Liability insurance is required for rental cars in every state except New Hampshire, and rental companies satisfy that requirement by carrying state-minimum coverage on their fleet. The question most renters actually need answered is whether that built-in minimum is enough, and in most situations it isn’t. A federal law called the Graves Amendment pushes nearly all accident liability onto you, the driver, rather than the company that owns the car. So while you won’t be turned away at the counter for lacking your own policy, you can still walk out of the lot badly underprotected.
What State Law Requires on a Rental Car
Almost every state sets a minimum level of liability coverage that must be in force on any vehicle driven on public roads. The most common floor is 25/50/25: $25,000 per injured person, $50,000 total per accident for injuries, and $25,000 for property damage. Several states have recently moved higher. California raised its minimums to 30/60/15 effective January 2025. Virginia and North Carolina moved to 50/100/25 or higher. Utah increased to 30/65/25.
Rental companies register their fleets with at least enough coverage to meet each state’s requirement. That satisfies the law. It does not necessarily protect you. In a serious crash involving hospitalization or multiple vehicles, $25,000 in bodily injury coverage per person can be exhausted before the first surgery bill is paid. Anything above the coverage in place is your personal responsibility.
Why the Liability Lands on You, Not the Rental Company
Before 2005, several states held rental car companies vicariously liable for accidents caused by their renters simply because the company owned the vehicle. Federal law changed that. Under 49 U.S.C. ยง 30106, a rental company cannot be held liable solely because it owns the vehicle, as long as the company is in the business of renting cars and was not itself negligent or engaged in criminal wrongdoing.1Office of the Law Revision Counsel. 49 USC 30106 – Rented or Leased Motor Vehicle Safety and Responsibility
If you cause an accident in a rental, the injured party’s claim lands on you and your insurance. The Graves Amendment preserves each state’s authority to impose financial responsibility requirements on vehicle owners, so rental companies still have to carry state-minimum coverage.1Office of the Law Revision Counsel. 49 USC 30106 – Rented or Leased Motor Vehicle Safety and Responsibility But the company’s exposure as an owner is capped at those minimums in most situations, and the rest falls to the driver.
New York is a partial exception. Its Vehicle and Traffic Law still imposes liability on vehicle owners for negligent operation by anyone driving with permission, which creates broader exposure for rental companies there. Across most of the country, the renter is the primary target for any claim.
What’s Actually Included in Your Rental Rate
What you get for “free” with your rental varies by state. In New York, rental companies provide liability coverage up to the state’s financial responsibility limits at no extra charge. In Missouri and Utah, the company provides minimum coverage only if you don’t carry a personal auto policy. In California and Texas, automobile liability protection is not included in the base rental rate at all. You either bring your own coverage or buy it from the company.
Even in states where the rental company includes minimum liability, that coverage is almost always secondary to your personal auto insurance. The rental agreement’s indemnification language typically requires your own policy to pay first. The company’s coverage activates only after your personal limits are fully exhausted. If your personal policy has a $25,000 bodily injury limit and the accident generates $40,000 in medical bills, your insurer pays $25,000 and the rental company’s secondary coverage may handle the remaining $15,000 only if it falls within the state minimum limits.
Read the indemnification and “other insurance” clauses in any rental agreement before signing. They tell you whether the company’s coverage is primary, secondary, or nonexistent in your situation.
How Your Personal Auto Policy Applies
Most personal auto policies extend liability coverage to rental cars used for personal trips. Before picking up a rental, pull the declarations page of your policy. It lists your specific bodily injury and property damage limits and shows whether you have coverage for vehicles you don’t own. Look for language about “non-owned vehicle coverage” or “temporary substitute vehicle” provisions.
Pay attention to the numbers. A policy with state minimums of 25/50/25 caps property damage at $25,000. One rear-end collision involving a luxury SUV can exceed that. Bodily injury limits can fall short just as quickly if the other driver or passengers need extended medical care. Knowing your limits before you reach the counter lets you make a rational decision about whether to buy more coverage from the rental company.
One area where personal policies routinely fail renters is business use. If you’re renting for a work trip, conference, or client meeting, your personal auto policy may exclude coverage entirely. The insurer treats business driving as a different risk class, and the exclusion often applies even if you also use the car for personal errands during the same trip. Call your insurance agent and ask specifically whether your policy covers rentals used for business purposes. If it doesn’t, you either need supplemental coverage from the rental company or a commercial policy endorsement.
Why Credit Card Coverage Doesn’t Count as Liability
Credit card rental benefits are the most misunderstood protection in the rental ecosystem. Most premium cards offer coverage for rental vehicles, but that coverage is almost always a collision damage waiver, not liability insurance. It pays to repair or replace the rental car if you damage or total it. It does not pay a dime toward another driver’s medical bills, their vehicle repairs, or a lawsuit filed against you.
Even the damage-waiver benefit has limits. Most credit card coverage is secondary to your personal auto policy, meaning the card issuer only pays after your own insurer handles its share. Some cards offer primary coverage, particularly on international rentals, but you need to check the Guide to Benefits document for your specific card. Credit card coverage also typically excludes trucks, luxury vehicles, and rentals exceeding a certain number of consecutive days.
A credit card can protect you from the rental company’s damage charges. It will not protect you from a third-party injury lawsuit. Those are the claims that get into six figures.
Supplemental Liability Insurance at the Counter
The rental counter sells two main products that renters constantly confuse. Collision Damage Waiver (CDW) or Loss Damage Waiver (LDW) covers damage to the rental car itself. Supplemental Liability Insurance (SLI) or Additional Liability Insurance (ALI) is the one that answers the liability question: it covers claims by third parties, including medical bills for people you injure and damage to their vehicles or property, by increasing your liability limits well above the state-mandated minimum. Avis’s Additional Liability Insurance, for example, provides up to $500,000 in third-party coverage.2Avis Rent A Car. Protections and Coverages Daily fees for SLI at major companies currently run roughly $13 to $17, though rates vary by location and vehicle class.
These two products protect against entirely different risks. Having CDW gives you no third-party protection. Having SLI gives you no protection for damage to the rental car. When the agent asks you to accept or decline each product, you’re making two separate decisions. Declining SLI is a bet that your existing liability limits are high enough to handle a serious at-fault accident.
If You Don’t Own a Car or Carry Personal Insurance
If you don’t own a vehicle and have no personal auto policy, you’re starting from zero when you pick up a rental. The rental company provides state-minimum liability in most states, but some states don’t require the company to include it in the rate, and state minimums alone are thin coverage for anything beyond a fender bender.
Two options exist beyond buying SLI at the counter:
- A non-owner auto insurance policy is a standalone liability policy for people who drive but don’t own a vehicle. It covers bodily injury and property damage you cause while driving a rental, borrowed, or shared car. It does not cover damage to the rental vehicle itself. Non-owner policies generally cost less than standard auto insurance and can be purchased from most major insurers. The coverage acts as secondary insurance, paying after any primary coverage on the vehicle is exhausted.3GEICO. Understanding Non-Owner Car Insurance – Who Needs It and What It Covers
- Buying SLI or ALI from the rental company increases your liability limits for the duration of the rental. This is the simplest option for occasional renters who don’t want to maintain a year-round policy.
If you rent frequently without owning a car, a non-owner policy is almost certainly cheaper over time than paying the daily SLI fee on every rental. If you rent once or twice a year, buying SLI at the counter may be more practical.
Visitors driving on a foreign license face the same requirement: the state’s minimum liability must be in force on any rental. Most international travelers don’t carry a U.S. auto policy, which makes the rental company’s included coverage and any SLI their primary protection. Purchasing SLI directly from the rental company is the simplest path for short visits. International students living in the U.S. longer-term who drive regularly may want to look at a non-owner or standard auto policy, since per-rental SLI costs add up quickly.
Where an Umbrella Policy Fits
A personal umbrella policy provides an additional layer of liability protection sitting on top of your auto and homeowners coverage. If you cause a rental car accident and the damages exceed your auto policy’s limits, the umbrella picks up the excess, up to whatever limit you’ve chosen, commonly $1 million or more.4GEICO. Umbrella Insurance – How it Works and What it Covers
Umbrella policies require minimum underlying liability limits on your auto policy before they’ll activate. A typical threshold is $300,000 per person in bodily injury coverage and $100,000 in property damage on the auto policy.4GEICO. Umbrella Insurance – How it Works and What it Covers If your auto policy only carries state minimums, the umbrella insurer may deny the claim because you didn’t maintain the required underlying limits. Verify that your auto policy meets the umbrella’s threshold before assuming it will provide backup on a rental.
What Can Void the Coverage You Think You Have
Both the rental company’s included coverage and any SLI you purchase contain exclusions. The rental agreement spells these out, and rental companies enforce them aggressively.
- Driving under the influence of alcohol, drugs, or even legally prescribed medication that affects driving ability voids coverage.
- Letting an unauthorized driver, someone not listed on the rental agreement, operate the vehicle typically voids the rental company’s coverage and any SLI.
- Taking the vehicle off-road or into restricted areas, including unpaved roads, beaches, and construction sites, violates most agreements.
- Using the rental for commercial activity such as delivery driving, ride-hailing, or courier work voids coverage designed for personal passenger use.
- Crossing international borders without prior written permission can void all coverage.
- Towing another vehicle or exceeding the car’s passenger or cargo capacity falls outside normal use.
Reckless driving, racing, and intentional illegal acts also void coverage. The pattern is consistent: coverage is priced for normal, lawful passenger use, and anything outside that gives the insurer grounds to deny the claim entirely.
Before You Get to the Counter
The rental counter is designed to move fast, which works against good decision-making. Do the work in advance. Pull your auto policy declarations page and confirm your liability limits and whether non-owned vehicles are covered. Check your credit card’s Guide to Benefits and recognize that it almost certainly doesn’t cover liability. If you carry an umbrella policy, confirm your auto policy meets its underlying limit requirements.
At the counter, the agent will ask you to accept or decline CDW/LDW and SLI as separate line items. Declining CDW means relying on your personal policy or credit card for damage to the rental car. Declining SLI means relying on your personal liability limits for third-party claims. Treat them as independent decisions, because that’s what they are.