What to expect when you rent a car at IAH
Houston's George Bush Intercontinental Airport (IAH) has rental car counters from major companies in the baggage claim area, plus an off-site facility for budget operators. You'll pick up your car after collecting your luggage, or you can use a shuttle to reach off-site locations. Most companies charge a daily rate plus taxes and fees specific to Harris County and the City of Houston — these add roughly 20 to 25 percent to your base rate, though the exact amount depends on the rental company and your rental dates.
The on-airport counters are faster if you have a reservation, but expect lines during peak arrival times (early morning, evening, and weekends). If you're renting from an off-site location, allow extra time for the shuttle ride — typically 10 to 15 minutes each way.
Key Takeaways
- Major rental companies operate counters in IAH's baggage claim area, while budget companies use off-site facilities reachable by shuttle.
- You'll need a valid driver's license, a credit card in your name, and proof of insurance before you can pick up a car.
- Houston and Harris County add local taxes and facility fees that typically increase your rental cost by 20 to 25 percent above the quoted daily rate.
- Reserving in advance locks in a rate and vehicle type, but you can often find same-day deals at the counter if you're flexible on car size.
- Damage waivers and additional insurance offered at the counter are usually redundant if your personal auto policy or credit card already covers rentals.
On-airport rental locations and companies
The main rental car facility at IAH sits in the baggage claim area on the ground level. Hertz, Enterprise, Avis, Budget, and National all have counters there. Alamo and Fox also operate at IAH but may have separate locations within the same facility. These are the companies most travelers recognize, and they typically have the widest selection of vehicle sizes.
If you're looking for lower daily rates, companies like Turo, Zipcar, or regional operators may have off-site lots served by shuttle buses. The shuttle pickup is usually near the rental car facility or marked clearly in baggage claim. Off-site rentals take longer overall but can save money if you're comfortable with a 15-minute shuttle ride.
Documents and requirements you'll need
Bring your valid driver's license — a U.S. state license, military ID, or passport with a valid visa all work. You'll also need a credit card in your own name; debit cards are rarely accepted as the primary payment method, though some companies may accept them with a large deposit. The credit card is used to hold a security deposit, not charged unless there's damage or extra fees.
Proof of insurance is optional but useful. If you have your own auto insurance policy, bring the declaration page or a digital copy showing your coverage limits. If your credit card offers rental car coverage (many premium cards do), bring that information too. At the counter, you can decline the rental company's damage waiver if your existing coverage is sufficient, which saves money.
Taxes, fees, and what they cost
IAH rental rates include several local charges beyond the daily rate. Harris County adds a 10 percent surcharge on all car rentals. The City of Houston adds a 2 percent tax. On top of that, the airport facility fee (charged by IAH itself) typically runs 11 to 12 percent of the rental cost. Together, these add roughly 23 to 24 percent to your quoted daily rate.
A few examples: if you're quoted $40 per day, expect to pay roughly $49 to $50 per day after taxes and fees. A $60 per day rate becomes about $74 to $75. These percentages are consistent across all rental companies at IAH, so shopping by company won't reduce the local charges — only the base daily rate matters.
Some companies also charge separately for fuel, GPS, or additional drivers. If you decline the rental company's fuel option, you'll need to return the car with a full tank or pay their per-gallon rate, which is usually higher than a gas station. Check your reservation details or ask at the counter what's included.
Reserving ahead versus renting at the counter
A reservation locks in your rate and guarantees a vehicle type (compact, midsize, SUV, etc.), which matters if you need a specific size. Booking online or by phone usually shows you the final price including taxes and fees, so there are no surprises at pickup. Most companies honor reservations for at least 24 hours after your quoted pickup time, though policies vary.
Walk-up rentals at the counter can sometimes be cheaper if the company has excess inventory, but you risk higher rates during busy travel periods. You also won't know your final price until you're at the counter, and the vehicle type may not match what you wanted. If you're flexible and traveling during a slow period, counter shopping can work; otherwise, reserve ahead.
Insurance and damage waivers at pickup
The rental company will offer you a damage waiver (called a Loss Damage Waiver or LDW) at the counter. This covers collision and theft damage to the rental car. If you decline it, you're responsible for any damage up to the car's full value. The waiver typically costs $15 to $25 per day, which adds up quickly on a week-long rental.
Before you buy the waiver, check whether your personal auto insurance covers rental cars — most policies do, though some exclude certain vehicle types or geographic areas. If your credit card offers rental coverage, that's often a second layer of protection. Read the terms carefully: some credit card coverage requires you to decline the rental company's waiver, while others work alongside it. If you're already covered, declining the waiver saves significant money.
Returning your car and avoiding extra charges
Return the car to the same location where you picked it up unless you reserved a one-way rental to another city. Fuel should be full (or at the level you rented it, if you chose the "return as-is" option). Return during business hours to avoid after-hours fees, which some companies charge if you drop off outside their counter hours.
Inspect the car for damage before you leave the lot — take photos of any dents, scratches, or stains and point them out to the attendant. If damage is noted on your rental agreement at pickup, you won't be charged for it later. Keep your rental agreement and receipt until after your credit card statement posts, in case the company charges you for damage you didn't cause.
Frequently Asked Questions
Can I rent a car if I'm under 25?
Yes, but most companies charge a young driver fee (typically $15 to $25 per day) for drivers under 25. Some companies have a minimum age of 21; others require 25. Check the rental company's policy when you reserve, as the fee varies widely and can double your daily cost.
What happens if I return the car late?
Late return fees vary by company but typically run $25 to $50 per hour or a partial day charge. If you're running late, call the rental company as soon as you know — some will waive or reduce the fee if you notify them in advance. Always check your rental agreement for the exact policy.
Do I need an international driver's license if I'm visiting from another country?
No, but you'll need a valid passport and a driver's license from your home country. Some companies require an International Driving Permit (IDP) in addition to your home license, though it's not legally required in Texas. Ask the rental company when you reserve if you're unsure.
Can I add another driver at the counter?
Yes, but most companies charge $10 to $15 per additional driver per day. The additional driver must have a valid license and be present at pickup. It's usually cheaper to add them when you reserve online, so check your reservation to see if you can modify it before you arrive.
What if the car breaks down while I'm driving?
Call the rental company's roadside information number — it's on your rental agreement. They'll arrange a tow or send a replacement vehicle. You're not responsible for mechanical failures that occur during normal use, but you are responsible for damage caused by misuse or neglect.