The deposit is a hold, not a charge
When picking up a rental car, most companies place a hold on a credit card rather than taking a payment outright. That hold, sometimes called a security deposit, covers the excess the driver would be liable for if the car is returned damaged. It is usually released after the car is returned in good condition, but the release itself can take anywhere from a few days to a few weeks to disappear from a card statement, depending on the bank rather than the rental company. A debit card is often not accepted for this hold at all, and where it is, the amount available on it is reduced for the length of the rental, which is worth planning around before travelling.
Basic cover usually still leaves an excess
A collision damage waiver included in the rental price typically reduces the driver's liability rather than removing it. What is left over is the excess, an amount the driver remains responsible for if the car is damaged, and this is exactly the figure the deposit hold is usually set to cover. Separate excess reduction insurance, bought from an independent provider rather than at the rental desk, often costs noticeably less for the same reduction in liability, though it works as a reimbursement after the fact rather than avoiding the deposit hold itself at pickup.
Fuel policies change the real cost more than the daily rate
Three fuel arrangements are common. Full-to-full means collecting the car with a full tank and returning it full, which is generally the option that costs the least overall if the return refill is timed properly. Full-to-empty means collecting it full and being allowed, in principle, to return it empty, though in practice this rarely lines up exactly and unused fuel is not refunded. Prepaid fuel means paying for a full tank at pickup regardless of how much is actually used, which is convenient but usually more expensive unless the tank is driven close to empty. Reading which policy applies, and where the nearest fuel station to the return point is, avoids both an unnecessary refuel charge and paying for fuel never used.
Where EU, UK and US rules differ a little
Car rental across all three markets is generally excluded from the standard 14-day right of withdrawal that applies to most other online purchases, since it is a date-specific service. Beyond that, requirements around minimum driver age, additional driver fees, and what documentation is accepted at the desk vary by country and by rental location rather than following one shared rule, so the terms shown for the specific pickup location are what actually apply, not general assumptions carried over from a previous rental elsewhere.
Checking the total before booking
The headline daily rate rarely reflects the full cost once a fuel policy, an additional driver, and any excess reduction cover are added. It is worth totalling these before comparing two offers, since a lower daily rate with an expensive fuel policy can end up costing more than a slightly higher rate with full-to-full fuel included. Some car hire comparison sites list a voucher code or coupon code that applies to the booking fee or to add-on insurance, and it is worth checking a current listing on daily-coupons.info before paying, alongside working out the total cost rather than in place of it. Listed codes are checked several times a day, as explained on our FAQ page.
Points worth checking before pickup
- Confirm whether a credit card is required for the deposit hold, and how much is blocked.
- Check what excess remains after the included cover, and compare it with independent excess reduction insurance.
- Note the exact fuel policy and the location of the nearest return fuel station.
- Confirm any minimum driver age and additional driver fees for the specific pickup location.
Frequently asked questions
Can I use a debit card for the rental car deposit?
Sometimes, but not always, and where it is accepted the deposit amount is typically blocked from the account for the rental period. Many rental companies require a credit card specifically, so it is worth checking the requirement for the exact location before travelling.
Is full-to-full always the cheapest fuel policy?
It is usually the most cost-effective option if the return refill is timed close to the return point, since it avoids both prepaying for unused fuel and refuel service charges. It requires a bit more planning around where to fill up before drop-off.
Does the included collision damage waiver mean I have no financial risk?
Not entirely. A basic waiver usually reduces liability down to an excess amount rather than removing it. That excess is what a deposit hold typically covers and what separate excess reduction insurance is designed to reimburse.
