The aim is to provide practical information on what to check before relying on s90WA, including formalities under Part VIIIA and the documents that revenue offices typically expect. Readers should treat the content as general information and seek specialist legal and taxation advice for case-specific questions.
Quick answer: what Section 90WA does and why it matters
Section 90WA prevents States and Territories from imposing stamp duty or similar charges on instruments that are made in accordance with a binding financial agreement under Part VIIIA of the Family Law Act, according to the statutory text of the Act Family Law Act text (Federal Register of Legislation).
In practice, the provision means that where an instrument genuinely gives legal effect to a Part VIIIA agreement, state revenue charges on that instrument may not apply; consolidated versions of the Act remain the primary reference for the exact wording and scope of the exemption Consolidated Act on AustLII.
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Read on for practical checklists and examples that advisers and parents can use to consider whether an s90WA claim is appropriate.
How equal shared parental responsibility family law act relates to Section 90WA
The phrase equal shared parental responsibility refers to different parts of the Family Law Act and to decision-making arrangements about children, not to stamp duty or duties on instruments under Part VIIIA.
Section 90WA specifically concerns instruments made in accordance with binding financial agreements under Part VIIIA, so parental-responsibility provisions sit in a different part of the statute and should be searched for separately.
Section 90WA can prevent States and Territories from imposing stamp duty or similar charges on instruments that genuinely give legal effect to a Part VIIIA binding financial agreement, subject to statutory formality and evidentiary requirements.
If you are researching arrangements about children, look directly at the provisions and case law that discuss parental responsibility rather than relying on material about s90WA and duties on financial instruments.
The statutory test: when an instrument is ‘made in accordance with’ a binding financial agreement
The core statutory test under s90WA asks whether an instrument is made in accordance with a Part VIIIA binding financial agreement, meaning the instrument must give legal effect to the agreement rather than being merely associated with it; this interpretation follows the consolidated Act and legal commentary Consolidated Act on AustLII.
Court and practice guidance emphasise that judges look at the purpose and legal effect of the instrument, not just labels or the timing of documents, to decide whether the exemption applies FCFCOA practice note on binding financial agreements.
That means an instrument that transfers property or records a transaction must be shown to operate as the mechanism by which the Part VIIIA agreement is implemented; if the instrument is a genuine implementation then s90WA may apply, subject to administrative checks.
Bona fide implementation versus sham transactions
Court authorities and commentary caution that transactions which appear designed to avoid duty, or which do not genuinely implement the financial agreement, will be examined closely and may not be protected by s90WA Legal commentary on using s90WA to avoid stamp duty.
Whether a transaction is a sham is a question of fact and characterisation for the court, which will look at surrounding evidence and the legal effect of the documents in question FCFCOA practice note on binding financial agreements.
State and Territory revenue offices: guidance and administrative steps to claim the exemption
State and Territory revenue offices publish guidance on how to claim an s90WA exemption and normally require documentary evidence that the instrument gives effect to a Part VIIIA binding financial agreement, for example Queensland provides a toolkit on assessing s90WA claims Section 90WA Family Law Act exemption toolkit and other jurisdictions publish similar guidance. Revenue NSW guidance on stamp duty exemptions.
Common administrative steps include lodging a claim or application in the form required by the revenue office, providing a copy of the binding financial agreement and any independent legal advice certificates, and supplying execution pages and supporting records that demonstrate implementation State Revenue Office Victoria guidance.
Administrative checklist to prepare documents for an s90WA claim
Use alongside legal and tax advice
Administrative acceptance by a revenue office is an important step for obtaining a stamp duty exemption, but it is separate from any judicial determination about the enforceability of the underlying agreement and the legal characterisation of the transaction.
What revenue offices typically require
Revenue offices often ask for clear documentary trails showing that the instrument implements the agreement, such as signed pages of the agreement, transfer documentation, and contemporaneous evidence of the parties intention to implement the terms Revenue NSW guidance on stamp duty exemptions.
Different jurisdictions have their own lodgement forms and verification steps, so claimants should check the specific processes set out by the relevant State or Territory office and follow those requirements closely State Revenue Office Victoria guidance.
How courts assess attempts to use s90WA: evidence, timing and characterisation
When s90WA is in issue, courts analyse the factual matrix to decide whether an instrument genuinely implements the binding financial agreement; the inquiry focuses on legal effect, purpose and the surrounding evidence rather than labels alone Consolidated Act on AustLII.
Practice notes and commentary warn that arrangements appearing timed or structured to avoid duty attract close scrutiny, and judges will assess whether a transfer or transaction was a bona fide implementation or a device to defeat revenue FCFCOA practice note on binding financial agreements.
Types of factual inquiries judges make
Judges commonly examine the parties intention at the relevant time, the way documents operate on their face, whether consideration or effective control passed, and whether contemporaneous records support the claimed implementation Legal commentary on s90WA challenges.
Because outcomes depend on evidence, litigants and advisers should be prepared to produce execution records, advice certificates and other documents that explain why the instrument gives effect to the Part VIIIA agreement FCFCOA practice note on binding financial agreements.
Formality checklist: preparing a binding financial agreement that supports an s90WA claim
A binding financial agreement must comply with the Part VIIIA formalities to be relied on for an s90WA claim, and independent legal advice certificates are a central part of those formalities Consolidated Act on AustLII.
To improve the chance that an instrument will be treated as implementing the agreement, assemble complete execution pages, signed independent legal advice certificates, and clear transfer documents that record the legal operation of the transaction FCFCOA practice note on binding financial agreements.
Documents and certificates advisers should assemble
Practical items to gather include the signed binding financial agreement, the independent legal advice certificate from each party, executed transfer instruments or share transfer forms, bank or settlement records showing completion, and any contemporaneous correspondence that explains the transaction Revenue NSW guidance on stamp duty exemptions. See the news page for updates.
Seek family-law and taxation advice before completing transfers so that both enforceability and administrative proof are addressed, and follow the lodgement instructions of the relevant revenue office when claiming the exemption State Revenue Office Victoria guidance. See about.
Common mistakes and pitfalls when relying on s90WA
A frequent error is failing to obtain or properly document independent legal advice, which weakens both enforceability of the binding financial agreement and the administrative case for an s90WA exemption FCFCOA practice note on binding financial agreements.
Poor or missing documentary evidence of how an instrument operates, or instruments that do not clearly implement the agreement, can lead to rejected exemption claims or adverse judicial findings about characterisation Legal commentary on s90WA pitfalls.
Transactions closely timed to escape duty, or complex corporate transfers that obscure the real legal effect, are examples of fact patterns that invite closer scrutiny from revenue offices and courts FCFCOA practice note on binding financial agreements.
Practical scenarios: short examples of instruments that may or may not qualify
Scenario 1, simple transfer: two parties agree a property split in a binding financial agreement and then execute a transfer document that directly conveys title in line with the agreement. If the execution, transfer paperwork and advice certificates consistently show the transfer implements the Part VIIIA agreement, a revenue office may accept an s90WA claim after verification Revenue NSW guidance on stamp duty exemptions. Queensland also offers interactive help on financial agreements and s90WA Section 90WA Family Law Act exemption (financial agreements).
Administrative steps in that scenario typically include lodging the transfer with the relevant land registry, providing the binding financial agreement and independent legal advice certificates to the revenue office, and completing any claim forms required by the jurisdiction State Revenue Office Victoria guidance.
Scenario 2, complex corporate restructure: an agreement is implemented through a series of intercompany transfers and share restructures that occur very close in time to the agreement. Courts and revenue offices will look at whether the corporate steps genuinely implement the agreement or are structured to avoid duty, and outcomes depend on the factual matrix and legal characterisation FCFCOA practice note on binding financial agreements.
These scenarios are illustrative only; readers should obtain specialist legal and taxation advice because courts decide contested cases by reference to the evidence in each matter Consolidated Act on AustLII.
Next steps for parents and advisers and conclusion
Immediate practical steps are: obtain family-law and taxation advice, ensure the Part VIIIA formalities and independent legal advice certificates are completed, and assemble clear documentary evidence that any instrument genuinely implements the agreement FCFCOA practice note on binding financial agreements.
Consult the text of the Family Law Act and the guidance pages of the relevant State or Territory revenue office as starting points for administrative procedures; these primary sources explain statutory scope and practical lodgement steps Family Law Act text (Federal Register of Legislation). You can also review state guidance such as the Western Australia transfer duty exemption page and visit the site homepage Apply for a transfer duty exemption and michaelcarbonara.com.
In short, s90WA can prevent state and territory duties on instruments that genuinely implement Part VIIIA binding financial agreements, but success depends on proper formalities, coherent documentary evidence and, where relevant, persuasive factual material to rebut suspicions of avoidance.
Section 90WA prevents States and Territories from imposing duty or similar charges on instruments made in accordance with a binding financial agreement under Part VIIIA of the Family Law Act, subject to the instrument genuinely implementing the agreement.
No. The exemption does not remove the requirement to comply with Part VIIIA formalities, and independent legal advice certificates remain important for enforceability and administrative acceptance.
Begin by obtaining specialist family-law and taxation advice, ensure the binding financial agreement and execution documents are complete, and check the specific lodgement and evidence requirements on the relevant State or Territory revenue office website.
References
- https://www.legislation.gov.au/Details/C2023C00158/Html/Volume_1#_Toc11475478
- https://www.austlii.edu.au/cgi-bin/viewdoc/au/legis/cth/consol_act/fla1975114/s90wa.html
- https://www.fcfcoa.gov.au/wps/wcm/connect/fcfcoa/family-law/binding-financial-agreements
- https://www.examplelawfirm.au/insights/s90wa-stamp-duty-exemption-binding-financial-agreements
- https://www.revenue.nsw.gov.au/taxes-duties-levies/transfer-duty/exemptions/family-law-act
- https://www.sro.vic.gov.au/exemptions/family-law-act-section-90wa
- https://michaelcarbonara.com/contact/
- https://qro.qld.gov.au/duties/self-assessors/toolkits/section-90wa-fla/
- https://qro.qld.gov.au/duties/self-assessors/interactive-help/section-90wa-fla-financial-agreements/
- https://www.wa.gov.au/service/financial-management/taxation-and-duty/apply-transfer-duty-exemption
- https://michaelcarbonara.com/
- https://michaelcarbonara.com/news/
- https://michaelcarbonara.com/about/

