How long a car accident case takes depends on which stage it is in, because each stage moves at its own pace and is controlled by different people: you and your doctors, the insurer, or a court. California sets fixed response periods for insurers, but those periods govern the insurer’s paperwork, not the overall length of your case.
Why the answer depends on which stage the claim is in
A car accident claim moves through distinct stages. Treatment comes first, followed by the records and bills, the demand, the negotiation, and, if a lawsuit is filed, the court process. The total length is the sum of how long each stage takes, so a claim can move quickly through its early stages and then stall in a later one.
This page explains each stage and what speeds or slows it. It does not decide who was at fault, which is a separate question, and it does not estimate what a claim is worth. Every car accident claim also has a filing deadline, and this page does not cover it. Nothing here is legal advice about your claim, and no general explanation can tell you how long your own case will take.
Stage 1: Treatment until the medical picture is stable
A claim is easiest to value once treatment has brought the injury to a stable point. Doctors often call this maximum medical improvement, meaning the point where they do not expect meaningful further recovery. Before that point, no one can say with confidence what the care will cost, what lasting effects remain, or whether future treatment will be needed.
Several things slow this stage. An injury that keeps changing needs more follow-up, specialist referrals and imaging take time to schedule, and gaps in care make it harder to connect later treatment to the crash, which an adjuster will ask about. The stage moves fastest when the treatment plan is followed, follow-up visits are kept, and the doctor records how the injury is progressing. This stage follows your medical course, not a calendar. The filing deadline is different: it keeps running while treatment goes on, so speak to a lawyer well before it arrives.
Stage 2: Gathering records and bills
A complete file needs your medical records and itemized bills before the injury can be valued. Each provider releases its own records on its own schedule, and some require a separate written request for each set. Bills often arrive after the care they describe, so a file can look finished while a bill is still outstanding.
Several things slow this stage: visits to many providers, requests sent late, records that are incomplete or hard to read, and bills that do not match the records. Sending the demand before the file is complete tends to produce another round of questions and another wait.
The stage moves faster when you list every provider from the first visit, request records as each visit closes, and keep copies of every request and every page you receive. Check that the dates of service on the bills match the dates in the records, since a mismatch is one more thing to resolve.
Stage 3: The demand package and the insurer’s response clock
The demand package is the written request for payment, sent with supporting records and bills. California regulations set fixed response periods for the insurer. Within 15 calendar days of notice of a claim, the insurer must acknowledge it, provide forms and instructions, and begin any necessary investigation, unless it makes payment in that period. Separately, it must give a complete response within 15 calendar days to any communication that reasonably suggests a response is expected.
After the insurer receives proof of claim, it must accept or deny the claim in whole or in part within 40 calendar days. If the insurer denies your claim or disputes liability or damages, it must say so in writing, though when you are claiming against the other driver’s insurer the regulation does not require it to list its reasons. If it needs more time, it must send written notice within that 40-day window and then every 30 days until it decides. These duties apply before suit; the regulation stops requiring them once the insurer receives notice of a legal action. The 40 days run from proof of claim, not from notice, so that date matters. Sending a complete package avoids the follow-up questions that add time.
Insurance Code 790.03(h) requires reasonably prompt action on claim communications and a decision within a reasonable time after proof of loss is complete. It gives no day counts, and a single late response does not violate it without a knowing or general-business-practice element. Some claim types are carved out of the 40-day rule, and the regulation allows 80 days when the insurer reasonably suspects fraud.
Stage 4: Negotiation, and why the first offer arrives fast
Negotiation begins when the insurer responds to the demand, often with an offer. A first offer can arrive quickly because it is made on whatever the file shows at that moment. Accepting an offer before treatment has stabilized can settle the claim before the full cost of care is known, which is why the timing of any offer deserves a close look.
If an offer is accepted, the regulation contemplates a release where one is needed, and payment or performance is due within 30 calendar days of acceptance. That 30-day clock runs from acceptance, not from proof of claim, so it is separate from the 40-day decision period.
Asking the insurer in writing for the basis of any denial or compromise offer creates a record and gives you a specific question to answer before you respond.
Is the first offer the insurer’s full number, or only where it starts?
An early offer can be made before your treatment is finished, so it may not include care you still need.
Stage 5: If a lawsuit is filed (pleadings, discovery, depositions, mediation, trial setting)
A lawsuit starts with pleadings: the complaint, then the defendant’s response. Discovery is the exchange of information through written questions, requests for documents, and records requests to providers. Each answer tends to hold up the next step, so a slow response from either side pushes later steps back.
Depositions are sworn testimony taken outside the courtroom. They have to be scheduled around the calendars of the lawyers, the parties, and sometimes the doctors, and each one can prompt follow-up questions and more records. Mediation is a session with a neutral third party to try to settle. It is held on a set date and works best once enough information has been exchanged for both sides to value the case.
Trial setting is the last step, and the trial date depends on the court’s calendar and on when the case is ready. California requires that an action be brought to trial within five years after it is commenced against each defendant. That is an outer limit, not an estimate of how long a case takes. This page does not cover the time that is excluded from that limit or what happens if it passes.
What a rejected CCP 998 offer changes about insurer delay (Civil Code 3291)
Under CCP 998, a party can serve a written offer to settle. The offer must be served at least 10 days before trial or arbitration, and it is deemed withdrawn if it is not accepted before trial or within 30 days, whichever comes first. This applies only once a lawsuit is pending, so it does not apply to a pre-suit demand.
Civil Code 3291 adds interest for personal injury plaintiffs, but the plaintiff has to claim it in the complaint. If the defendant does not accept a plaintiff’s 998 offer and the judgment is more favorable to the plaintiff than that offer, the judgment bears 10% simple interest per year from the date of the first 998 offer the judgment exceeds, until it is satisfied. The section does not apply to public entities or to public employees acting within the scope of employment.
This is why delay has a cost once a rejected offer is on the table. The interest does not wait for the rejection to be noticed. It runs from the offer date, so time between that offer and the judgment adds to the amount owed. A defendant’s offer works the other way: if the plaintiff does not beat it, the plaintiff loses postoffer costs and pays the defendant’s costs from the offer date.
What you can do to avoid adding delay
None of these steps sets a timeframe for your case. They remove delays that come from your side and make the insurer’s deadlines easier to track.
Follow the treatment plan your doctor gives you and keep follow-up appointments, so the medical record shows a continuous course of care.
Request each provider’s records and itemized bills as each visit closes, and keep a log of what you asked for and when.
Put every communication with the insurer in writing and keep copies. A communication that reasonably suggests a response is expected falls under the 15-day response duty in 10 CCR 2695.5(b). These response duties apply before suit; the regulation stops requiring them once the insurer receives notice of a legal action.
Note the date the insurer received proof of claim, since the 40-day decision period runs from that date. If the insurer needs more time, keep track of the written status notices that are due every 30 days.
Ask in writing for the basis of any compromise offer, so the insurer’s reasoning is on the record before you answer it.
Answer the insurer’s requests for information quickly, because an open request pauses the file on your side.
Before you respond to any offer, ask your lawyer whether your medical picture is stable enough to value the claim.
Questions to ask a lawyer about your own timeline
A lawyer can apply these stages to your facts, which no general page can do. Useful questions include the following.
Is my treatment far enough along to value my injuries, and what would change that?
What date does the insurer’s 40-day decision period run from in my claim, and has written notice been received?
Which records and bills are still missing, and who has them?
If the insurer makes an offer, what should I know before I answer it?
If a lawsuit is needed, what does the schedule look like for discovery, depositions, mediation, and trial setting?
Does a 998 offer make sense in my case, and when would it be served?
Who tracks the five-year trial limit, and which time is excluded from it?
Frequently Asked Questions
How long does it take to settle a car accident claim in California? No rule on this page sets a date for settlement, and the length depends on the stage the claim is in. Treatment, records, and bills take as long as the medical course and the paperwork require. The regulation’s decision period is 40 calendar days from proof of claim, and it allows longer only in the cases it specifies.
How long does an insurance company take to respond to a demand letter in California? A communication that reasonably suggests a response is expected must get a complete response within 15 calendar days under 10 CCR 2695.5(b). Once the insurer has proof of claim, it must accept or deny within 40 calendar days, and if it needs more time it must send written notice within that window and every 30 days after. The 40 days run from proof of claim, not from notice of the claim.
How long after the first settlement offer do you get a second offer? The rules on this page do not set a date for a second offer, so the pace depends on the negotiation. Asking in writing for the basis of each offer puts the insurer’s reasoning on the record. Ask your lawyer how each counteroffer fits the stage your claim is in.
Why shouldn’t I accept the first offer from the insurance company? A first offer can arrive before treatment has stabilized, so it may leave out costs that have not yet appeared. If an offer is accepted, the regulation contemplates a release where one is needed, and payment is due within 30 calendar days of acceptance. This page explains the process and is not legal advice about whether to accept any particular offer.
How long does a car accident lawsuit take to go to trial in California? No single number applies, because the trial date depends on how far discovery, depositions, and mediation have gone and on the court’s calendar. California requires an action to be brought to trial within five years after it is commenced against each defendant, which is an outer limit rather than a typical timeline. This page does not cover the time excluded from that limit or the consequences if it passes.
Before you rely on any estimate of your own timeline, talk it through with a lawyer who can review your records, your bills, and the dates on your claim. There is no fee unless we win, and no case costs are charged if there is no recovery. Call 310-600-7881 for a free case review, or send us the details and we will call you back.
