Portugal · your card issuer's fees, not the deposit itself · updated September 2026

Does Your Card Charge a Foreign Transaction Fee on a Portugal Rental Deposit?

This site's currency-choice guide already covers one currency cost: always select euros when a Portuguese rental desk's terminal offers to charge you in your home currency instead, because that dynamic currency conversion (DCC) is set by the merchant's payment provider at a worse rate than your card network's own. A foreign transaction fee is a different cost, charged by your own card issuer under your cardholder agreement, and it applies regardless of which currency you chose at the terminal — a card that carries one adds a markup, commonly in the 1–3% range depending on the issuer, to any transaction processed outside your card's home country.

Whether it applies to the deposit specifically depends on what actually happens to the hold. A pre-authorisation that's simply released after the rental — the normal outcome for the €1,200–1,900 deposit this site tracks — never completes as a settled transaction, and most issuers only charge foreign transaction fees on amounts that actually settle, not on a hold that comes and goes without ever being captured. If the company does capture part of it — for fuel, tolls or damage, all covered elsewhere on this site — that captured amount is a genuine settled foreign-currency transaction, and a card with a foreign transaction fee will typically apply it there even though the much larger released portion of the hold never triggered one. Card issuers don't publish this policy the same way, so treat it as a general pattern to check against your own card's terms, not a rule this guide can confirm for every issuer.

Which companies actually work

A foreign transaction fee comes from your card issuer's own terms, not from the rental company or the payment terminal at the counter — it's a separate cost from the DCC currency choice this site's currency-choice guide covers.
A deposit hold that's authorised and then simply released, with nothing ever captured, isn't a settled transaction for most issuers, so it typically doesn't carry a foreign transaction fee on its own — but confirm this against your specific card's terms, since issuers don't all handle holds the same way.
Any part of the deposit the company does capture — a fuel shortfall, a toll, damage — settles as a real foreign-currency charge, and a card with a foreign transaction fee will usually apply it there even if the released remainder never did.
Choosing euros at the terminal (this site's DCC guide) and checking your card for a foreign transaction fee are two separate steps — doing one doesn't cover the other, and both are worth doing on the same trip.
Whichever card you consider using because it waives foreign transaction fees still has to be one the specific rental company accepts for the deposit in the first place — check that against the company-by-company rules covered on this site before assuming it's a like-for-like swap.

Step by step

Before you fly, check your card issuer's own terms (not this site) for whether it charges a foreign transaction fee, and if so, at what rate — this varies by issuer and isn't something a Portugal-specific guide can state for every card.
If your card does carry a foreign transaction fee and you hold another card that doesn't, confirm the fee-free card is still one the rental company accepts for the deposit — a debit card without a foreign transaction fee is no help if the company requires a credit card at the counter.
At the desk, still choose euros if the terminal offers a currency choice, regardless of which card you're using — that's the separate DCC decision covered on this site's currency-choice guide, and it applies no matter what your issuer charges.
After the trip, check your statement for which line items actually settled rather than just showing as a past pending hold — a foreign transaction fee, if your card has one, should only appear against amounts the company actually captured.
If a fee shows up against the full deposit amount rather than just a captured portion, query it with your card issuer directly — that's a billing question for them, not something the rental company's terms or this site can resolve.

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Frequently asked questions

Is a foreign transaction fee the same as dynamic currency conversion (DCC)?

No. DCC is a choice the payment terminal offers at the counter, converting the charge into your home currency at the merchant's own rate — this site's currency-choice guide covers that. A foreign transaction fee is a separate markup your own card issuer applies under your cardholder agreement, and it can apply whether or not you accepted DCC.

Does a Portugal car rental deposit hold trigger a foreign transaction fee even if it's fully released?

Usually not, because most issuers only charge foreign transaction fees on transactions that actually settle, and a hold that's authorised and later released without ever being captured doesn't settle. This isn't universal across every issuer, so check your specific card's terms rather than assuming it either way.

If the rental company captures part of my deposit for fuel or damage, does that get charged a foreign transaction fee?

If your card carries a foreign transaction fee, a captured amount is a real, settled foreign-currency transaction and the fee will typically apply to it, even though the larger released portion of the same hold didn't settle at all.

Should I switch cards to avoid a foreign transaction fee on the deposit?

Only if the alternative card is one the specific rental company actually accepts for the deposit — this site's company-by-company rules on debit versus credit acceptance still apply regardless of which card has better fee terms. Confirm acceptance first; a fee-free card that gets refused at the counter doesn't save you anything.

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Disclaimer

Rental conditions change frequently and companies' own documents sometimes contradict each other (see the Goldcar Lisbon Airport discrepancy). Everything on this page reflects the official terms and conditions as verified in August 2026. Always verify directly with the rental company before booking. This is practical guidance, not legal advice.