The deposit, and why your card needs headroom

The deposit is the step that stops more rentals at the counter than paperwork does. It is not a charge and not a fee: an amount is held on a credit card in the main driver’s name for the duration of the rental, and it is unavailable to you until the company releases it and your bank processes that release. If the card has no room for it, you do not get the car — booking confirmation or not.

What is actually held

The size depends on the vehicle rather than on the length of the rental, and it exists to cover the excess on the damage waiver. That is the link between this page and the excess and CDW page: a rental with a lower excess normally has a smaller hold behind it, and buying cover that reduces the excess can reduce what has to be blocked.

Three conditions come with it almost everywhere:

A credit card, not a debit card. Debit cards do not support the hold mechanism in the way rental companies require, and they are refused far more often than travelers expect.

In the main driver’s name. Not a partner’s card, not a company card belonging to someone who is not on the agreement. The name on the card, the name on the license and the name on the agreement have to be the same person.

Enough available credit. Not enough balance — enough available credit, after everything else the card is carrying on that trip.

The release

The company releases the hold when the car is returned undamaged. When the money becomes usable again is between you and your bank, and a couple of weeks is normal rather than a sign of a problem.

Two things worth doing at drop-off: get something in writing that the car was returned in order, and check the agreement for what happens if damage is found after you leave. A hold that is quietly converted into a charge weeks later is the dispute that is hardest to win from another country.

What the local operators do instead

Phuket has a large local rental market that works differently: cash deposits, small deposits, or no deposit at all, with the car delivered to your hotel. For visitors without a suitable credit card, this is the practical answer rather than a compromise.

What you are trading:

Thinner cover. Read what the included insurance actually covers before assuming it matches the international product.

A different dispute process. With a smaller operator, a disagreement over damage is a conversation rather than a claims department — better with a reasonable counterparty, worse with an unreasonable one.

Passport as deposit — refuse this one. Some operators ask to hold a passport instead of money. It is common, and it is a bad idea: the passport is what you need for a hospital, a bank and your flight home, and recovering it during an argument about a scratch is a weak position. Offer cash or a photocopy, or rent elsewhere.

Before you book

Check the card limit against the hold, not against the rental price. The rental costs one thing; the hold is separate and larger.

Take a second card. Cards get blocked by fraud checks abroad, and a rental counter is a poor place to discover it. The money page covers the rest of that arithmetic.

Ask what the hold will be for the specific car, not for the category. Upgrades at the counter change it.

Confirm who is driving. Adding a second driver later is an amendment; adding one at the counter with the wrong card is a problem.

The fuel policy is a second deposit

Almost every agreement handles fuel one of two ways, and one of them puts more of your money on hold.

Full to full. You collect a full tank and bring it back full. Nothing extra is held for fuel, and the only risk is forgetting the last filling station before the airport.

Prepaid tank. You pay for a tank at the counter and return the car however empty. It is sold as convenience, it is priced above the pump, and whatever you do not burn is a gift to the company.

Ask which policy applies before signing, and photograph the fuel gauge at pickup along with the bodywork. A dispute about a quarter of a tank is small and irritating; a photograph ends it.

Age, extra drivers and other conditions that move the number

Young drivers. Below an age threshold, many companies add a surcharge and raise the deposit. It is in the terms rather than in the headline price.

Extra drivers. Each person who will drive goes on the agreement, and adding one can change the hold. Doing it at the counter with the wrong card is the version that fails.

Vehicle class. A larger or newer car carries a bigger deposit, so an upgrade offered at the desk is not only a change of price.

Long rentals. Monthly deals with local operators often work on a different arrangement entirely — a smaller deposit taken in cash, or none, with the trade-offs described above.

If a charge appears after you get home

Two things make this arguable rather than hopeless.

The photographs from pickup and drop-off. A charge for damage that is visible in your own pickup photographs is a charge that gets reversed; a charge for damage that is in neither set is a much harder conversation.

The order of steps. Ask the company in writing for the damage report and the repair invoice before disputing anything with the bank. A card dispute raised without those documents is usually decided in the company’s favor, because they can produce paperwork and you cannot.

If the rental was booked through a platform rather than directly, raise it with the platform at the same time: they are the ones with commercial leverage over the operator, and it costs you nothing to use it.

At the counter

Photograph the car from every angle before leaving, including existing damage, and film a slow walk around it. Damage disputes are what deposits exist for, and photographs settle them faster than any argument about what the diagram on the agreement showed.

Then read the excess figure on the agreement you are signing — that number, not the one in the booking email, is what the hold is protecting. Which is the subject of the rental insurance page.