How to Draft an Affidavit a Judge Will Actually Read
- •An affidavit is a sworn first-person statement of facts you personally observed — not a story, not an argument, not opinion. The court will only weigh what you saw, heard, or did directly.
- •Every event needs a date, a location, and (where any) a named witness. Vague claims like 'she's always late' get discounted; 'on April 12, 2026 at 5:15 PM in front of my mother' does not.
- •Affidavits without proper exhibit references, with hearsay, or with characterizations are routinely thrown out or discounted by Canadian family judges across all provinces.
What an affidavit is — and what it isn't
An affidavit is a sworn (or affirmed) statement of facts that a deponent — the person swearing it — observed directly. It's evidence the court considers without the deponent appearing in person. It is NOT a closing argument, NOT an opinion piece, NOT a retelling of what others told you, and NOT a place to vent.
The first-person observation rule
Courts only consider what YOU personally saw, heard, did, or experienced. This is the most important rule in affidavit drafting. Compare:
| Inadmissible (rewrite or remove) | Admissible (will be weighed) |
|---|---|
| She is a terrible mother to the kids. | On April 12, 2026 I observed the children arrive at my home wearing the same clothes they had left in 3 days earlier. |
| My mother told me Samantha was drunk at pickup. | On April 12, 2026 I observed Samantha's eyes were red and her speech was slurred during the 6:00 PM exchange. My mother [name] was present and witnessed the same. |
| She always withholds the kids from me. | Between January and April 2026, Samantha cancelled or refused to facilitate 7 of the 16 scheduled exchanges under our August 12, 2024 parenting order. A schedule of cancellations is attached as Exhibit A. |
Hearsay — what it is and why it kills affidavits
Hearsay is a statement made by someone else (out of court) that you're repeating to prove the truth of what they said. The rule against hearsay is one of the oldest in Canadian evidence law. Affidavits filled with 'my friend told me' or 'the school called and said' get discounted by family judges.
- BAD: 'My daughter told me her mother yelled at her.'
- BETTER: 'I observed bruising on my daughter's arm when I picked her up on April 12, 2026. A photo of the bruising is attached as Exhibit C.'
- BEST: Have the friend, school, or witness swear their own affidavit if their testimony matters.
How to properly mark exhibits
Exhibits are documents, photos, text screenshots, recordings, or any other evidence you want the court to consider. They must be referenced by letter (A, B, C...) in the order they're mentioned in your affidavit, attached to the affidavit, and stamped by the commissioner who swears you.
- In the affidavit body: write "A true copy of [description] is attached to this affidavit and marked as Exhibit A."
- Print the exhibit on its own page(s)
- Place a coversheet on the exhibit: "EXHIBIT A — referred to in the Affidavit of [your name] sworn on [date]" with a signature line for the commissioner
- Commissioner initials each exhibit at the time of swearing
- List all exhibits at the end of the affidavit in an "Exhibits referenced" block
The 10 most common mistakes
- Using emotional language ('shockingly', 'outrageous', 'horrible') — judges discount this
- Failing to date events ('a few months ago' is not a date)
- Reporting what others told you (hearsay) without their own affidavit
- Including legal argument ('this clearly shows...') — that goes in oral submissions, not affidavits
- Forgetting to attach mentioned exhibits — 'as set out below' with nothing attached
- Using inconsistent first-person voice (drifting into 'we' or 'my lawyer')
- Numbering paragraphs incorrectly or restarting numbering after exhibit references
- Failing to swear before a Commissioner of Oaths (or signing without the commissioner present)
- Filing the wrong form for your province (Form 14A in ON, Form F1 in BC, Form 49 in AB, Rule 60 affidavit in NB)
- Submitting an affidavit over the court's page limit without leave
Frequently asked
How long should my affidavit be?
Most family-court affidavits run 5-25 numbered paragraphs (1-8 pages). Some provinces have hard page limits without leave (Ontario, for example, restricts motion affidavits to 12 pages). Quality over volume — a tight 8-paragraph affidavit with 5 well-organized exhibits beats a 40-paragraph rant every time.
Can I swear an affidavit at a notary or do I need a lawyer?
A Commissioner for Oaths is sufficient — they don't need to be a lawyer. Notaries are also commissioners. Some banks, registry agents, and post offices have commissioners on staff. Check your province's directory. The commissioner must witness you sign and confirm your identity.
What happens if my affidavit has a mistake after I've sworn it?
You file a supplementary affidavit correcting the mistake. Do NOT alter the original. The supplementary should reference the original by date and clearly state what's being corrected. Both affidavits go before the court.