Quick answer

It depends on how you file. If you claim against the at-fault driver's liability insurance, there's no deductible at all. If you use your own collision coverage instead, you pay your deductible first, then your insurer recovers it from the other driver through subrogation and refunds it to you.

You did nothing wrong. Someone rear-ended you at a light or backed into your car in a parking lot, and now you're staring at a repair estimate wondering why the word "deductible" is even part of the conversation. It feels unfair to pay anything when you weren't at fault. The good news: in most not-at-fault situations you will not carry that cost in the end. The details of when you pay and how you get it back are what trip people up, so let's walk through it clearly.

Repaired right regardless of who pays, at Green Tech Collision Center, Upland.
Repaired right regardless of who pays, at Green Tech Collision Center, Upland.

Whose insurance pays when the other driver is at fault?

After a crash the other driver caused, you generally have two paths to get your car repaired, and they handle the deductible very differently.

Path one: file against the at-fault driver's liability coverage. Every driver in California is required to carry liability insurance, which pays for damage they cause to other people's property. Property-damage liability has no deductible. If the other driver clearly caused the accident and has adequate coverage, filing a "third-party" claim against their insurer means the repair is paid without a dollar coming out of your pocket.

Path two: file through your own collision coverage. This is the route many people take, especially when fault is still being sorted out or the other insurer is slow to accept responsibility. Your own collision coverage repairs your car quickly, but it carries the deductible you chose when you bought the policy — commonly $500 or $1,000. You pay that up front, and then your insurance company goes after the at-fault party to get it back.

What is subrogation, and how do I get my deductible back?

When you file through your own collision coverage, your insurer doesn't just eat the cost. It pursues the at-fault driver's insurance company to recover what it paid out — a process called subrogation. Your insurer investigates fault, sends a demand to the other company, and the two negotiate a settlement.

Here's the part that matters to you: your deductible rides along with that recovery. When your insurer collects from the at-fault party, it refunds your deductible to you. If they recover the full amount, you typically get your entire deductible back. So while you may front the money temporarily, in a clear not-at-fault claim it usually comes home.

There's a California wrinkle worth knowing. Our state uses comparative fault, meaning responsibility can be split by percentage. If you're found even partially at fault — say 20% — your deductible refund can be reduced by that same share. When the other driver is 100% at fault, you should expect the full deductible returned.

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Should I file with their insurance or my own?

Going straight through the at-fault driver's liability insurance avoids the deductible entirely, which is appealing. But it isn't always the fastest option. The other insurer has to accept fault before it authorizes repairs, and if they drag their feet or dispute who's responsible, your car sits waiting.

Filing through your own collision coverage gets your vehicle repaired now. You pay the deductible temporarily and let subrogation recover it later. For many drivers that's the calmer path — the car gets fixed correctly and on time, and the deductible sorts itself out in the background. Talk it through with your adjuster and, honestly, with your repair shop, because a shop that documents the damage thoroughly makes the fault question far easier to resolve either way.

What if the other driver has no insurance — or not enough?

This is where a not-at-fault accident can genuinely cost you if you're not prepared. If the person who hit you has no insurance, or not enough to cover the damage, there's no liability policy to pay and no one to subrogate against. Your own coverage becomes the safety net:

The lesson most drivers only learn the hard way: check your policy before you need it. Adding uninsured-motorist protection and a collision deductible waiver is inexpensive and is exactly what protects you when someone else's failure to insure their car becomes your problem.

How long does deductible reimbursement take?

Subrogation happens between two insurance companies, so the timeline is largely out of your hands. It can take anywhere from a few weeks to several months, and longer if fault is contested. Don't let that hold your car hostage. You can have the repair completed while reimbursement is worked out — the two processes run in parallel. A well-documented repair file actually speeds subrogation up, because it gives your insurer clean evidence of what the damage was and what it cost to fix correctly.

Does not being at fault change where I can get my car repaired?

No. Whoever ends up paying, the choice of shop is still yours. In California you have the legal right to select your own repair facility, and neither your insurer nor the at-fault driver's insurer can require you to use one of theirs. If an adjuster steers you toward a "preferred" shop, that's a suggestion, not a rule — you can read more in our guide on whether you have to use the body shop your insurance recommends. It's also worth understanding diminished value claims in California, since a not-at-fault accident can leave your vehicle worth less even after a flawless repair — and that loss may be recoverable from the at-fault party too.

The bottom line

When the accident wasn't your fault, you shouldn't end up eating the cost. Claim against the other driver's liability and you skip the deductible; use your own collision coverage and you front it, then get it back through subrogation. The only real risk is an uninsured or underinsured driver — which is exactly what your own uninsured-motorist coverage and a deductible waiver are for. Whatever path you take, choose a shop that documents the damage properly and repairs your car the right way. That's what makes the whole claim go smoothly.

This article is general information for California drivers, not legal or insurance advice. Coverage varies by policy — for questions about your specific claim, consult your insurer or an attorney.