Most drivers need more car insurance than their state legally requires. State minimums — often 25/50/25 or similar — can be completely exhausted by a single medium-severity accident, leaving you personally on the hook for whatever exceeds that limit. The insurance industry’s real-world baseline is 100/300/100, and financial advisors generally recommend 250/500/100 or higher for most middle-income households, paired with an umbrella policy once your assets exceed your liability limits.
Here’s how those numbers actually work, why state minimums leave a dangerous gap, and how to figure out the right coverage level for your specific situation.
Key Takeaways
- Liability limits are written as three numbers — like 100/300/100 — representing per-person injury, per-accident injury, and property damage limits.
- State minimums, often 25/50/25 or lower, can be exhausted by a single serious accident, leaving you personally liable for the rest.
- 100/300/100 is the industry’s practical real-world minimum, regardless of what your state actually requires.
- 250/500/100 or higher, paired with an umbrella policy, is the general recommendation once your net worth exceeds your basic liability coverage.
Decoding the Three Numbers
Auto insurance liability limits are written as three numbers — for example, 100/300/100 — meaning $100,000 in bodily injury coverage per person, $300,000 in bodily injury coverage per accident total, and $100,000 in property damage coverage per accident. Each number caps a different piece of what your insurance actually pays out after an at-fault accident (ReadMyPolicy).
Why State Minimums Leave You Exposed
Most U.S. drivers in 2026 carry state-minimum limits, commonly 25/50/25 or lower — coverage that can be completely exhausted by a single medium-severity accident. Once the limit is hit, you’re personally responsible for whatever medical or repair costs exceed it, which can mean wage garnishment or a lawsuit against personal assets in a serious crash (WalletHub).
The industry generally treats 100/300/100 as the practical real-world minimum, regardless of what a given state technically requires — it’s also commonly the minimum qualifying limit insurers require before you can add an umbrella policy on top.
The Recommended Tier: 250/500/100 Plus Umbrella
Financial advisors generally recommend 250/500/100 or higher for most middle-income households. Going from state-minimum to 250/500/100 typically costs an additional $200-$400 per year — a modest premium increase for a 5-10x jump in protection on one of the highest-impact financial risks an average household carries (ReadMyPolicy).
An umbrella policy sits on top of your underlying auto liability coverage and adds another $1-5 million in protection, typically costing $200-$500 per year. To qualify, insurers usually require underlying auto liability limits of at least $250,000-$300,000 — which is exactly why raising your base auto coverage to that tier is the prerequisite step before adding an umbrella policy.
A Practical Rule of Thumb
Supplement your state’s required minimum with enough additional coverage to roughly match your net worth — savings, investments, home equity, and other assets that could be pursued in a lawsuit following an at-fault accident that exceeds your coverage. The legal minimum keeps you driving legally; the right coverage protects what you’ve actually built.
Beyond liability, most drivers should also weigh adding collision and comprehensive coverage — together often called “full coverage” — which most drivers pay $1,000-$2,000 per year for. If you’re financing or leasing a vehicle, your lender likely requires both full coverage and liability limits around 100/300/100 as a condition of the loan.
Frequently Asked Questions
Do I need full coverage on an older, paid-off car?
Not necessarily — once a vehicle’s value drops low enough, collision and comprehensive payouts (capped at the car’s actual cash value) may not justify the premium cost. Liability coverage remains necessary regardless of the vehicle’s age or value, since that protects against what you owe others, not your own car.
How quickly can I actually get higher coverage if I decide to raise my limits?
Very quickly — see our guide on how long it takes to get car insurance, since adjusting existing coverage or binding a new policy at higher limits typically takes minutes to a few hours, not days.
Does my credit score affect how much coverage I need?
No — credit score can affect your premium in states that allow credit-based pricing, but it has no bearing on how much coverage is actually appropriate for your assets and risk exposure.
Is it worth shopping around before raising my limits?
Generally yes — premium costs for the same coverage tier can vary meaningfully between insurers, so comparing quotes before committing to a higher limit ensures you’re not overpaying for the added protection.
The Bottom Line
State minimum liability coverage keeps you legal but leaves a real financial gap that a single serious accident can expose. 100/300/100 is the practical real-world floor most people should carry, and 250/500/100 paired with an umbrella policy is the recommended tier once your assets are worth protecting. The incremental cost to move up a tier is modest relative to the protection it adds.
Not sure what coverage level fits your situation, or ready to update your policy? Contact San Diego Bumper and Collision for guidance, and see our guide on the best time to buy a car if insurance is part of a broader purchase decision.
