Quick Summary:
- A pre-authorisation is usually not a charge, but may be FX-tagged.
- Many UK issuers apply FX fees when the merchant is overseas.
- FX fees usually post only if the hold converts into a charge.
- Ask to bill in USD, then monitor pending and posted entries.
When you pick up a car hire in the United Estates, the rental company commonly places a deposit hold on your payment card. This is usually called a pre-authorisation or pre-auth. UK travellers often notice it appears immediately in their banking app, sometimes in dollars and sometimes as a sterling estimate, and wonder if it triggers a foreign transaction fee.
The key point is that a pre-authorisation is primarily a reservation of funds, not a completed purchase. However, UK card issuers and payment networks treat cross-border and currency activity in slightly different ways. That is why the answer can be, it depends on how the hold is processed and how your particular UK card calculates fees.
If you are comparing providers, terms and deposit practices can vary by brand and location. Hola Car Rentals summarises options across major suppliers on its car hire United States page, which can help you anticipate typical deposit ranges and card rules before arrival.
What a car hire deposit hold actually is
A deposit hold is a temporary authorisation request sent by the rental company to your card issuer. It confirms the card is valid and that sufficient available credit or funds exist to cover a set amount. The issuer then reduces your available balance by that amount, but no money has necessarily moved to the merchant.
From the rental company side, the hold protects them against unpaid charges, late returns, fuel differences, toll processing, damage excess, or additional days. The hold is usually higher than the estimated rental total, especially if you have not pre-paid or if you decline optional coverages.
Two details matter for fees. First, the country and merchant entity submitting the authorisation. Second, the currency code on the authorisation message. Either can influence whether your UK card labels the activity as foreign, even if it is only pending.
Will a pre-authorisation trigger foreign transaction fees?
Many UK cards charge foreign transaction fees when a transaction is processed by a non-UK merchant or in a non-GBP currency. With pre-authorisations, the issuer may show a pending entry, but it may not apply a fee until a financial transaction posts.
In practice, there are three common outcomes.
1) No fee until posting: The most common. The hold appears as pending, you see an estimated GBP amount, and no foreign fee line item appears. If the hold drops off and is never completed, no fee is charged.
2) Fee only if the hold is completed: If the deposit is later converted into a charge, for example to collect fuel, toll admin fees, or damage costs, the issuer posts the transaction and adds any FX fee then.
3) Fee behaviour depends on issuer policy: Some issuers treat certain authorisation messages as billable, especially if the merchant submits a completion quickly. In that case you might see a fee shortly after pickup, even though it began as a deposit hold. This is less typical, but it can happen.
How the rental company processes the hold in the United Estates
In the United Estates, most rental desks process deposits through US acquiring banks in USD. If your UK card is charged or pre-authorised in USD, your issuer will convert to GBP for display or at posting. The conversion rate typically comes from Visa or Mastercard plus any issuer mark-up.
If you are researching supplier-specific deposit patterns, Hola Car Rentals maintains pages for major brands such as Avis car rental United States and Hertz car rental United States, which can help you understand typical desk processes and card requirements.
How to minimise the chance of unnecessary FX fees
You cannot control your bank’s fee policy, but you can reduce surprises by handling the deposit and final payment in a consistent way.
Use a card with no foreign transaction fees if you have one: Many UK travel-focused credit cards reduce or remove FX fees. This often matters more than anything else, because a deposit hold that becomes a charge will be treated like any other overseas card purchase.
Ask to pay in local currency (USD): If a terminal offers “pay in GBP”, that is dynamic currency conversion. It often comes with a poorer exchange rate and can still be treated as a foreign transaction by your issuer. Paying in USD usually keeps pricing transparent.
Maintain headroom on your credit limit: A deposit hold reduces available credit. If you are close to your limit, a second authorisation or final charge could be declined or incur overdraft style costs on some products.
If you are choosing a vehicle type, note that larger categories can have higher deposits. For example, SUV deposits can be higher than compact cars, so it can be worth checking deposit expectations when looking at SUV hire United States options.
How long should the hold last?
In the United Estates, many deposit holds release within a few days after the final bill is settled, but it can take longer. The rental company typically sends a completion for the final amount, and the original hold may either be replaced by the posted charge or released separately. Banks differ in how quickly they remove the pending hold from your available balance.
A practical rule is to allow up to 7 to 10 business days for a hold to disappear, sometimes longer with debit cards. If it persists beyond your bank’s stated pending period, contact the rental company first to confirm they have closed the agreement, then contact your issuer with the final receipt.
What to check on your UK card statement
To answer the original question for your specific case, look for three things.
Whether the hold ever posted: If the pending entry vanished without a posted transaction of the same reference, it likely never settled, so an FX fee is unlikely.
Whether a separate FX fee line appears: Some issuers itemise this as “non-sterling transaction fee” or similar, often as a percentage of the posted amount.
Whether the posted currency is USD or GBP: If it is GBP and the merchant location is abroad, some issuers still apply a cross-border fee. If it is USD, an FX fee is more expected unless your card is fee-free.
For broader background on travelling and payments when renting, Hola Car Rentals’ car rental United States page provides a useful overview of what to expect across locations.
FAQ
Will I definitely pay a foreign transaction fee on a deposit hold? Not definitely. Most UK issuers do not charge a fee on a hold unless it becomes a posted transaction, but policies vary and some cross-border rules can still apply.
If the deposit hold drops off, can a fee still appear later? Usually no. Fees are normally tied to posted transactions. If a fee appears, check whether a completion or additional charge posted after return.
Is paying in GBP at the terminal a good way to avoid FX fees? Usually not. Dynamic currency conversion often uses a worse exchange rate, and your UK issuer may still treat it as an overseas merchant transaction.
Why did the rental company take a second authorisation during my trip? Longer rentals can trigger re-authorisations as the original hold nears expiry. This is normal, but it can temporarily reduce available credit more than expected.
What is the best way to avoid surprises with car hire deposits in the United Estates? Use a UK card with no FX fees if possible, pay in USD, keep credit limit headroom, and keep your return receipt until all pending holds clear.
