Quick answer: Compare the repair estimate to your deductible. If the repair costs less than or close to your deductible, paying cash usually makes sense. If another driver was at fault, their liability coverage should pay — and your deductible isn't involved at all.
The deductible math
If the repair costs less than your deductible, filing a collision claim gains you nothing: you'd pay the full repair yourself anyway, and you'd add a claim to your record. If the repair is only modestly above your deductible — say a $1,200 repair against a $1,000 deductible — many drivers still pay cash, because a collision claim can affect your rates at renewal, and in California a chargeable at-fault accident can also cost you your good-driver discount under Proposition 103's rating rules. If the repair is well above your deductible, that's what insurance is for. File the claim.
Two important exceptions
First, if another driver was at fault, you can claim against their liability insurance instead — no deductible, no collision claim on your policy. (You can also use your own collision coverage and let your insurer recover from theirs, which is often faster; your deductible comes back if subrogation succeeds.) Second, never promise to “settle it privately” at the scene. Exchange information anyway. Damage that looks like a $300 scuff can hide a $3,000 repair, and California still requires an SR-1 report to the DMV within 10 days if damage exceeds $1,000 or anyone was hurt — regardless of whether an insurance claim is filed.
Know the real numbers first
At today's parts and paint prices, even a “minor” bumper respray runs several hundred dollars, and a bumper cover replacement with sensors can pass $1,500 quickly. Most people's instinct about what damage costs is a decade out of date — which is why the estimate comes first and the decision second.
At Spark Collision Center in Fremont, estimates are free, no appointment needed, Mon–Fri 8–5 and Sat 8–12. We'll give you the cash price and the claim scenario side by side and tell you honestly which way we'd go if it were our vehicle. Plenty of our customers pay out of pocket once they see the actual number; plenty of others discover the damage is worse than it looked and are glad they brought the claim number.