How to Write a Demand Letter to an Insurance Company in California

What A Demand Letter Is

A demand letter is a written settlement request sent to the insurance company that covers the at-fault party. It consolidates the facts of the accident, the basis for liability, the documented costs, and a proposed settlement figure into a single document, and asks the insurer to respond by a stated date.

Before a demand letter is received, a claim file generally consists of the initial report of loss, the adjuster's notes, and whatever records providers have submitted. Adjusters can carry hundreds of open files at a time, and a claim is not usually evaluated as a whole until a complete demand is in front of them. The demand letter is what prompts that evaluation and the settlement authority that follows from it.

A demand letter is not a legal filing. Nothing is submitted to a court, no case is opened, and no deadlines are triggered other than the insurer's own response obligations. It functions as the opening position in a negotiation. In the majority of injury claims it is also effectively the closing one, since most claims resolve without a lawsuit being filed.

No law license is required to send one. The document depends on complete records, an organized presentation, and a figure the documentation supports. Certain circumstances do call for legal judgment, and those are set out further down.

When To Send A Demand Letter

The conventional timing is after medical treatment has concluded, or after a treating physician has documented that the patient has reached maximum medical improvement.

The reason is structural. A demand asks for the full value of an injury, past and future. Settlement involves signing a release, and that release closes the claim permanently. A claim settled in week six cannot be reopened in week fourteen when an MRI, an injection series, or surgery becomes necessary. That treatment is paid for out of pocket.

Demands are not always sent after treatment ends. Claims that will clearly exceed the available policy limits, claims approaching the statute of limitations with treatment still ongoing, and conditions with no foreseeable endpoint are all circumstances in which a demand may go out earlier. The tradeoff is the same in each case: the release still closes the claim permanently, so an earlier demand means the valuation is made with less complete information.

Maximum medical improvement is the clinical term for the point at which a condition has stabilized. The patient has either recovered or has reached the level of function they are likely to keep. Discharge from care, a note that the patient has plateaued, or documentation that remaining symptoms are permanent are all indicators.

One outside limit governs the whole process. California allows two years from the date of the accident to settle or file suit on most personal injury claims, under Code of Civil Procedure § 335.1. Treatment can run long and negotiations can stall, and a claim that passes that date is generally extinguished.

Different rules apply when a public entity is involved. Where a city bus, county vehicle, or government employee on duty is at fault, an administrative claim generally must be filed within six months under the Government Claims Act. The two-year statute does not cure a missed administrative deadline.

What To Include In A Demand Letter

Six components appear in most demand letters. The order below is conventional. Adjusters read hundreds of these, and a familiar structure tends to get read carefully.

1. The Header Block

Claim number, date of loss, the insured's name, the claimant's name, and the adjuster's name. This appears at the top so the letter can be matched to the correct file when it is opened. Letters arriving without a claim number sit in a queue.

2. The Facts

Two to four paragraphs describing the accident. Date, time, location, direction of travel, what each vehicle did, point of impact, and what followed — police response, ambulance, tow.

Effective versions are chronological and free of adjectives. "The Honda entered the intersection against a red light and struck the driver's side of my vehicle" is a factual statement. "The other driver recklessly barreled through the intersection" is an argument, and adjusters tend to discount arguments. The facts are more persuasive without accompaniment.

3. Liability

This section sets out the basis for holding the insured driver responsible and points to the supporting evidence: the traffic collision report, any citation issued, the damage pattern, witness statements, and dashcam or surveillance footage where it exists.

Where a Vehicle Code section applies, it is commonly cited. § 21453 covers failure to stop at a red light, § 22350 unsafe speed, and § 21801 an unsafe left turn. A cited section signals familiarity with the process.

Comparative fault is often addressed here. California applies pure comparative negligence, which means a recovery is reduced by the claimant's percentage of fault but never eliminated. A claimant found 20% at fault on a $30,000 claim recovers $24,000. Comparative fault is frequently raised during negotiation, and demand letters often address it directly rather than leaving it unanswered.

4. Injuries And Treatment

Chronological, specific, and anchored to the records.

This section generally begins with the first treatment: what the patient presented with, what was diagnosed, what imaging was performed. It then follows the course of care forward — the follow-up with a primary physician, an orthopedic referral, weeks of therapy, an injection. Providers are named, dates given, and diagnoses described in the language the records use. Where a note documents a permanent restriction or lasting symptom, it is quoted and cited.

Medical specials are then itemized:

Billed amounts are conventionally used rather than the adjusted amounts a health insurer paid. Bills and the underlying records are attached.

5. The Other Losses

Lost wages. Days missed, rate of pay, and total, typically documented on employer letterhead. Self-employed claimants generally use tax returns, invoices, or bank records establishing what the work would have produced.

Out-of-pocket costs. Prescriptions, braces and equipment, mileage to appointments, rental car, co-pays. Individually small, collectively meaningful, and frequently untracked.

Pain and suffering. This is the non-economic component, and it is where self-prepared letters most often fall short — either skipped entirely or filled with generalities.

Specificity is what persuades. Not "I experienced significant pain and suffering," but the concrete version: unable to lift a child for two months, sleeping in a recliner for six weeks because lying flat was unbearable, leaving a Sunday league played in for nine years, still unable to turn far enough to check a blind spot.

An adjuster reading three concrete losses forms a picture. An adjuster reading a page of adjectives forms nothing.

6. The Demand

A figure and a deadline, sometimes a single paragraph.

Demands are conventionally set above the figure a claimant would accept, since a lower counter is expected. A number bearing no relationship to the documented losses tends to be treated as unserious and slows the process. A number set at the claimant's true floor leaves no room to move.

Fifteen to thirty days is a standard response window.

How Much To Ask For In A Demand Letter

Claim value is built from documented losses and a set of factors that carriers weigh consistently, even though no single equation produces the figure. The economic side is arithmetic: medical bills, lost earnings, and out-of-pocket costs. The non-economic side turns on how long the pain lasted, how far the injury reached into daily life, what activities stopped, and whether anything is permanent. Knowing how those pieces are weighted is what makes it possible to build a supportable number rather than guess at one.

Medical specials are usually the anchor. Total billed treatment is commonly the foundation everything else is measured against, though claims driven mainly by wage loss or permanent impairment are weighted differently.

The multiplier convention. Non-economic damages are commonly discussed as a multiple of specials, typically between 1.5x and 5x. The multiplier tends to rise with injury severity, objective findings on imaging, treatment duration, permanence, and surgery. Twelve weeks of therapy for a soft tissue injury sits at the low end of that range. A herniated disc with an injection series and a permanent restriction sits well above it.

The multiplier is shorthand rather than method. Adjusters at the major carriers run claims software weighing dozens of inputs, and the multiplier describes the output after the fact.

A Worked Example

Using the $11,670 in specials from the table above, with eight weeks of documented therapy, an ER visit, an MRI showing a cervical strain, and no surgery or permanent restriction:

This is arithmetic illustrating the convention, not a valuation. The same specials with different injuries, different treatment duration, or different objective findings produce a different range. Policy limits may cap the figure regardless of what the arithmetic produces.

What Moves Value

Policy limits are a hard ceiling. California's minimum liability coverage rose to $30,000 per person and $60,000 per accident in January 2025, up from $15,000/$30,000. Where an at-fault driver carries minimums and a claim exceeds them, that policy is the practical maximum, plus whatever underinsured motorist coverage the claimant carries. Many policies include UM/UIM coverage that the policyholder may not recall selecting.

How Long Does An Insurance Company Have To Respond?

Fifteen days to acknowledge. This is not etiquette. 10 CCR § 2695.5(e), part of the Fair Claims Settlement Practices Regulations, requires acknowledgment of a claim and response to communications within fifteen calendar days.

Forty days to accept or deny after receiving proof of loss, under § 2695.7(b). Where a carrier needs longer, it must state in writing why, and update every thirty days after that.

These are enforceable obligations, and most claimants are unaware they exist. An adjuster who has gone silent for three weeks is out of compliance. A short letter citing the section frequently ends the silence. Where it does not, the California Department of Insurance accepts consumer complaints, and carriers track complaint volume closely.

First offers are commonly below what a claim eventually settles for. An opening figure is not in itself a sign that something went wrong, though on a small claim with complete documentation a first offer is sometimes close to the eventual number.

Negotiation typically runs several rounds over a few weeks. Counters that cite something specific tend to move the file. "I am not accepting that" moves nothing. "Your evaluation appears to treat the cervical strain as resolved at six weeks, but Dr. Chen's October 14 note documents continued restricted range of motion and recommends ongoing therapy" gives the adjuster language to justify a higher number to a supervisor.

The release ends the claim. It is a contract, and it is rarely set aside once signed.

Common Demand Letter Mistakes

Sending before treatment concludes without a reason to. Covered above. Where there is no policy-limits or deadline pressure, an early demand values the claim on incomplete records, and the release still closes it permanently.

Recorded statements in the first week. The adverse driver's adjuster often asks within the first few days. A claimant generally has no obligation to give a recorded statement to the other driver's insurer, though a claimant's own policy may contain a cooperation clause that applies to their own carrier. Statements about feeling fine, given while adrenaline is still masking symptoms, are quoted back months later.

Lapses in treatment. A five-week gap followed by resumed therapy tends to be read as recovery followed by an unrelated event. Where a pause was caused by cost, childcare, or work, demand letters commonly explain it rather than leaving it unaddressed.

Understating non-economic damages. Many people are uncomfortable describing what an injury did to their life and produce two vague sentences. That component is frequently the largest part of a claim.

Accepting the first offer. It is priced to be accepted by people who do not know it is an opening.

Missing the deadline. Two years for most claims. Six months against a public entity.

Do You Need A Lawyer To Write A Demand Letter?

Some claims are commonly handled without representation and some are not. The distinction generally tracks complexity and stakes rather than claimant preference.

The economics are straightforward arithmetic. A contingency fee runs 33 to 40 percent plus costs. On a $30,000 settlement that is $10,000 or more before expenses. Where counsel adds more than that to the outcome, the fee has been earned. Where the file is clean and the work is administrative, that fee purchases document management.

Which category a claim falls into depends on its own facts: how clear the liability picture is, how severe and how permanent the injuries are, and how the available coverage compares to the documented losses.

Where WinVero Fits

WinVero is a free tool for California accident claims. It runs an intake interview, assembles a case file from uploaded documents plus records the team retrieves, produces a claim valuation, and drafts demand letters and adjuster correspondence.

The user controls the process. Nothing is sent to the insurance company without the user's explicit authorization, and WinVero never becomes a party to a claim.

There is no retainer, no contingency fee, and no deduction from settlement. The insurer pays the claimant directly and WinVero is never a payee. The case file belongs to the user, downloadable at any point and portable to any attorney.

A free second opinion from a lawyer at an affiliated firm can be requested at any stage. That request is the user's to initiate. Where a lawyer is brought in, the Settlement Floor applies: the fee is calculated only on money recovered above whatever offer already exists.

WinVero is not a law firm and does not provide legal advice.