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When seeking clear legal advice from child support lawyers, it can help you understand how child support applies to your family, respond to an assessment and choose an arrangement that is workable over the longer term.
O’Dea Lawyers assists parents and eligible carers with child support assessments, limited and binding agreements, changes of assessment, objections, unpaid child support and the court or tribunal processes available in particular cases.
Whether you expect to pay or receive child support, early advice can help you understand your obligations, identify important deadlines and avoid informal arrangements that do not provide the protection you expected.
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How child support works in Australia
Child support is generally administered by Services Australia under Commonwealth law. It is not calculated under a separate South Australian formula.
Services Australia can make an administrative assessment setting the amount one parent pays the other. Parents may instead be able to formalise an agreed arrangement through a limited or binding child support agreement.
Child support is related to, but legally separate from:
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- Parenting arrangements determining how decisions and care are managed.
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- Property settlement following separation.
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- Spousal or de facto maintenance.
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- Family Tax Benefit and other government payments.
A child support assessment does not determine where a child lives or how much time the child spends with either parent. Likewise, a parenting plan, parenting order or property settlement does not automatically replace a child support assessment.
If you also need advice about care arrangements, visit our Parenting Arrangements page. For the division of relationship property, see our Family Law Property Settlements page.
How is child support calculated?
Services Australia uses a statutory formula rather than assuming that one “custodial” parent receives support from the other.
In broad terms, the formula considers:
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- Each parent’s child support income.
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- The parents’ combined child support income.
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- Each parent’s percentage of that combined income.
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- The percentage of care provided by each parent.
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- The share of the child’s costs each parent meets through that care.
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- The number and ages of the children.
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- The estimated costs of the children under the statutory tables.
Services Australia then compares each parent’s income percentage with their cost percentage. This calculation determines who is assessed to pay and who is assessed to receive child support.
Shared or equal care does not necessarily result in no child support being payable. If the parents’ incomes differ, one parent may still be assessed to contribute financially despite both providing substantial care.
You can read the current Services Australia child support formula or use its estimator for an indicative calculation.
When can child support lawyers help?
Child support becomes more difficult when an assessment does not appear to reflect the family’s actual circumstances or the parents cannot agree on how particular expenses should be paid.
O’Dea Lawyers can provide advice concerning:
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- An initial or amended child support assessment.
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- Disagreement about the recorded percentage of care.
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- Income estimates and changes in employment.
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- Self-employment, companies, trusts or irregular income.
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- A parent’s financial resources or earning capacity.
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- Private school fees, health expenses and other additional costs.
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- Limited and binding child support agreements.
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- A change of assessment in special circumstances.
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- Objections to Services Australia decisions.
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- Administrative Review Tribunal proceedings.
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- Child support arrears and collection issues.
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- Court applications where the Court has jurisdiction.
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- Child support involving a parent or child living overseas.
The correct pathway depends on the decision involved, the orders or agreements already in place and whether an administrative process must be completed first.
Limited and binding child support agreements
Parents who agree about child support may be able to record their arrangement formally rather than relying solely on the administrative formula.
A properly prepared agreement can address periodic payments and particular non-cash expenses, such as school fees, health insurance or agreed medical costs.
There are two principal types of child support agreement.
Limited child support agreements
A limited child support agreement is a formal written agreement that must be signed by both parties and accepted by Services Australia.
Independent legal advice is not legally compulsory for a limited agreement. However, obtaining advice before signing can still be valuable because acceptance requirements, termination rights, payment arrangements and the agreement’s interaction with an administrative assessment can have significant consequences.
A limited agreement may suit parents who want greater certainty than an informal arrangement while retaining more flexibility than a binding agreement.
Services Australia provides further information about limited child support agreements.
Binding child support agreements
A binding child support agreement can provide a more tailored and longer-term arrangement. It may specify periodic payments and responsibility for agreed expenses.
Before entering a binding agreement, each party must obtain independent legal advice about:
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- The effect of the agreement.
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- The advantages and disadvantages of entering it.
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- Their rights and obligations under the proposed terms.
Both parties must receive their own independent advice. One lawyer cannot advise both parents about the agreement.
Binding agreements can be difficult to end or change unless the agreement itself provides an appropriate mechanism, both parties enter a termination agreement, or a Court sets it aside in circumstances permitted by law. Careful drafting is therefore essential.
Read the official information about binding child support agreements.
Informal arrangements can create uncertainty
Parents sometimes make verbal arrangements or exchange messages agreeing that one parent will pay school fees, rent, mortgage expenses or other costs instead of ordinary child support.
An informal arrangement may not have the legal effect either parent expects. Services Australia may not recognise every payment as child support, and disagreements can later arise about what was paid, what period it covered and whether arrears remain.
Before relying on an informal arrangement, obtain advice about whether it should be documented as:
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- A limited child support agreement.
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- A binding child support agreement.
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- A payment arrangement under an existing assessment.
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- Another form of legally recognised arrangement.
A child support agreement is also distinct from a parenting plan, consent orders and a binding financial agreement dealing with relationship property.
Private Collect or Child Support Collect?
Once Services Australia has made an assessment, accepted an agreement or registered an appropriate court order, payments may generally be handled through Private Collect or Child Support Collect.
Private Collect
Under Private Collect, parents arrange payments directly between themselves.
This can offer flexibility where communication is reliable and payments are made in full and on time. Both parents should keep clear records identifying the amount, date and period covered by every payment.
Private Collect may be unsuitable where:
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- Payments are already irregular.
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- Financial discussions cause ongoing conflict.
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- Income information is unreliable.
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- There is financial abuse, coercive control or family violence.
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- The receiving parent may need Services Australia’s collection assistance.
Private Collect can also affect Family Tax Benefit calculations. Services Australia explains these considerations on its Private Collect page.
Child Support Collect
Under Child Support Collect, Services Australia collects payments from the paying parent and transfers them to the receiving parent.
This option may assist where direct payment arrangements are unreliable or communication about money is difficult. Only the receiving parent can apply to change to Child Support Collect.
If Private Collect payments have fallen behind, act promptly. Time limits can affect how much Services Australia is able to recover retrospectively after the collection method changes.
Read more about Child Support Collect.
Changing a child support assessment
A change in employment, income or care does not always require a formal change-of-assessment application. Some changes should first be reported directly to Services Australia so it can determine whether the existing assessment should be updated.
A formal change of assessment may be available where special circumstances make the ordinary formula unfair. The applicant must establish at least one statutory reason and show that changing the assessment would be fair to the parents, the child and the community.
Depending on the circumstances, relevant issues may include:
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- Unusually high costs associated with a child’s special needs.
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- Agreed educational expenses.
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- Significant costs of maintaining contact with a child.
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- Income, property or financial resources not adequately reflected in the formula.
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- A parent’s earning capacity.
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- The financial effect of supporting another person.
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- Other special circumstances recognised by the legislation.
A change-of-assessment application requires relevant evidence, not merely disagreement with the amount produced by the formula.
Services Australia does not permit a representative to appear in place of a parent during its change-of-assessment process. A lawyer can nevertheless advise you beforehand, help identify the relevant statutory grounds, assist with organising evidence and review the material you intend to submit.
See the official guidance on changing an assessment in special circumstances.
Objecting to a child support decision
If you disagree with an objectionable Services Australia decision, you may need to lodge a formal objection.
Deadlines can be short. For many decisions, a person living in Australia has 28 days from receiving the decision letter to lodge an objection. Different rules can apply to care-percentage decisions, late applications and people living overseas.
An objection should identify the decision being challenged, explain why it is wrong and provide relevant supporting evidence.
Payments ordinarily continue while an objection is being considered. Lodging an objection does not itself suspend collection. In limited circumstances, a person may need legal advice about applying for a stay order.
If you disagree with an objection decision, an application may be available to the Administrative Review Tribunal. Most child support matters must proceed through the administrative review system before they can reach a Court.
A subsequent court appeal from an Administrative Review Tribunal child support decision is generally limited to a question of law. It is not an opportunity for the Court simply to reconsider the facts and decide which outcome it prefers.
Read the current Services Australia objection guidance.
Unpaid child support and arrears
Child support arrears should be addressed promptly.
Services Australia has statutory powers to recover overdue registered child support, including through:
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- Employer or bank-account deductions.
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- Deductions from tax refunds or certain government payments.
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- Working with third parties.
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- Litigation in appropriate cases.
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- Departure Prohibition Orders restricting overseas travel.
If you are owed child support, we can advise about the collection arrangement, available administrative steps and whether a court application is available or appropriate.
If you owe arrears, ignoring the debt can result in penalties and stronger recovery action. Early advice can help you check whether the amount is correct, identify any review rights and approach Services Australia about a manageable payment arrangement.
An assessment remains payable unless it is changed, ended or stayed through a legally recognised process.
Services Australia outlines its current child support recovery powers.
Our approach to child support matters
1. Identify the current legal position
We review the assessment, agreement, decision letter, collection arrangement and any related parenting or court documents.
2. Check deadlines and available pathways
We determine whether the issue requires notification of changed circumstances, an income estimate, change-of-assessment application, objection, agreement, tribunal review or court application.
3. Organise the evidence
We help identify the financial, care and expense records relevant to the particular legal test.
4. Prepare the appropriate documents
This may include drafting a child support agreement, assisting with submissions, preparing an objection or filing court or tribunal documents where permitted.
5. Help you implement the outcome
We explain the next steps, including registration, collection arrangements, payment records, ongoing reporting obligations and any future review rights.
Documents to bring to your consultation
Where available, please bring:
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Your latest child support assessment.
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Relevant Services Australia decision letters.
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Any existing child support agreement.
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Parenting plans, consent orders or parenting orders.
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A calendar or other record showing the care provided by each parent.
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Recent tax returns, payslips and income statements.
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Relevant company, partnership or trust records.
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Evidence of school, childcare, medical and extracurricular costs.
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Records of payments made or received.
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Correspondence concerning child support.
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Details of any current arrears or collection action.
Do not delay obtaining advice merely because some documents are unavailable. We can identify what additional information is likely to be required.
Frequently asked questions about child support
Does equal shared care mean that nobody pays child support?
Not necessarily. The child support formula considers both care and income. If the parents have different incomes, one parent may still be assessed to pay child support despite broadly equal care.
Can parents make their own child support arrangement?
Parents can agree about child support, but an informal arrangement may not have the same legal effect as an accepted limited or binding child support agreement.
Informal promises about school fees, mortgage payments or other expenses may later create disagreement about whether those payments counted as child support. The arrangement should be documented in the form appropriate to the parents’ circumstances.
Do I need a lawyer for a binding child support agreement?
Yes. Each party must receive independent legal advice before entering a binding child support agreement. One lawyer cannot advise both parents.
Is legal advice required for a limited child support agreement?
Independent legal advice is not compulsory for a limited child support agreement. However, advice can help you understand the acceptance requirements, termination provisions and interaction with an administrative assessment.
Can my assessment change if my income falls?
Possibly. The appropriate step may involve reporting a changed circumstance, lodging an income estimate or applying for a change of assessment.
The correct option depends on why the income changed, when it changed and the assessment period involved. Acting promptly is important because not every change can be applied retrospectively.
What if the other parent refuses to pay?
Where Services Australia is collecting the child support, it has statutory recovery powers.
If the parents are using Private Collect, the receiving parent should seek advice promptly. Time limits may affect how much unpaid child support Services Australia can retrospectively collect after changing the collection method.
Can a lawyer represent me during a Services Australia change-of-assessment process?
Services Australia does not allow a representative to appear in place of a parent during that process.
A lawyer can still advise you beforehand, help identify the relevant grounds, organise supporting evidence and assist with any later objection or review proceeding where representation is permitted.
Can I take a child support dispute directly to court?
Only certain child support applications can be commenced directly in court. Most assessment disputes must first proceed through Services Australia’s objection process and, where applicable, the Administrative Review Tribunal.
A court appeal from an ART child-support decision is ordinarily limited to a question of law rather than reconsideration of the factual merits.
Does paying child support give a parent the right to spend time with a child?
No. Child support and parenting arrangements are legally separate.
Concerns about where children live or the time they spend with each parent should be addressed through the parenting-law process rather than by withholding child support.
Does a property settlement replace child support?
No. A property settlement does not ordinarily end or replace child support. Any intended child support arrangement should be documented separately in a legally recognised form.
Can school fees and medical expenses be included?
School fees, health insurance, medical expenses and certain other costs may be addressed in a properly drafted child support agreement.
The agreement should clearly state who pays each expense and whether the payment is additional to, or credited against, periodic child support.
Speak with an Adelaide child support lawyer
Child support issues can become more difficult when deadlines pass, debts accumulate or informal arrangements are misunderstood.
O’Dea Lawyers can review your assessment, agreement or decision, explain the available options and help you take the appropriate next step.
Book a free, no-obligation initial consultation
This page provides general information only and is not legal advice. Child support outcomes depend on the applicable legislation and the circumstances of each family.