reason has conditions. Choose the reason the documents establish, and explain why the formula produces an unfair result in the particular circumstances.

Making the Application

Use the Application to change your assessment: Special circumstances form, CS1970. Services Australia recommends calling the Child Support enquiry line before applying.

1. Identify the reason or reasons and the change sought. State the disputed period and income figure.
2. Attach the supporting documents. For reason 8, include the comparison schedule, relevant statements and business financial records.
3. Remove personal contact or location details from supporting material where disclosure creates a safety concern. Services Australia shares Part B and supporting documents with the other parent.
4. Submit through the Child Support online account linked to myGov, or send the form by post using its instructions.
5. Address the other parent’s response and any questions from the decision-maker. The response can seek different changes.

The change of assessment process gives both parents an opportunity to respond. Services Australia sends a written decision with reasons. It can refuse the change, grant it or make a different change. Read the decision’s objection instructions and deadline before choosing the next step.

When a Court Departure Order Fits

Court departure is available through the statutory pathways, including qualifying pending proceedings or a liable parent assessed at the minimum rate. Administrative assessment is generally the first route. The Child Support Guide explains section 116 applications.

Under section 117, the court must find a departure ground and be satisfied the particular order is just and equitable and otherwise proper. The evidence must address that test, not simply allege hidden income.

The Federal Circuit and Family Court of Australia’s child support practice direction requires an Initiating Application with supporting financial material and an affidavit. Attach relevant assessments, decisions and documents exchanged with the Registrar. Address any required leave and the statutory basis in the affidavit. Separate leave applies when seeking changes more than 18 months back.

Obtaining the Business Records

Request records that explain both the business’s earnings and the parent’s access to its money. Cover the same financial year as the assessment, plus the period of any claimed change.

• Business and personal bank statements, including loan and credit-card accounts relevant to the funding.
• Tax returns and notices of assessment for the parent and relevant entities.
• Business activity statements (BAS), financial statements and detailed expense ledgers.
• Director or beneficiary loan accounts, with entries showing drawings and repayments.
• Trust deeds, distribution minutes and beneficiary account records.
• Documents supporting the explanation for non-income deposits.

Reconcile bank receipts with the accounts and BAS. Timing differences, GST and transfers can explain discrepancies. A trust distribution minute can identify an allocation without showing when money moved. Follow it into the beneficiary account and bank records. See income routed through a family trust for that evidence trail.

In court proceedings, use the applicable disclosure and subpoena procedure to obtain relevant records from the proper holder. The family court subpoena process addresses that separate task. Keep the income investigation distinct from valuing the business for the property case.

Earning Capacity and Deliberately Reduced Income

Earning capacity is the income a parent can earn from their skills and work opportunities, even when their actual income is lower. Qualifications and employment history matter, alongside available work and the parent’s circumstances.

The reason 8B guidance requires all three statutory conditions before substituting earning capacity:

1. The parent does not work despite ample opportunity, reduces weekly hours below the occupation’s usual full-time standard or changes occupation, industry or working pattern. For either work-change branch, the parent’s income must also have fallen.
2. Caring responsibilities or health do not justify that decision.
3. The parent fails to demonstrate that affecting child support was not a major purpose of the decision.

The third condition is a rebuttable presumption. It does not require child support avoidance to be the sole purpose. The decision-maker must also assess the ability and opportunity to earn more. The same section 117(7B) conditions govern a court’s earning-capacity finding.

Bank records help test what changed after a resignation or restructure. Compare customer receipts and private spending before and after the event. A fall in drawings while business-paid living costs continue raises a different question from a genuine fall in trading receipts.

Obtain the explanation for the work change and records supporting it. Health evidence, caring arrangements or unsuccessful job applications can explain reduced income. A spending pattern alone cannot settle those questions.

Understated income can lead to a changed assessment and payment adjustments. Services Australia states that an estimate below actual income can produce a debt or repayment of an overpayment. A late tax return showing income above provisional income can also produce adjustments. Those are consequences of correcting the assessment, not an automatic fixed penalty for a suspicious transaction.

Build the application around the disputed income source or work decision. Attach the transaction trail and the relevant business explanation, then show how those facts satisfy reason 8 and the change sought.