What is a collision deductible waiver?

An optional coverage that pays the deductible on your collision claim when a qualifying other driver caused the crash. California's Department of Insurance describes it as paying your collision deductible when your insured vehicle is damaged by an uninsured driver who is at fault. Massachusetts sells a Waiver of Deductible Endorsement triggered by listed scenarios involving an identified driver.

Does my insurance have to waive my deductible if I was not at fault?

No. Massachusetts regulators say that without a waiver endorsement on the policy, there is no requirement that the company waive your deductible regardless of fault findings. Without the endorsement, your insurer pays the claim minus the deductible and seeks the deductible back from the at-fault driver through subrogation.

Is a collision deductible waiver the same as uninsured motorist property damage?

No. In California, uninsured motorist property damage pays for damage to your car from an identified, uninsured, at-fault driver up to a $3,500 limit, and the department says you may not need it if you have collision coverage. The collision deductible waiver pays only your collision deductible in that same situation, so it is for drivers who already carry collision.

Does a collision deductible waiver cover a hit-and-run?

Generally not when the driver is unidentified. California's version requires an uninsured driver who is at fault, and the state's related uninsured motorist property damage coverage only pays if the uninsured driver is identified. Massachusetts' listed scenarios also refer to an identified person. A hit-and-run is handled under your collision or uninsured motorist coverage instead.

Will I get my deductible back without a waiver?

Possibly, through subrogation. Washington's insurance regulator says your company must include your deductible in its subrogation demand to the at-fault party, and Texas regulators note that if your insurer recovers anything, you might get your deductible reimbursed. If the other driver is uninsured or cannot be identified, there may be nothing to recover.

Collision Deductible Waiver: What It Is and When It Actually Pays

Updated 2026-10-05 · This article is for general educational information only and is not insurance advice.

A collision deductible waiver, sometimes written CDW or sold as a waiver of deductible endorsement, is an optional coverage that pays the deductible on your own collision claim when a specific kind of other driver caused the crash. California's Department of Insurance describes it as coverage that pays for your collision deductible if your insured vehicle is damaged in an accident with an uninsured driver who is at fault. Massachusetts frames it as an endorsement that waives the deductible when the other driver is identified and the crash fits listed scenarios. The important thing to understand is what it is not: it is not automatic, and it is not the same as being not at fault. Without the endorsement, Massachusetts regulators say, there is no requirement that the company waive your deductible, regardless of any at-fault or not-at-fault findings.

The problem it solves

When another driver hits you, you have two routes. Claim against their liability insurance and there is no deductible, but you depend on their insurer accepting fault and having coverage. Use your own collision coverage and the repair starts right away, but your deductible comes off the top. Texas regulators put the math simply: with a $1,500 collision claim and a $500 collision deductible, the company deducts $500 and pays you $1,000. Your insurer then pursues the at-fault driver through subrogation, and Washington's insurance regulator says your company must include your deductible in its subrogation demand to the at-fault party. If the other driver is uninsured, there may be nobody to recover from, and the deductible stays gone.

A collision deductible waiver fills exactly that hole. You still file the collision claim with your own company, but the deductible is paid or waived under the endorsement instead of coming out of your pocket while subrogation runs, or never comes back at all.

How the California version works

California's rules are the clearest published example. The Department of Insurance lists the Collision Deductible Waiver alongside uninsured motorist property damage, or UMPD, and explains the pair. UMPD pays for the damage to your car from an accident with an uninsured driver who is at fault, with a limit of $3,500, and it only pays if the uninsured driver is identified. The department adds that you may not need UMPD if you have collision coverage, because collision already pays for the car. What collision does not do is absorb the deductible, which is why the waiver exists for drivers who carry collision. The department's coverage comparison tool lists a waiver on collision deductible as a standard coverage option, so it is a line item you can ask any California insurer about.

The other driver must be uninsured and at fault. A hit-and-run with no identified driver is a different claim.
You must carry collision coverage, since the waiver attaches to it.
The waiver pays the deductible only. The repair itself is paid by your collision coverage.

How the Massachusetts version works

Massachusetts uses a Waiver of Deductible Endorsement with a list of triggering situations. The Division of Insurance gives these as common requirements: your auto was legally parked when it was struck by another auto owned by an identified person; your auto was struck in the rear by another auto moving in the same direction and owned by an identified person; or the operator of the other auto was convicted of certain violations, such as operating under the influence of alcohol, marijuana or a narcotic drug, driving the wrong way on a one-way street, or operating at an excessive rate of speed. The deductible is not waived if your own driver was also convicted of one of those violations. The division notes that most companies use the same endorsement, but you should check the language of yours.

This is a different design from California's. Massachusetts keys the waiver to an identified other driver and specific fault patterns, not to the other driver being uninsured. The lesson for everyone else is that the name on the endorsement tells you little; the triggering conditions are what matter, and you should ask for them in writing.

What about everyone else?

Outside states with a published version, the deductible on a not-at-fault collision claim is handled by subrogation, not a waiver. Texas regulators explain that if you use your collision coverage after another driver hits you, your insurer will go after the other company, and if they get anything back, you might get your deductible reimbursed. Washington requires that the deductible be part of the demand. That system works when the other driver has insurance and fault is clear. It fails when the other driver is uninsured or unidentified, or when the other insurer argues both drivers were at fault, which Texas regulators warn can happen. Massachusetts adds one honest note: a company may decide to return your deductible as a customer service, but it is not required to.

Two related protections are worth knowing. Uninsured motorist property damage, where sold, pays for the car when an uninsured driver is at fault, and Texas requires insurers to offer uninsured motorist coverage, though in Texas a deductible applies to those claims too and the coverage will not pay for a hit-and-run you did not report to police. Body shops that advertise they will waive your deductible are offering something else entirely, which regulators warn against.

Should you buy it?

You carry collision coverage with a deductible you would feel. The waiver only matters if there is a deductible to protect.
You drive where uninsured drivers are common. The California design is built for exactly this.
Your state and insurer offer it. Ask by name, and ask what triggers it, because the California and Massachusetts conditions are different.
Compare the premium to your deductible. A waiver that costs a meaningful fraction of the deductible each year only pays off if you are hit by a qualifying driver.

Bottom line: a collision deductible waiver is a small optional coverage that pays your collision deductible when a qualifying other driver causes the crash, uninsured and at fault in California's version, identified and in listed scenarios in Massachusetts'. It does not exist on your policy unless you bought it, and being not at fault does not create it. If you do not have it, your path to the deductible is subrogation, which depends on the other driver having insurance to recover from.