Form 12: Affidavit

Understanding Affidavits

An affidavit is a formal written statement of facts, the truth of which is solemnly sworn or affirmed by its author (the deponent). In Australian family law proceedings, it stands as the cornerstone of all evidence.

Your affidavit is not just a procedural document — it is the primary, and often exclusive, vehicle through which you present your evidence-in-chief to the court. It functions as your voice before the judge, carrying the same legal weight and solemnity as oral testimony given from the witness box in open court.

Why the stakes are high

• Perjury consequences: Providing false, misleading, or dishonest information constitutes perjury — a serious criminal offence that can result in imprisonment. Beyond criminal prosecution, dishonesty in your affidavit has catastrophic strategic consequences.
• Credibility is everything: Family law matters turn on credibility. If the judge finds you've been dishonest about one fact, they may disregard your entire evidence. Your affidavit is a front-loaded credibility test — every statement you make will be scrutinised and potentially challenged through cross-examination.
• Strategic imperative: A well-drafted affidavit grounded in specific facts demonstrates reasonableness and trustworthiness. A vague, exaggerated, or emotional affidavit undermines your case before the hearing even begins.

The legal framework

Understanding the multi-layered legislative framework helps you navigate compliance requirements and draft evidence that will be accepted and considered by the court.

• Family Law Act 1975 (Cth): Section 98 empowers the court to make rules for evidence by affidavit. Contains substantive provisions on best interests of children (Part VII) and family violence identification.
• Evidence Act 1995 (Cth): Governs admissibility — relevance, hearsay rules and exceptions, opinion evidence, privilege. Your affidavit content must comply to be considered.
• Federal Circuit and Family Court of Australia (Family Law) Rules 2021: Your practical guide. Mandatory requirements include Rule 2.14 (format), Rule 5.08 (limits), Part 8.3 (Rules 8.13–8.21 on affidavit preparation).
• Central Practice Direction: Reinforces strict limits on affidavit length and annexures for interim proceedings.

When to File Your Affidavit

You file an affidavit at each stage of proceedings — an initiating affidavit, a responding affidavit, an affidavit in reply, and a consolidated trial affidavit for the final hearing. Understanding the different types of affidavits and their timing helps ensure your evidence is properly presented at each stage of proceedings.

Types of affidavits in family law proceedings

Initiating affidavit. Filed with your Initiating Application (Form 4) to commence proceedings. This affidavit sets out all the facts you rely on to support the specific orders you're seeking. It must comprehensively address the relevant legal framework (s60CC for parenting, four-step process for property).

Responding affidavit. Filed with your Response to Initiating Application (Form 13) within 28 days. This affidavit addresses the applicant's allegations and presents your own factual account. Don't just deny allegations — provide specific factual rebuttals with dates, context, and corroborating evidence.

Affidavit in reply. Filed after receiving the respondent's affidavit, addressing new factual matters raised in their response. This is not an opportunity to repeat your initiating affidavit — only respond to genuinely new issues that require clarification or rebuttal.

Consolidated trial affidavit. For final hearings, the court typically directs parties to file a single consolidated affidavit that consolidates all evidence from previously filed affidavits you wish to rely upon at trial. This supersedes all earlier affidavits and is your opportunity to present a streamlined, chronological narrative without the page limits of interim affidavits.

Division 1 vs Division 2 page limits

For interim hearings, the Federal Circuit and Family Court of Australia imposes strict mandatory limits on affidavit length and annexures. These limits differ depending on which Division of the court is hearing your matter.

Step-by-Step Drafting Guide

Follow these steps carefully to ensure your affidavit is properly formatted, executed, and filed.

Step 1 — Complete title block and deponent details

The first page must begin with a clear heading stating the court file number, the full name of the party on whose behalf the affidavit is filed, and the full name of the deponent. For example:

File Number: SYD 1234 of 2025
Applicant: Jane Elizabeth Smith
Respondent: John Michael Smith

AFFIDAVIT OF JANE ELIZABETH SMITH
Deponent: Jane Elizabeth Smith
Occupation: Registered Nurse
Address: [Full residential address]

Safety exception: If disclosing your address could compromise your safety (particularly in matters involving family violence), you may note "Address not disclosed for safety reasons" and provide a contact method through your lawyer or the court instead.

Formatting requirements: Use at least 12-point font (Times New Roman or equivalent), 1.5 line spacing, approximately 2.5cm margins on all sides, printed on one side only of white A4 paper, with all pages consecutively numbered.

Step 2 — Structure your opening paragraph

Begin with the formal opening statement that establishes your sworn evidence. Use the prescribed formula:

"I, Jane Elizabeth Smith, of [address], Registered Nurse, say on oath:"

Or if making an affirmation instead of swearing an oath:

"I, Jane Elizabeth Smith, of [address], Registered Nurse, affirm:"

This opening immediately signals to the court that what follows is sworn testimony carrying the full legal weight of evidence given from the witness box.

Step 3 — Draft numbered factual paragraphs

The body of your affidavit must be structured into consecutively numbered paragraphs. Each paragraph should, as far as possible, be confined to a single, distinct fact, topic, or event. This discipline creates clarity and makes cross-examination more difficult.

Strategic principles for paragraph construction:

• Facts, not opinions: "On 15 June 2024, I observed a final demand notice from XYZ Energy on the kitchen bench for $1,200 in arrears" — not "The other parent is financially irresponsible."
• Specific dates and times: Precision enhances credibility and allows corroboration.
• Direct observations: What you personally saw, heard, or did — not what someone told you (hearsay).
• Chronological structure: Present events in the order they occurred for logical flow.
• Objective tone: Factual, measured language — avoid inflammatory or emotional terms.

Step 4 — Apply strategic headings

Use descriptive headings to group related paragraphs into thematic sections. This enhances clarity and assists the judicial officer in navigating your evidence, particularly in lengthy affidavits.

Effective headings for parenting matters include: Background of Relationship, Parenting History and Roles, Child's Current Circumstances, Evidence of Risk of Harm, Communication Difficulties, and Proposed Parenting Arrangements.

Effective headings for property matters include: Relationship Timeline, Assets and Liabilities, Financial Contributions, Non-Financial Contributions, Homemaker and Parenting Role, and Current Financial Circumstances.

Step 5 — Attach and certify annexures

Documentary evidence that supports your statements must be attached as annexures. The rules for doing so are strict and serve as a critical gatekeeper for admissibility. Improperly certified annexures can be excluded from evidence.

Three mandatory requirements for annexures:

1. Identification in affidavit text. When referring to a document in your affidavit paragraph, clearly identify it and state which annexure letter it corresponds to: "Annexed and marked with the letter 'A' is a copy of the email I received from the Respondent on 15 June 2024."
2. Consecutive pagination. All pages of all annexures must be paginated consecutively. Start with page 1 on the first page of Annexure A and continue sequentially through to the last page of your final annexure.
3. Certification statement. Each annexure must have a certification statement signed by the same authorised witness who witnessed your affidavit: "This is the document referred to as Annexure A in the affidavit of Jane Elizabeth Smith sworn at Sydney on 20 January 2025 before me — [Witness signature, name, and qualification]."

Step 6 — Execute the swearing or affirmation ceremony

The formal execution of your affidavit is a critical ceremony that gives the document its legal force as sworn evidence.

Swearing an oath (religious): A religious promise to tell the truth, traditionally made while holding a sacred text (such as a Bible, Quran, or Torah): "I swear by Almighty God that the contents of this my affidavit are true and correct."

Making an affirmation (non-religious): A solemn, non-religious declaration that the contents are true. No sacred text required: "I solemnly and sincerely affirm that the contents of this my affidavit are true and correct."

Persons authorised to witness affidavits in Australia include Justices of the Peace (JPs), practising lawyers, and notaries public. JPs are often available at courts, local government offices, or police stations at no cost.

Critical execution requirements:

• Deponent must have read and fully understood the affidavit's contents before signing.
• Deponent must sign the bottom of every single page.
• Signing must occur in the physical presence of the authorised witness.
• Any alterations or corrections must be initialled by both deponent and witness in the margin.

Step 7 — Complete the jurat

The final page of your affidavit must contain a specific concluding statement known as the 'jurat'. This section is completed by the authorised witness and serves as the official record of the execution ceremony. The jurat must include:

• Deponent's full name and signature.
• Statement of whether the affidavit was sworn or affirmed.
• Precise date and place (city or town) where it was executed.
• Witness's full name, qualification, and signature.

Example (sworn): "Sworn at Sydney on 20 January 2025 before me: [Deponent's signature] Jane Elizabeth Smith — [Witness signature] John Robert Williams, Justice of the Peace, Registration No: 123456."

Step 8 — File electronically and serve

File the completed affidavit and all annexures electronically via the Commonwealth Courts Portal. You'll need your court file number and matter details to link your filing to the correct proceeding.

After filing, a copy of the filed affidavit and all annexures must be formally served on every other party to the proceedings, including the Independent Children's Lawyer (ICL) if appointed. The Family Law Rules are clear that any document annexed to an affidavit must be served along with the affidavit itself — this ensures all parties have access to the complete evidentiary record.

Critical Mistakes to Avoid

Understanding what to exclude from your affidavit is as important as what to include. These common errors can lead to evidence being struck out, adverse costs orders, and catastrophic loss of credibility.

Opinion instead of facts

Your affidavit must contain evidence of facts, not your opinions, beliefs, or legal arguments. You are presenting what you directly saw, heard, or did — not your conclusions about what it means. "The other parent is financially irresponsible and cannot be trusted to manage money for our child's benefit" is a conclusion, not a fact — it will be struck out as inadmissible opinion evidence.

Instead, provide specific, observable facts with documentary corroboration: "On 15 May 2024, I observed a final demand notice from XYZ Energy on the kitchen bench. The notice stated the account was $1,200 in arrears. On 22 May 2024, our electricity was disconnected. On 25 May 2024, the Respondent purchased a new gaming console for $800." The judge draws their own inference.

Exception: Qualified experts (psychologists, valuers, accountants) are permitted to provide opinion evidence within their area of specialised knowledge.

Including inadmissible hearsay

Hearsay — evidence of what someone else told you — is generally inadmissible unless an exception applies. The most important exception in family law is section 69ZT of the Family Law Act 1975 (statements by children about matters affecting their welfare). Under section 69ZT, you can include what your child told you about their experiences with the other parent, as this goes to the child's welfare. However, you must note the context, exact words (as far as possible), and the child's age and maturity.

Emotional language and characterisation

Inflammatory language, insults, and emotional outbursts undermine your credibility. The court wants dispassionate facts, not character attacks. Words like "narcissist," "abusive," "toxic," or "monster" should never appear in your affidavit. Describe specific behaviour factually and let the judge draw conclusions about character from the evidence you present.

Expert Insights

Beyond procedural compliance and evidentiary rules lies the strategic intelligence that separates adequate affidavits from persuasive ones.

Credibility is currency

Family law matters fundamentally turn on credibility. When evidence conflicts, the judicial officer's determination of who is more believable often determines the outcome. Your affidavit is a front-loaded credibility test — every statement will be scrutinised.

• "Show, don't tell": Provide the specific factual building blocks that allow the judge to reach conclusions, rather than stating conclusions directly.
• Ruthless honesty: Be scrupulously honest, factually accurate, and specific with dates and details. Don't guess, speculate, or exaggerate.
• Authentic voice: Write in your own language, not legalese. If cross-examined and unable to explain a complex legal phrase, your credibility is fatally damaged.

The M v M "unacceptable risk" test

The landmark High Court decision in M v M (1988) 166 CLR 69 established the foundational test for cases involving allegations of risk to children. Understanding this principle is essential for drafting affidavits in matters involving family violence, child abuse, or safety concerns.

The court's paramount duty is protecting the best interests of the child. When faced with allegations of abuse or risk, the determinative question is NOT whether the court can find, as a fact, that abuse occurred in the past. Instead, the court must undertake a forward-looking assessment: does the evidence establish an "unacceptable risk" of harm to the child if a parenting order for time with that parent were made?

Evidentiary triage: strategic curation

The tight 10-page limit in Division 2 for interim hearings transforms affidavit drafting from simple recitation to strategic curation. You cannot include every detail — you must make tactical decisions about which facts most powerfully support your interim orders.

1. Identify the core legal test. For parenting: s60CC best interests factors (especially risk of harm, parental capacity, child's views). For property: contributions and future needs.
2. Rank evidence by impact. Recent, specific, documented incidents outweigh vague historical grievances. Evidence of immediate risk, significant financial wrongdoing, or child's distress takes priority.
3. Ruthlessly cut irrelevant context. Background that doesn't directly support the interim orders must be sacrificed. Save comprehensive history for the consolidated trial affidavit.

Evidence Requirements

Effective affidavits are strategically structured to provide evidence that directly addresses the specific legal tests the court must apply.

Parenting matters: section 60CC best interests framework

In parenting disputes, the court's sole focus is determining what is in the child's best interests under Section 60CC of the Family Law Act 1975.

Primary consideration 1 — benefit of meaningful relationship: Evidence about the child's existing relationship with each parent and its importance to the child's development. For example: "Since separation on 10 August 2024, I have been Olivia's primary carer. I prepare her meals, assist with homework, attend all school events, and coordinate her medical appointments."

Primary consideration 2 — risk of harm: Evidence of family violence, abuse, neglect, or other conduct that could expose the child to physical or psychological harm. For example: "On 3 September 2024 at approximately 8:00pm, I observed the Respondent grab Olivia by her left arm and shake her while shouting. Olivia was crying and saying 'You're hurting me.'"

Property matters: four-step analytical process

The court follows a well-established four-step process in property settlement matters. Structure your affidavit to provide factual and documentary evidence at each stage.

1. Identify and value the asset pool. Comprehensive evidence of all assets, liabilities, and superannuation interests held jointly or individually.
2. Assess contributions. Detailed evidence of financial and non-financial contributions throughout the relationship.
3. Consider future needs. Section 75(2) factors affecting earning capacity and financial resources.
4. Just and equitable outcome. Factual basis explaining why your proposed division is fair in all circumstances.

What Happens Next

After filing, your affidavit is served on all parties, scrutinised by the other party, reviewed by the judicial officer before the hearing, tested through cross-examination at trial, and weighed in the final judicial determination. Understanding what happens after you file your affidavit helps you appreciate why procedural compliance and strategic content choices matter so much.

1. Filing and service. After you file via Commonwealth Courts Portal, you must serve a copy on all parties (including ICL if appointed). For initiating affidavits filed with Form 4, service must occur within the timeframes specified in the court's directions.
2. Opponent's review and response. The other party (and their lawyer, if represented) will scrutinise your affidavit for inconsistencies, admissibility issues, and factual disputes. If your affidavit contains inadmissible or objectionable material, they may file a Rule 8.18 application to strike it out.
3. Judicial officer's pre-hearing review. Before the hearing, the judge or registrar reads all filed affidavits. They identify key factual disputes, assess evidence quality, and consider preliminary views on credibility.
4. Cross-examination at trial. At a final hearing, you may be cross-examined on your affidavit by the other party's lawyer. Every statement you've made can be challenged and tested against documentary evidence.
5. Judicial determination. After considering all affidavit evidence, hearing oral testimony, and weighing credibility, the judicial officer makes findings of fact and applies the relevant legal tests to make final orders.

Common Questions