10% Actual Cash Value (ACV) & Deductible Break-Even Calculator
Determine mathematically whether keeping Full Coverage (Collision + Comprehensive) on an older vehicle makes financial sense, and calculate the exact number of claim-free months required to break even when raising your deductible.
Interactive Vehicle Equity & Deductible Analyzer
Enter your vehicle's approximate private-party market value (ACV) and your current physical damage premium from your policy declarations page:
1. Why Insurers Cap Physical Damage Payouts at Actual Cash Value (ACV)
Standard private passenger auto insurance policies insure your vehicle on an Actual Cash Value (ACV) basis rather than replacement cost value. While your vehicle depreciates by 12% to 18% each year as it accumulates mileage, the cost of replacing OEM sheet metal, bumper covers, paint, and body shop labor inflates over time. Consequently, Collision premiums do not drop nearly as fast as your vehicle's market value.
If an older vehicle worth $4,800 suffers $4,000 in collision damage, the insurer will declare the vehicle an economic Total Loss (since repair costs exceed 75%–80% of ACV) and issue a settlement check for $4,800 minus your deductible (plus applicable state title/sales tax fees).
2. How to Apply the 10% Actual Cash Value Rule
To prevent overpaying for diminishing coverage on a paid-off car, subtract your Collision deductible from your vehicle's realistic private-party market value to find your Maximum Net Payout. When your combined annual Collision and Comprehensive premium exceeds 10% of that net payout, you are effectively paying more than one-tenth of the maximum possible recovery every 12 months—even though the average driver files a collision claim less than once per decade.
3. The Partial Strategy: Keeping Comprehensive While Dropping Collision
Dropping physical damage does not have to be an all-or-nothing choice. Because Collision coverage typically accounts for 65% to 72% of your physical damage charges while Comprehensive coverage accounts for only 28% to 35%, many owners of paid-off vehicles worth $4,000 to $7,500 remove Collision coverage while keeping Comprehensive with a $500 deductible. That keeps the vehicle protected against catalytic converter theft, hailstorms, flood, falling trees, and deer strikes for often less than $12 to $18 per month.
4. Deductible Break-Even Math Across Vehicle Lifespans
When your vehicle is still worth $12,000+ or is under an active auto loan, dropping Collision is not an option. Instead, test whether raising your deductible from $500 to $1,000 pays for the extra $500 of claim risk within 36 months. For deeper coverage examples, read our full Car Insurance Deductible Break-Even Guide and our Full Coverage vs. State Minimum Liability Analysis.