Understanding affidavits in Australia
An affidavit is a written statement of facts confirmed by oath or affirmation in front of an authorised witness. Courts rely on affidavits because they are sworn evidence. Getting the structure, facts and exhibits right is essential — errors can see your affidavit rejected or given less weight.
Quick answers:
- Use cases: family law, civil claims, criminal procedure, debt recovery, small claims, injunctions and more.
- Witnesses: typically a JP, lawyer/solicitor, barrister, Notary Public or court registrar (varies by state/territory).
- Timing: simple affidavits can be prepared in 1–3 days; urgent same‑day options are often available.
- Cost: JP witnessing is usually free; lawyer review from $150–$450; drafting ranges by complexity.
Important: Court rules differ by jurisdiction. This page provides general information only and is not legal advice.
How to make an affidavit (step‑by‑step)
Practical steps
- Plan the purpose: identify what issue the court needs evidence on.
- Draft clearly: use numbered paragraphs; one fact per paragraph; stick to what you saw, did or know.
- Add exhibits: label each exhibit (e.g. “A”, “B”) and prepare exhibit pages for the witness to sign.
- Check the form: ensure the correct court heading, party names, matter number and required jurat wording.
- Arrange witnessing: take photo ID and unsigned pages to a JP/lawyer/notary; sign in their presence.
- File and serve: lodge with the court (online or in person) and serve the other party by the deadline.
DIY vs lawyer — which suits you?
- DIY suits short, factual matters with simple exhibits.
- Lawyer review helps refine relevance, structure and compliance before witnessing.
- Lawyer drafting is best for sensitive facts, urgent hearings, cross‑examination risk and complex exhibits.
Witnessing rules by state and territory
Authorised witnesses vary slightly across Australia. The categories below are commonly accepted — always check your court’s current practice directions.
| State/Territory | Common authorised witnesses |
|---|---|
| NSW | Justice of the Peace (JP), Australian lawyer (solicitor/barrister), Notary Public, court registrar |
| VIC | Justice of the Peace, Australian legal practitioner, public notary, certain court or police officers under Oaths and Affirmations Act |
| QLD | JP (Qual), Commissioner for Declarations, Australian lawyer, Notary Public |
| WA | Justice of the Peace, Australian lawyer, Notary Public, court registrar |
| SA | Justice of the Peace, Australian lawyer, Notary Public, court officer authorised by rules |
| TAS | Commissioner for Declarations, Justice of the Peace, Australian lawyer, Notary Public |
| ACT | Justice of the Peace, Australian lawyer, Notary Public, court officer authorised by rules |
| NT | Justice of the Peace, Commissioner for Oaths, Australian lawyer, Notary Public |
Affidavit costs, timing and filing
Typical costs (guide)
- JP witnessing: usually free
- Lawyer review: $150–$450
- Drafting (simple, 3–8 pages): $350–$900
- Drafting (complex with exhibits): $900–$2,500+
- Notary Public: $80–$180 per seal
- Urgent same‑day: often +10–30%
Filing fees: often there is no separate fee for the affidavit itself — it forms part of your application or response. Check your court’s schedule.
Timing and delivery
- Turnaround: 1–3 business days for straightforward matters; complex cases vary.
- Deadlines: courts impose strict filing/serving dates ahead of hearings.
- eFiling: many courts accept PDFs; some still require originals. Confirm the latest practice notes.
What to include and how to format exhibits
The court needs concise, relevant facts supported by properly marked exhibits. Clarity and compliance increase the weight of your evidence.
- Heading: correct court, registry, file number, party names and title (e.g. “Affidavit of [Name]”)
- Your details: full name, address, occupation and capacity (e.g. applicant, respondent, witness)
- Numbered paragraphs: one fact per paragraph; avoid argument or opinion
- Dates and sources: be specific and attach documents where appropriate
- Exhibits: label A, B, C… with an exhibit cover sheet; witness signs each exhibit cover
- Jurat: correct oath/affirmation wording, place and date, signed in front of the authorised witness
Common affidavit mistakes to avoid
Frequent issues
- Including argument or speculation rather than facts
- Leaving out key dates, names or source documents
- Incorrect or missing exhibit labels/cover sheets
- Using the wrong witness category for your state
- Not numbering paragraphs or pages
- Missing the filing or service deadline
How to prevent them
- Draft to the issues the court must decide
- Attach exhibits for any important assertion
- Use the court’s template headings and jurat
- Book a JP/lawyer early; take photo ID and unsigned pages
- Get a short legal review before you witness
Where affidavits are used and what happens next
| Context | What usually happens |
|---|---|
| Family law | Affidavits support interim or final orders with timeline, parenting or financial facts; exhibits often include emails, photos, bank records. |
| Civil claims | Affidavits prove service, debt, contract performance or loss; may be required for summary judgment or injunctions. |
| Criminal procedure | Used less commonly by accused, but appear in bail applications and some interlocutory steps; check local rules. |
| Tribunals/small claims | Simpler format; rules still require authorised witnessing and proper exhibits. |
When to get an affidavit lawyer involved
- Hearings are soon and deadlines are tight
- Facts are sensitive or may be challenged in cross‑examination
- You need to limit what the other side can object to
- Multiple exhibits and technical annexures are required
- You’re unsure about the correct witness or jurat wording
Affidavit FAQ
What is an affidavit in Australia?
An affidavit is a written statement of facts that you swear or affirm to be true in front of an authorised witness. Courts use it as evidence when deciding applications and hearings.
Who can witness an affidavit?
Common witnesses include a JP, Australian lawyer (solicitor/barrister), Notary Public and court registrars. Some jurisdictions also allow Commissioners for Declarations/Oaths and certain police officers. Check your court’s current rules.
What’s the difference between an affidavit and a statutory declaration?
Affidavits are sworn/affirmed for use in court matters and have stricter formatting with exhibits. Statutory declarations are typically for non‑court purposes.
How much does an affidavit cost?
JP witnessing is usually free. Lawyer review typically costs $150–$450. Drafting may range from $350–$900 (simple) to $900–$2,500+ (complex). Notary fees are commonly $80–$180 per seal.
Can I file an affidavit online?
Many courts accept eFiling or emailed PDFs if they meet the form rules. Some require originals. Confirm the latest instructions for your court and registry.
Need help with an affidavit in Australia?
Use the form below to get free guidance on witnesses, formatting and next steps — or request a fixed‑fee review or drafting quote.