Auto Insurance — Liability-Only vs Full Coverage (2026)
Once your car's actual cash value drops below about 10x your annual collision+comprehensive premium, dropping full coverage typically saves money long-term. This 2026 calculator runs the math.
| Car ACV | — |
| Net at-risk amount (ACV - deductible) | — |
| Full coverage annual cost | — |
| Liability-only annual cost | — |
| Annual savings dropping full coverage | — |
| Savings over period | — |
Liability insurance covers damage you cause to other people and their property — it's legally required in nearly every state. Full coverage adds collision (your car after at-fault accident) and comprehensive (theft, weather, animal strikes). Once your car's actual cash value drops below about 10x the annual cost of collision+comp, dropping full coverage saves money over time.
The 10x Rule
If your car's actual cash value minus the deductible is less than 10x the annual cost of adding collision+comprehensive, you're paying a high effective rate to insure a small risk pool. III industry data supports a break-even between 8x and 12x. Example: a $6,000 car with a $500 deductible has $5,500 at risk. If full coverage costs $900/yr more than liability-only, your ratio is 6.1x — drop full coverage and self-insure.
When Not To Drop It
Three rules override the math. (1) Loan or lease: lenders require full coverage and gap insurance. (2) New car: rapid depreciation in years 1-3 makes self-insuring expensive. (3) Weak emergency fund: if losing the car would leave you stranded or unable to get to work, the insurance is cheap peace of mind. Never drop liability — most states mandate 25/50/25 minimums, and modern lawsuit awards routinely exceed $100,000.
Last updated May 2026. Sources: Insurance Information Institute.