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Rental contracts pack coverage, fees and policies into a page of fine print. This glossary defines the terms so you can read them before the agent slides the clipboard across the counter.
A rental contract compresses a lot of fine print into a page or two, and the agent moves through it quickly. Knowing the vocabulary ahead of time makes it easier to compare offers and to catch charges that never appeared in the advertised rate. Decide on protection before you arrive: our guide to rental car insurance or your own auto policy walks through that choice, and our timeline from pickup to return shows where each charge attaches. If a damage bill arrives anyway, see rental car damage myths.
Coverage Terms
Collision damage waiver (CDW) and loss damage waiver (LDW). Two names for the same option, a waiver rather than an insurance policy. It removes or limits what you owe if the rental car is damaged or stolen, as long as you follow the rental agreement, and it usually covers loss of use charges. In most states it cannot be canceled once it is on the agreement.
Excess (deductible). The part of a damage claim a waiver can still leave you responsible for, which can run from hundreds to thousands of dollars. A waiver can also be voided if damage happens while you are driving impaired or otherwise breaking the agreement.
Supplemental liability insurance (SLI). Coverage for injuries and property damage you cause to other people in an at-fault accident. Limits typically range from $300,000 to $2 million depending on the company and location. Most states require rental companies to carry some statutory liability coverage, though a few, including California, do not require it. SLI generally pays before your own policy, sparing you a claim on your personal insurance. It does not cover damage to the rental car or your own injuries.
Personal accident insurance (PAI). An optional product that pays certain medical, death and dismemberment benefits to the driver and passengers after an accident. It is often sold alongside personal effects coverage, which pays for belongings lost from the rental car. Travelers whose health insurance or auto policy includes personal injury protection may already be covered for the same risks.
Fee Terms
One-way fee. Charged when you pick up in one place and drop off in another, to cover the cost of repositioning the car. Amounts vary by company, distance and route, so ask for the figure before you book.
Airport concession fee. A surcharge many airport locations add, tied to what the operator pays the airport to operate on-site. It is one reason the Federal Trade Commission (FTC) advises comparing total prices with taxes and fees included, not the advertised base rate.
Young driver surcharge. An added daily amount for renters younger than the company’s standard age threshold. Cutoffs and amounts vary by company and location, so price it into the total before you commit.
Prepaid reservation. A rate paid in full at booking. It can carry cancellation fees no matter when you cancel, while standard rates often allow free changes if you cancel ahead, sometimes as much as a week before pickup.
Mileage Terms
Unlimited miles. A rate with no cap on how far you drive. Confirm the words appear on your contract rather than assuming the advertised rate includes them.
Mileage cap. A limit on distance after which per-mile charges begin. If your rate has one, the contract should state both the limit and the overage rate.
Out-of-state limits. Geographic restrictions on where you may take the car. Crossing a line the contract draws can affect more than the price, so check the terms if your route leaves the state.
Damage Terms
Loss of use. A charge for the rental income the company says it lost while a damaged car was out of service, usually a daily rate multiplied by the days the vehicle is down. Higher-value vehicles can carry higher daily rates, and some agreements add taxes on top.
Administrative fee. A paperwork charge the company may add after an incident, separate from repairs and loss of use. It can appear on the bill even when the damage itself is covered.
Diminished value. Also called diminution in value, a charge meant to compensate the company for the car’s lower resale worth after repairs. Some agreements list it separately, so do not assume loss of use is the only extra.
Heads up
Loss of use, administrative fees and diminished value are not repair costs, and they can be charged even when your coverage looks complete. If another driver was at fault, their insurer may ultimately pay, but the charge may hit your card first.
Fuel and Toll Terms
Prepaid fuel. An option to pay for a full tank at pickup and return the car empty. You are billed for the fuel whether or not you use it, so compare it with refilling on your own before the return.
Toll program. The company’s arrangement for paying tolls on your route. Ask how it bills tolls, what fees apply and whether your own transponder works in the car.
Contract Terms
Authorized driver. Every person the contract names as allowed to drive. Liability products such as SLI extend to authorized drivers, so an unlisted driver can leave gaps in coverage.
Late return grace period. The buffer after your scheduled return time before extra charges begin. The length varies by company and location, so ask what applies to your agreement.
Cross-border rules. The terms governing whether you may drive the rental into another country. They matter especially outside the U.S. and Canada, where CDW-type protection works differently.
Driving record check. Many companies screen renters’ driving records and can refuse to hand over the car, even with a confirmed reservation, if recent violations show up. Ask about the policy before pickup day.
Before you go
- CDW and LDW are two names for the same waiver, not an insurance policy: it limits what you owe if the rental car is damaged or stolen, subject to the contract’s terms.
- Supplemental liability insurance covers injuries and property damage you cause to others, with limits that can reach $1 million or $2 million; it does not cover damage to the rental car.
- Loss of use, administrative fees and diminished value can be charged after an incident even when you believe your coverage is full.
- Prepaid reservations can carry cancellation fees no matter when you cancel, and many rental companies check driving records before handing over the keys.
- Newer rentals with infotainment systems can store your contacts, messages and locations; delete your data from the system before returning the car.
Travelers also ask
Q: Is a collision damage waiver the same as insurance?
A: No. It is a waiver that reduces or removes your financial responsibility for damage to or theft of the rental car, as long as you follow the rental agreement. Even then, some agreements leave an excess, which can run from hundreds to thousands of dollars.
Q: Does the waiver pay for the other car in an accident?
A: Generally no. Damage waivers apply to the rental car itself. Liability for other people’s injuries and property is handled separately, through the statutory minimum coverage most states require, supplemental liability insurance or your own policy.
Q: What is loss of use?
A: It is a charge for the rental income the company says it lost while a damaged car was out of service, usually a daily rate multiplied by the days the vehicle is down. It can appear even when the repair costs themselves are covered.
Q: Can I cancel a loss damage waiver after adding it?
A: In most states, no. Once the waiver is on the rental agreement it must remain, though you can end the rental early, sometimes at a different daily rate.
Fees, processing times and agency rules change, and airline and hotel policies vary. This guide is general information for travelers in the U.S.; confirm the current rules with the agency, airline or hotel before you travel.
