What Is a Demand Letter in a Personal Injury Case?

A personal injury demand letter is a formal written document sent to the at-fault party's insurance company that presents the injured party's claim, summarizes the liability evidence, itemizes all damages, and requests a specific settlement amount. The demand letter formally opens settlement negotiations and gives the insurer the documentation it needs to evaluate and respond to the claim.

What Is a Demand Letter?

The demand letter is the bridge between the informal insurance reporting stage — where the claimant notifies the insurer of the accident — and the formal settlement negotiation that determines whether the case resolves without litigation. It is not a court filing and has no specific legal form, but it performs a critical function: it forces the insurer to evaluate the claim against a fully documented record of damages rather than an estimate based on incomplete information.

A demand letter sent by an attorney carries different weight than one sent by an unrepresented claimant. Adjusters treat attorney demand letters as the opening of serious negotiations backed by the implicit threat of litigation. Unrepresented claimant demand letters are sometimes treated as an opportunity for low-ball offers because the claimant has demonstrated they are not yet working with counsel.

The demand letter does not need to identify the precise legal theories, cite statutes, or use legal terminology — but it must be complete, factual, well-organized, and supported by documentation. Adjusters evaluate the demand against the documented record, not the claimant's characterization of it.

When to Send the Demand Letter

The single most important timing principle for demand letters is: do not send until you have reached maximum medical improvement (MMI). MMI is the point at which your treating physician believes your condition has stabilized — that you are as recovered as you are likely to get, or that your permanent impairment has been clearly established.

Sending a demand letter before MMI means you are negotiating before the full scope of injuries is known. Future surgery that was not yet diagnosed, long-term physical therapy needs that had not yet been projected, and permanent impairment that had not yet been formally evaluated all affect the damages total significantly. A settlement reached before MMI is based on an incomplete picture and almost always undervalues the claim.

The other timing consideration is the statute of limitations. California's two-year personal injury statute of limitations under CCP section 335.1 creates an outer deadline. If pre-suit negotiations are ongoing as the deadline approaches, a lawsuit must be filed to preserve the claim regardless of whether negotiations are active. Most attorneys target sending the demand letter at a minimum of 6 to 12 months before the statute of limitations expires to allow time for negotiation before filing becomes necessary.

What the Demand Letter Must Include

A complete California personal injury demand letter typically includes these components:

Liability section: A factual account of how the accident occurred, why the at-fault party bears legal responsibility, and what evidence establishes their fault — the police report, witness accounts, applicable Vehicle Code sections violated, FMCSA regulations violated (for truck cases), or premises liability legal principles (for slip and fall cases). The liability section should be concise and evidence-based, not argumentative.

Injury summary: A chronological account of all injuries, all medical treatment received from each provider, current symptoms, and the treating physician's prognosis. This section should be anchored to the attached medical records, not just the claimant's characterization of them.

Special damages calculation: An itemized list of all economic losses with the supporting documentation referenced. Medical bills from each provider. Lost wage calculation supported by pay stubs and employer documentation. Property damage repair or replacement costs. Out-of-pocket expenses with receipts.

General damages description: A description of the pain, suffering, emotional distress, activity limitations, and life disruption caused by the injury. This section relies on the claimant's testimony, family member observations, and treating physician descriptions of symptom severity — not on documents. The strength of this section directly affects the multiplier the adjuster applies.

Total damages and settlement demand: The calculated total of all economic and non-economic damages, and the specific amount being demanded to settle the claim. The demand amount should be calculated to leave negotiating room while remaining anchored in the documented damages — an unrealistically high demand loses credibility; a demand at the floor of acceptable leaves no room for negotiation.

Calculating the Demand Amount

The demand amount should be calculated from the documented damages total, not from a general impression of what the case is worth. The standard calculation process:

1. Total all documented special damages (medical bills + lost wages + property damage + out-of-pocket expenses)
2. Apply a multiplier based on injury severity, treatment duration, permanence, and liability clarity (typically 1.5x to 4x for moderate injuries, 3x to 5x or higher for serious permanent injuries)
3. Add future medical expense projection from the treating physician's narrative or life care plan
4. Add future lost earning capacity projection if permanent disability affects work ability
5. Total all components for a full damages calculation
6. Set the demand amount above this calculated value — typically 20% to 30% above — to leave negotiating room while remaining credible

For a claimant with $45,000 in medical specials, a multiplier of 3 for a moderately serious permanent injury ($135,000 general damages), and $25,000 in future medical projections, the damages total is $205,000. Setting the demand at 25% above this — $257,000 — leaves negotiating room while remaining defensible against the documented record.

What Happens After You Send the Demand Letter

After the insurer receives the demand letter, they typically have 30 to 40 days to respond, though California has no statutory deadline for insurer demand letter responses. The insurer will assign the demand for review, request any additional records not included in the package, and evaluate the claim against their reserve.

The insurer's response will typically be one of: a counter-offer below the demand amount (the most common response); a request for additional information, medical records, or wage documentation; a coverage defense letter (if the insurer is disputing coverage); or — rarely — an acceptance of the demand amount.

Counter-offers open negotiation. The typical pattern involves several rounds of counter-offers that converge toward a settlement value acceptable to both sides. Most cases that eventually settle do so after 2 to 4 rounds of counter-offers over a period of weeks to months.

If the insurer's counter-offers are inadequate and negotiations stall, the next step is filing a lawsuit before the statute of limitations expires. Filing the lawsuit does not end settlement discussions — most cases continue negotiating after filing and settle at some point during the litigation process, often at or near the mandatory settlement conference.

Government Entity Claims: Demand Letter vs. Tort Claim

When the at-fault party is a government entity — the City of Los Angeles, Caltrans, LA Metro, the City of San Francisco, SFMTA, the City of Sacramento, or any other California public entity — the demand letter process is replaced by the government tort claim process under Government Code section 945.4. The tort claim must be filed with the responsible government entity within six months of the incident — not within the two-year general personal injury statute of limitations.

The government tort claim is a formal document filed with the government entity that must include the claimant's contact information, the date and location of the incident, a description of the circumstances, the government entity's responsibility, the injuries and damages, and the amount claimed. It is the prerequisite to filing a lawsuit against any California government entity.

Some attorneys send a separate demand letter to the government entity's insurance or risk management department in addition to the formal tort claim, particularly where the standard tort claim form does not have space for a full damages narrative. Whether a formal demand letter supplements the tort claim is a strategic decision based on the specific entity and the size and complexity of the claim.