What you need to rent a car and how the process works
To rent a car, you need a valid driver's license, a credit card in your name, and proof of insurance. Most rental companies require you to be at least 21 years old, though some charge extra fees for drivers under 25. You can book online, by phone, or in person at the rental location. The rental agreement you sign at pickup spells out the daily rate, mileage limits (if any), fuel policy, and damage liability — read it before you drive off the lot.
The rental process itself takes 15 to 30 minutes at the counter. The agent will check your license, run a credit card authorization (not a charge yet), inspect the car for existing damage, and walk you through the fuel and return policy. You'll receive keys, the rental agreement, and a map of where to return the vehicle. Most companies require you to return the car with a full tank; if you don't, they charge a refueling fee that is usually higher than filling it yourself.
Key Takeaways
- You need a valid driver's license, a credit card, and proof of insurance to rent a car; some companies require you to be 25 or older to avoid extra fees.
- Daily rental rates vary widely by location, season, and car type — booking in advance and comparing companies can save 20 to 40 percent.
- The rental agreement includes mileage limits, fuel policy, and damage liability; read it before you leave the counter because changes are hard to make later.
- Return the car on time and with a full tank to avoid late fees and refueling charges, which can add $50 to $150 to your bill.
How daily rates are set and what affects the price you pay
Rental companies price cars based on demand, location, and how far in advance you book. A compact car in a small town might cost $35 a day, while the same car in a major city during peak season could run $80 or more. Booking a week ahead usually costs less than booking the day before. Weekend rates are often higher than weekday rates at the same location.
The quoted daily rate does not include taxes, airport fees, or optional add-ons. If you rent from an airport location, expect a surcharge of 10 to 15 percent on top of the base rate. Insurance, GPS rental, and fuel prepay options are sold separately and can easily add $15 to $30 per day. Always ask what is included in the quoted price before you commit.
Insurance and liability: what your own policy covers and what the rental company offers
Your personal auto insurance may already cover rental cars, so check your policy before you buy the rental company's coverage. If your policy includes rental coverage, you are protected against collision and theft the same way you would be in your own car. If you do not have personal auto insurance, or if your policy excludes rentals, you will need to buy coverage from the rental company.
Rental companies offer two main types of coverage. Collision Damage Waiver (CDW) covers damage to the rental car from an accident; it typically costs $15 to $25 per day and comes with a deductible of $500 to $1,500. Liability coverage covers damage you cause to other people or property; it is required by law and is usually included in the rental rate, but the limits may be lower than your personal policy. If you decline the rental company's CDW and your personal insurance does not cover rentals, you are personally liable for any damage — which can cost thousands.
Mileage limits and fuel policies that can add hidden costs
Some rental companies charge a flat daily rate with unlimited mileage; others charge a lower daily rate but add a per-mile fee after a certain threshold. A car rented for $40 a day with unlimited mileage is a better deal than one at $35 a day with 100 free miles and $0.25 per mile after that — if you drive 200 miles, the second option costs $60. Always ask the agent how many free miles come with your rental and what the per-mile charge is if you exceed them.
Fuel policy is equally important. Most companies require you to return the car with a full tank. If you do not, they charge you for the missing fuel at a rate that is usually $5 to $8 per gallon — roughly double what you would pay at a gas station. Some companies offer a "fuel prepay" option where you pay for a full tank upfront at a lower per-gallon rate; this makes sense only if you know you will return the car nearly empty. The safest approach is to fill the tank yourself at a station near the rental location before you return the car.
Late return fees and what happens if you keep the car longer than planned
Rental agreements specify an exact return time — usually the same time you picked up the car. If you return the car even 30 minutes late, most companies charge a late fee of $25 to $50 or charge you for an extra full day. Some companies are stricter than others; check your agreement for the grace period (if any) and the late fee amount before you leave the lot.
If you realize you need the car longer, call the rental company as soon as possible. They may be able to extend your rental at the same rate or a slightly higher rate, depending on demand. Extending by phone is almost always cheaper than returning late and paying the late fee. If you cannot reach the company and return the car late, you will be charged; you can dispute the fee later, but the charge will appear on your credit card first.
Damage claims and how to protect yourself at pickup and return
Before you drive away, walk around the car with the rental agent and point out any existing damage — dents, scratches, stains, or mechanical issues. The agent should note these on the rental agreement. Take photos or video of the car's condition with your phone; this protects you if the company later claims you caused damage that was already there. Do the same inspection when you return the car, and ask the agent to note the condition in writing.
If the company later charges you for damage you did not cause, you have a stronger case if you have photos and a written note from the agent at pickup. Keep your rental agreement and any photos for at least 30 days after you return the car, because damage claims sometimes appear on your credit card statement weeks later. If you are charged unfairly, contact your credit card company and dispute the charge; provide your photos and the agent's notes as evidence.
Booking strategies that lower your total cost
Rental rates change daily based on demand, so booking a week or two in advance usually saves money compared to booking the day before. However, if rates drop after you book, many companies let you rebook at the lower rate without penalty — check the terms of your reservation. Booking directly with the rental company's website sometimes offers better rates than third-party booking sites, and you may earn loyalty rewards.
Renting from a location away from the airport can save 10 to 15 percent, since airport surcharges are built into the rate. If you are flying into a city and staying for several days, renting from a downtown location or a neighborhood branch may be cheaper than renting at the airport, even after accounting for a taxi or rideshare to get there. Compare the total cost — rental rate plus transportation to the off-airport location — before you decide.
Frequently Asked Questions
Do I need a credit card to rent a car?
Yes. Rental companies require a credit card in your name for the authorization hold, which ties up part of your credit limit until you return the car. Debit cards are rarely accepted because the company cannot place a hold on them the same way. The hold is released when you return the car and the final charges are processed, usually within a few days.
What happens if I get into an accident while renting?
Contact the rental company when ready and report the accident. If you have collision coverage through your personal insurance or the rental company's CDW, the damage is covered (minus your deductible). If you have no coverage, you are liable for repair costs, which can be thousands of dollars. Always exchange information with the other driver and file a police report if there are injuries.
Can I rent a car if I have a suspended or expired license?
No. Your driver's license must be valid and current. A suspended license disqualifies you entirely. An expired license may be accepted if it expired recently and you have a renewal notice, but policies vary by company and location — call ahead to ask.
What if I need to cancel my reservation?
Cancellation policies vary. Some companies offer free cancellation up to 24 or 48 hours before pickup; others charge a cancellation fee. Check your confirmation email for the cancellation important date and fee. If you booked through a third-party site, read that site's cancellation policy as well, because it may differ from the rental company's policy.
Can I rent a car if I am under 25?
Yes, but most companies charge an extra daily fee (typically $15 to $25) for drivers under 25. Some companies have a minimum age of 21; a few require you to be 25 with no surcharge. Check the rental company's age policy when you book, because the surcharge can add $100 or more to a week-long rental.