Calculators
Auto Insurance Coverage Calculator
Get suggested auto liability limits based on what you could lose in a lawsuit, and check whether collision and comprehensive cover still pays.
- Runs in your browser
- Nothing uploaded
The tool
Enter your numbers below. Results update as you type, and nothing leaves your browser.
Everything you enter stays on your own machine. Nothing is sent to us or to anyone else, which you can confirm in your browser network tab.
What people use it for
- Reviewing auto insurance limits
- Deciding whether to drop collision cover
- Preparing for a policy renewal
- Insurance agent consultations
About this tool
What the Auto Insurance Coverage Calculator does
Liability cover protects your savings and income if you injure someone. A common guideline is to carry liability limits at least equal to your net worth, with an umbrella policy above that. For older cars, collision and comprehensive cover may cost more over a few years than the car is worth.
Formula
- Exposure = net worth + two years of income
- Suggested limit = the smallest common tier (100k, 250k, 500k) covering exposure
- Collision check: premium above about 10% of car value may not be worth it
Worked example
Using the starting values in the calculator above:
| Input | Value |
|---|---|
| Net worth (excluding retirement accounts) | $300,000 |
| Annual income | $90,000 |
| Current bodily injury limit per person | $100,000 |
| Car value | $9,000 |
| Annual collision and comprehensive premium | $900 |
| Collision deductible | $500 |
| Result | Value |
|---|---|
| Suggested bodily injury limit per person | $500,000 |
| Collision and comprehensive | Likely still worth keeping |
| Increase over current limit | $400,000 |
| Umbrella policy | Optional |
| Annual physical damage premium as share of car value | 10.0% |
| Assets and income at risk | $480,000 |
How to read the result
State minimum liability limits are often far too low to protect a household with savings or a home.
If your car is financed or leased, the lender will require collision and comprehensive cover.
Estimates for planning only. Actual premiums and benefits depend on the insurer, policy terms and underwriting.
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Questions
Questions about this tool
The things clients actually want to know — costs, timelines, ownership and what happens after launch.
Enough to protect your net worth and future income; many advisers suggest at least 100/300 and often 250/500.
When annual premiums approach about 10% of the car's value, or you could easily replace the car.
Limits of 100,000 bodily injury per person, 300,000 per accident and 100,000 property damage.
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