How to Write a Demand Letter After a Car Accident
The demand letter is the document that opens formal settlement negotiations. It establishes your anchor number — and in negotiation, the first number stated has disproportionate influence on the final outcome. A well-structured, fully documented demand letter with a credible number gets serious engagement. A vague letter with no documentation gets a low offer and a long delay.
First Responder Insight: The most common mistake I see: people send demand letters before they know their full medical costs, or before reaching MMI. The insurer loves this — they settle your claim for less than your remaining treatment will cost, and you have no legal recourse because you signed the release. Wait until you know the full picture.
When to Send the Demand Letter
Wait Until You Reach Maximum Medical Improvement (MMI)
MMI is the point at which your treating physician determines your condition has stabilized to its best expected level. Only at MMI do you know your total medical costs, your ongoing care needs, and the full extent of your injury. Sending a demand letter before MMI is one of the most expensive mistakes an accident victim can make.
What to Include in the Demand Letter
Section 1: Identification
Your full name, address, date of birth, claim number (if already assigned), and the at-fault driver's name and insurer. Send via certified mail, return receipt requested.
Section 2: Factual Summary of the Accident
Date, time, location, and circumstances. State the facts clearly and without embellishment. Attach the police report. Note the other driver's violations — running a red light, texting, following too closely. State liability facts in a way that leaves no room for doubt.
Section 3: Your Injuries
List every diagnosis from every treating provider. Use the medical terminology from your records. Include: initial ER findings, specialist diagnoses, imaging findings (herniated disc at L4-L5, rotator cuff tear, etc.), functional limitations, and the physician's prognosis. Attach medical records and the MMI report.
Section 4: Medical Treatment and Cost
Itemized list of all treatment received and total charges. Include: emergency services, hospitalization, surgery, imaging, specialist visits, physical therapy, chiropractic, prescriptions, and medical equipment. Attach all bills. State projected future treatment costs with the physician's written support.
Section 5: Lost Wages and Income
Document every day of work missed with pay stubs and an employer letter confirming your position, wage, and absence. If you are self-employed, provide tax returns and a CPA letter. Include lost earning capacity if your injury affects your future work ability.
Section 6: Pain and Suffering
Describe the daily impact of your injury in concrete, specific terms. Reference your pain journal. Describe activities you can no longer do. Include emotional impact — anxiety, PTSD, sleep disruption, relationship strain. This section humanizes your claim.
Section 7: Summary of Damages
A clean itemized total of all economic damages, followed by your pain and suffering calculation (multiplier method), and a grand total demand. This should be 2–3x your economic damages to leave negotiating room.
Section 8: The Demand
State your demand figure clearly and set a response deadline — typically 30 days. State that if a fair settlement cannot be reached, you will pursue all available legal remedies. Do not threaten a lawsuit in legal language you do not understand — keep it factual.
Demand Letter Template Structure
[Your Name]
[Your Address]
[Date]
[Insurance Company Name]
[Claims Department]
[Address]
Re: Claim for Personal Injury Damages
Your Insured: [At-Fault Driver Name]
Claim Number: [XXXXXXXX]
Date of Accident: [MM/DD/YYYY]
Dear Claims Adjuster [Name]:
I am writing to demand compensation for injuries
I sustained as a result of the negligence of your
insured, [At-Fault Driver], on [Date], at [Location].
FACTS OF THE ACCIDENT
[2-3 paragraphs describing the accident, the other
driver's violations, police report findings]
MY INJURIES
[Detailed description of all diagnoses and treatment]
MEDICAL TREATMENT AND EXPENSES
- Emergency Room (Hospital Name): $XX,XXX
- Ambulance: $X,XXX
- Specialist (Dr. Name): $X,XXX
- MRI / Imaging: $X,XXX
- Physical Therapy (## sessions): $X,XXX
- Prescriptions: $XXX
TOTAL MEDICAL EXPENSES: $XX,XXX
LOST WAGES
[Dates missed / hourly rate or salary]
TOTAL LOST WAGES: $X,XXX
PAIN AND SUFFERING
[Description of daily impact, using multiplier or
per diem method to arrive at P&S figure]
PAIN AND SUFFERING: $XX,XXX
TOTAL DAMAGES SUMMARY:
Medical Expenses: $XX,XXX
Lost Wages: $X,XXX
Pain and Suffering: $XX,XXX
TOTAL DEMAND: $XXX,XXX
I demand the sum of $[AMOUNT] to resolve this claim
in full within 30 days of receipt of this letter.
Sincerely,
[Your Signature]
[Your Printed Name]
Enclosures:
- Police Report
- Medical Records (all providers)
- Medical Bills (all providers)
- Employer Letter and Pay Stubs
- Photos of Injuries and VehicleWhat to Avoid in Your Demand Letter
- Exaggerating or overstating injuries — anything that contradicts your medical records destroys credibility
- Emotional language or anger — keep it factual and professional; emotional letters get lower offers
- Vague damage descriptions — "I suffered great pain" vs. "I experienced 8/10 cervical spine pain daily for 4 months, preventing me from returning to work"
- Unrealistically high demands — demanding $1 million for a soft tissue injury signals you do not understand value, and the insurer will disengage
- Sending before MMI — see above; this is the most costly mistake
- Missing documentation — every number in the letter should be supported by an attached document
What Happens After You Send the Demand Letter
- The insurer has 30–60 days to respond (varies by state)
- They will typically counter with a lower number — this is normal; it opens negotiation
- Expect 2 to 5 rounds of negotiation before reaching agreement
- If the insurer does not respond or makes a bad faith offer, your next step is filing a lawsuit (see our lawsuit guide)
Key Takeaway
The demand letter is not a legal document in the sense that it binds either party — it is an opening move in a negotiation. Its power lies in being well-documented, factually precise, and grounded in a number you can defend. A letter with complete medical records, an itemized damage calculation, and a credible demand signals that you know your claim's value. That signal alone produces better offers than an emotional or vague letter ever will.