A demand letter is your formal settlement request to the at-fault driver’s insurer — it lays out the facts, your injuries, your losses, and a specific dollar demand (FindLaw, 2026). Done well, it signals you’re serious and ready to file a lawsuit if needed.
Key Takeaways
- Send the demand letter only after reaching maximum medical improvement.
- Include the facts, fault, injuries, itemized damages, and a specific demand.
- Ask for slightly more than you expect, to leave room to negotiate.
- Give a 30-day deadline and send it by certified mail.
When Should You Send a Demand Letter?
Send it only after you’ve reached maximum medical improvement — the point where your doctor confirms your recovery is stable (AllLaw/Nolo, 2026). Sending too early risks underestimating your total costs, and once you settle, you can’t reopen the claim.
What Should a Demand Letter Include?
A strong demand letter has a clear structure. Include each of these sections:
- Claim details — the insurer’s file/claim number, date, and parties
- Statement of facts — how the crash happened, backed by the police report
- Statement of fault — why the other driver was negligent (cite any citation)
- Injuries and treatment — detailed, using proper medical terms
- Itemized damages — medical bills, lost wages, property damage
- Pain and suffering — how the injuries affected your daily life
- A specific demand — the dollar amount you’ll accept
- A deadline — typically 30 days to respond
How Much Should You Demand?
Ask for more than you think the claim is worth — but don’t exaggerate wildly. A reasonable cushion gives you room to negotiate down to a fair figure when the adjuster counteroffers. Inflated, unsupported numbers hurt your credibility, so back every dollar with documentation.
What Documents Should You Attach?
Attach proof for every claim you make: medical bills and records, repair estimates, pay stubs showing lost income, the police report, and photos of the damage and injuries. Send the letter by certified mail so you have confirmation it was delivered.
Not sure what your demand should be? A free attorney review can help you value your claim.
What Common Mistakes Weaken a Demand Letter?
A demand letter is your case on paper, so avoidable errors can cost you leverage. The most frequent mistakes make a claim look unprepared or exaggerated, which invites a lowball response:
- Demanding a figure with no supporting documentation.
- Leaving out lost wages or future medical costs.
- Being emotional or threatening instead of factual.
- Understating your injuries or accepting blame in the wording.
- Setting no response deadline, which lets the insurer stall.
Keep the tone professional and let the evidence do the work. A calm, itemized, well-documented letter signals that you understand your claim’s value and are ready to negotiate seriously.
What Happens After You Send the Demand Letter?
Once the insurer receives your demand, an adjuster reviews it and typically responds within a few weeks. You’ll usually get one of three replies: acceptance, a counteroffer, or a denial with reasons. Most claims land on a counteroffer, which opens negotiation.
Expect back-and-forth — your first demand is intentionally higher than your minimum, and their first offer is lower. The goal is to reach a fair middle. Stay patient, respond with evidence, and don’t accept a figure that ignores your full documented costs.
Should You Write the Demand Letter Yourself?
For a clear claim with modest injuries, many people write an effective demand letter themselves — the key is organization and complete documentation, not legal jargon. Stick to facts, itemize your damages, and attach the supporting records.
For serious injuries or disputed fault, having an attorney draft the letter can add weight and credibility, and their experience with case values often results in a stronger opening demand. Since most work on contingency, it costs nothing upfront to get that help.
Frequently Asked Questions
Do I need a lawyer to write a demand letter?
Not necessarily. For minor, vehicle-damage-only claims, many people write their own. For injury claims or disputed fault, a lawyer’s demand letter often carries more weight and helps value pain and suffering accurately. Most injury attorneys offer free consultations.
How long until the insurer responds?
It’s standard to give the insurer 30 days to respond. Many reply within 30 to 45 days, often with a counteroffer rather than acceptance. If they don’t respond, follow up with the adjuster or their supervisor to keep negotiations moving.
What happens after I send the demand letter?
The insurer will usually accept, request more information, deny, or (most commonly) counteroffer with a lower amount. The demand letter starts the negotiation — expect some back-and-forth before reaching a fair settlement figure.
Bottom line: a demand letter is your entire case distilled onto a page, so make it factual, itemized, and fully documented. Set a response deadline, keep the tone professional, and let the evidence justify your number. A strong letter frames the whole negotiation in your favor from the start.
How Long Should You Wait for a Response?
Give the insurer a reasonable but firm window — commonly two to three weeks — and state that deadline in the letter itself. If they don’t respond, follow up in writing and note the date. A documented follow-up shows good faith and builds a record if the dispute later escalates.
Persistent silence or repeated delays can be a sign the insurer is hoping you’ll give up. At that point, escalating to a supervisor, filing a complaint with your state insurance department, or consulting an attorney usually restarts the conversation quickly.
Conclusion
A well-structured demand letter can set the tone for your entire settlement. Wait until you’ve reached maximum medical improvement, document every loss, make a specific demand with room to negotiate, and set a clear deadline. For serious or disputed claims, a free legal consultation is worth considering.
Disclaimer: This article is for general informational purposes only and does not constitute legal advice. Consult a licensed attorney in your jurisdiction for advice about your specific situation.