An affidavit is a written statement you sign under oath, telling your insurance company what happened in the accident
When you file a car accident claim, your insurance company needs to understand what occurred. An affidavit is a formal document where you describe the accident in your own words, swear that everything you've written is true, and sign it in front of a notary public or other authorized person. It becomes part of your claim file and may be used if there's a dispute about what happened.
You won't always need to provide an affidavit. Many straightforward claims — where both drivers agree on the basic facts and injuries are minor — move forward based on your initial claim statement, photos, and the police report. But if the other driver contests your account, if injuries are serious, or if your insurance company needs clarification on specific details, they may ask you to sign an affidavit. Some companies request one routinely as part of their standard process.
The affidavit serves as your sworn account of events. Because you're signing under oath, making false statements in an affidavit can expose you to perjury charges — a serious legal consequence. This is why insurance companies take affidavits seriously and why you need to be precise and honest in what you write.
Key Takeaways
- An affidavit is a sworn written statement about your accident; you sign it in front of a notary public and it becomes part of your insurance claim file.
- Your insurance company may request an affidavit if the other driver disputes your version of events, if injuries are significant, or as part of their standard claim procedures.
- You can write the affidavit yourself or work with your insurance adjuster to may support it covers the specific details the company needs.
- False statements in an affidavit can result in perjury charges, so accuracy and honesty are essential.
- A notary public (available at banks, UPS stores, and many government offices) witnesses your signature; this service usually costs $5 to $15.
When your insurance company will ask for an affidavit
Your insurer typically requests an affidavit when the claim involves a factual dispute. If you say the light was green and the other driver says it was red, or if you claim you were hit from behind and they claim you rear-ended them, an affidavit puts your account on record under oath. This strengthens your position if the claim goes to mediation or court later.
Serious injury claims often trigger an affidavit request as well. When medical bills are substantial or liability is unclear, insurance companies document your account formally. They may also ask for an affidavit if there were no police report, no independent witnesses, or conflicting witness statements — situations where your firsthand account becomes especially important.
Some insurers include an affidavit as routine procedure for all claims above a certain dollar amount. Others only request one when red flags appear. Your adjuster will tell you directly if one is needed; they'll either send you a form to complete or explain what information to include in a statement you prepare yourself.
What to include in your affidavit
Start with the basics: the date, time, and exact location of the accident. Include street names, nearby landmarks, or intersection details — anything that pins down where it happened. Describe the weather and road conditions (dry, wet, icy, foggy) because these affect how vehicles behave and how visible you were to other drivers.
Write out the sequence of events leading up to the collision. Where were you coming from? What was your speed? Were you changing lanes, turning, or going straight? What did you see the other vehicle doing? Be specific: "I was traveling north on Main Street at approximately 30 miles per hour" is stronger than "I was going a normal speed." Include what you heard or felt at the moment of impact.
Describe any injuries you sustained and any when ready medical care you received. If you sought treatment that day or within hours, say so. If you didn't feel pain until later, note that too — it's honest and credible. Mention any damage you observed to your vehicle, the other vehicle, or property.
Include details about the other driver: their name, license plate, vehicle description, and insurance information if you have it. If there were witnesses, provide their names and contact information. If you took photos or video, reference them in the affidavit ("I took photographs of the damage to both vehicles, which are attached as Exhibits A and B").
End by stating clearly: "I declare under penalty of perjury that the foregoing is true and correct." This language signals that you understand the legal weight of what you're signing.
How to get your affidavit notarized
After you've written or completed the affidavit, you need a notary public to witness your signature. A notary is an official authorized by your state to verify that you are who you say you are and that you're signing the document voluntarily and knowingly.
You can find a notary at banks (often free for account holders), UPS stores, FedEx locations, your local courthouse, or through online notary services. Some insurance adjusters can direct you to a notary or may even arrange one for you. The process takes about five minutes: you'll show a photo ID, read the affidavit aloud or confirm you've read it, answer a few questions about what you're signing, and then sign in front of the notary. They'll add their seal and signature, which authenticates the document.
Costs vary by location but typically range from $5 to $15 per signature. Some notaries charge more if you're requesting mobile notary service (they come to you). Once notarized, send the original affidavit to your insurance company — don't just email a photo or scan. Keep a copy for your records.
What happens after you submit your affidavit
Your insurance company will add the affidavit to your claim file and use it to evaluate liability and coverage. If your account aligns with other evidence (police report, witness statements, photos), it typically strengthens your claim. If there are inconsistencies — for example, your affidavit says you were hit from behind but the damage pattern suggests otherwise — the adjuster will note that and may request clarification.
In some cases, the other driver's insurance company will also receive your affidavit, especially if they're disputing liability. If the claim proceeds to mediation or small claims court, your affidavit becomes evidence that can be presented even if you're not physically present (though you may be asked to testify).
The affidavit doesn't automatically resolve your claim. It's one piece of the puzzle. The adjuster will weigh it alongside the police report, medical records, repair estimates, and any other documentation. But because it's sworn testimony, it carries significant weight — much more than a casual phone conversation with your adjuster.
Common mistakes to avoid in your affidavit
Don't exaggerate or add details you're not certain about. If you don't remember whether the other driver's light was red or yellow, say so. Vague memory is more credible than a confident false statement. Insurance companies and opposing counsel can often spot embellishment, and it undermines your entire account.
Don't contradict what you said in your initial claim statement. If you told your adjuster one thing on the phone and write something different in the affidavit, that inconsistency will be used against you. Review your original statement before you write the affidavit and make sure the details align.
Don't leave out information because you think it makes you look bad. If you were distracted, tired, or speeding, include it. Honesty about unfavorable facts is far more persuasive than omission, which looks like you're hiding something. Your adjuster already knows many details from the police report and other sources; leaving them out of your affidavit only creates suspicion.
Don't sign the affidavit without reading it carefully. Make sure every sentence is accurate and that nothing has been added or changed without your knowledge. If your insurance company provides a template or draft, review it word by word before you notarize it.
If you disagree with what your insurance company wants in the affidavit
Your insurance company may provide a form with specific questions or a template structure. You're not required to use their exact wording, but you do need to cover the information they've requested. If they ask about road conditions and you don't remember, say so rather than guessing.
If your adjuster suggests language that doesn't match your recollection, push back. You're the one signing under oath, not them. Politely tell your adjuster: "I want to make sure this is accurate. What I actually remember is..." and provide your version. A good adjuster will work with you to get the facts right.
If you feel pressured to sign something you don't agree with, you can refuse. You can also consult with an attorney before signing, especially if the claim is large or liability is genuinely disputed. An attorney can review the affidavit and advise you on what to include or exclude.
Frequently Asked Questions
Do I have to provide an affidavit if my insurance company asks for one?
Your insurance company can require an affidavit as a condition of processing your claim — it's part of your policy contract. If you refuse, they may deny your claim. However, you can consult an attorney before signing if you're uncertain about what to include or if the claim is complex.
Can I write the affidavit in my own words, or does it have to follow a specific format?
You can write it in your own words as long as it's clear, truthful, and covers the key facts: when, where, what happened, and who was involved. Your insurance company may provide a form or template, but a straightforward narrative statement that you sign under oath works just as well.
What if I remember something differently after I've already signed the affidavit?
Contact your insurance company when ready and provide a supplemental affidavit correcting or clarifying the earlier statement. Explain why your recollection changed. It's better to correct the record yourself than to have the discrepancy discovered later by the other party.
Can the other driver's insurance company use my affidavit against me?
Yes, if the claim is disputed, your affidavit may be shared with the other driver's insurer and could be used in mediation or court. This is another reason to be accurate and honest — anything you write can be scrutinized and challenged by the other side.
Do I need a lawyer to help me write my affidavit?
For straightforward claims, you don't need a lawyer. But if liability is contested, injuries are serious, or you're unsure what to include, consulting an attorney before you sign is a smart step. They can review your statement and make sure you're not inadvertently harming your claim.