Affidavits in injury claims
In plain English: an affidavit is a written statement of facts that you sign under oath or affirmation, in front of someone authorised to witness it, such as a notary public, commissioner for oaths or solicitor. It carries the same weight as saying those words in court.
Where affidavits show up in accident claims
Most people never sign one during an ordinary insurance claim. They appear once paperwork has legal consequences. Common examples include:
- Court applications. Asking a judge to extend a deadline, approve a settlement for a child, or deal with a dispute before trial often requires sworn evidence.
- Proof of loss. Some US insurance policies ask for a sworn proof of loss before paying a first-party claim, particularly for property damage.
- Witness evidence. A witness who may be hard to reach later can give a sworn account while memories are fresh.
- Documents and records. Businesses sometimes provide an affidavit confirming that medical or employment records are genuine and complete.
How it differs from a witness statement
In England and Wales, most personal injury evidence is given in witness statements that end with a statement of truth rather than a sworn oath. Affidavits are kept for particular situations the court rules require. Signing a false statement of truth can still be contempt of court, so the practical difference for you is small: both must be accurate. In the US and Canada, sworn affidavits (and in the US, declarations signed under penalty of perjury) are more common in routine court filings.
What goes into one
- Your name, address and role in the case.
- Numbered paragraphs, each covering one fact.
- A clear line between what you saw yourself and what someone told you.
- Copies of any documents you refer to, attached as exhibits.
- The oath or affirmation, your signature and the witness's details.
Lawyers often draft affidavits from notes. If a date, distance or description is wrong, change it before signing, even if it seems minor. The other side will compare your affidavit with your medical records, police report and later testimony, and small contradictions get used to question everything else you say.
Consequences of getting it wrong
A deliberately false affidavit can amount to perjury and can sink a claim entirely. Honest mistakes are different, but they still need fixing quickly. If you realise something is wrong, tell your lawyer straight away so a corrected affidavit can be filed rather than letting the error sit on the record.
A pedestrian swears she was hit "at the crossing". CCTV later shows she was a few metres beyond it. The difference may not change who is at fault, but the insurer now argues she is unreliable. Writing "at or near the crossing, I believe within a few metres" would have been accurate and safer.
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General information, not legal or medical advice. Rules differ between US states, the UK and Canadian provinces, so check the law where your accident happened. How we write and check · Legal disclaimer