“Would You Like to Pay in Your Own Currency?” Always Say No (Part 2 of 3)
By the NorwegianSpark Editorial Team · Written with AI assistance.
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There is exactly one fee in international payments that you are politely asked to agree to, in writing, on a small screen, while a queue forms behind you.
It is phrased helpfully. "Would you like to pay in GBP instead of EUR?" Yes appears on the right, where your thumb already is. The helpful currency is your own. What could possibly be wrong with that.
This is dynamic currency conversion, and it is the most expensive button in travel.
What DCC actually is
Normally, a foreign purchase is converted by the card network — Visa or Mastercard — at their daily wholesale rate, and your issuer may then add a foreign transaction fee of typically 1–3% (NerdWallet, 2026).
With DCC, the merchant's payment provider does the conversion instead, at a rate they choose. They quote you a figure in your home currency, you approve it, and the transaction reaches your bank already converted.
The pitch is certainty: you see the number in your own money before you agree. That part is true. What is not disclosed with equal prominence is the rate used to produce that number, which is set by the party being paid, not by the network.
DCC is the only case in payments where the person receiving the money also chooses the exchange rate. Nobody designed that arrangement to work out in your favour.
The arithmetic, on a 100 dinner
A worked example with round numbers so the shape is clear:
| Path | What happens | Roughly, on a 100 purchase |
|---|---|---|
| Pay in local currency, 0% fee card | Network converts near wholesale | ~100 |
| Pay in local currency, 3% fee card | Network converts, issuer adds 3% | ~103 |
| Accept DCC, 0% fee card | Merchant's provider converts at their rate | ~104–107 |
| Accept DCC, 3% fee card | Merchant's rate, and some issuers still apply the fee | ~107–110 |
The bottom row is the one that surprises people. Accepting DCC does not reliably remove your card's foreign transaction fee — the transaction can still be flagged as foreign, because it is. You can end up paying a merchant's mark-up and your issuer's fee on the same coffee.
Where you will meet it
DCC is not rare and it is not a scam operating in the shadows. It is a mainstream product with a sales force, and it appears:
- At card terminals in shops and restaurants, as the screen question.
- At ATMs, phrased as "with conversion" or "without conversion" — the "guaranteed rate" is the DCC one.
- On hotel and car hire bills, sometimes applied by default at check-out.
- In online checkouts on foreign sites, as a pre-ticked currency selector.
- On airline and booking sites, where the currency defaults to your billing country.
The online cases are the ones people miss entirely, because there is no cashier and no queue — just a dropdown that was already set before you arrived.
Why merchants offer it
Not out of malice — out of economics. The payment provider offering DCC shares the mark-up with the merchant. It is a revenue line on a transaction that would otherwise be pure cost. Terminal staff are often trained to present it as a customer service, and in many cases genuinely believe it is one.
This matters for how you decline it: politely, without a lecture. The person at the till did not price the product.
The regulatory position, briefly
In the EU, the rules improved. Regulation (EU) 2019/518 requires providers to disclose currency conversion charges as a percentage mark-up over the latest available euro reference rate published by the European Central Bank, so cross-border euro payments can be compared like for like (EUR-Lex, ECB reference rates).
Disclosure is not prevention. The mark-up must be shown; it may still be accepted. And outside the EU there is often no equivalent requirement at all.
The permanent fix
Declining DCC is free and works every time, but it relies on you being awake at a till after a long flight. Two structural fixes reduce how often it can even come up:
1. Carry a card with no foreign transaction fee so that paying in local currency is genuinely the cheapest path. See our comparison and the reality check on the catches.
2. Hold the currency before you travel. If the account already holds euros, there is no conversion at the till to mark up. That is the whole argument for multi-currency accounts — open a Wise account or compare the alternatives on our sister site in what multi-currency accounts really cost.
We test both approaches against each other with real amounts in Part 3. And if you are choosing between a travel card and an account in the first place, multi-currency account vs travel credit card is the shorter version.
The one-line summary
Always pay in the local currency of the country you are in. It is the single highest-value habit in international spending, it costs nothing, and it takes one extra second at a terminal.
Next: what actually happens when you run 5,000 through a card and through a multi-currency account.
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Some links above are affiliate links. Where a partner pays us, our editorial view is unchanged — see our [affiliate disclosure](/disclosure).
Sources
- EU — Regulation (EU) 2019/518 on cross-border payments and currency conversion charges: eur-lex.europa.eu
- European Central Bank — Euro foreign exchange reference rates: ecb.europa.eu
- NerdWallet — Best No Foreign Transaction Fee Credit Cards, August 2026: nerdwallet.com
- CNBC Select — Best credit cards with no foreign transaction fees, August 2026: cnbc.com
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Frequently Asked Questions
What is dynamic currency conversion?
Dynamic currency conversion is when the merchant's payment provider converts a foreign purchase into your home currency at a rate they set, instead of letting the card network convert it at its wholesale rate. You are shown the amount in your own currency and asked to approve it.
Should I ever accept dynamic currency conversion?
As a rule, no. The party receiving the money chooses the exchange rate, and the mark-up is typically larger than the card network's spread. The only argument for it is knowing the exact home-currency figure at the moment of purchase, which rarely justifies the cost.
Does accepting DCC avoid my card's foreign transaction fee?
Not reliably. The transaction is still a foreign transaction, so many issuers still apply their fee. You can end up paying the merchant's mark-up and your issuer's fee on the same purchase.
Is dynamic currency conversion legal?
Yes. In the EU, Regulation (EU) 2019/518 requires conversion charges to be disclosed as a percentage mark-up over the ECB's euro reference rate so they can be compared. Disclosure rules make the cost visible; they do not remove it, and equivalent rules do not exist everywhere.