Is It Cheaper to Pay in Local Currency When Abroad?
Written with AI assistance and reviewed by the NorwegianSpark SA editorial team
The card machine in a café in Lisbon asks whether you would like to be charged in euros or in pounds. The ATM in Bangkok offers you a helpful conversion into your own currency, with the rate right there on the screen and a big green button underneath it. Both are asking the same question, and it is not the friendly one it appears to be.
The short answer: pay in the local currency, almost always. The useful answer is why, what the alternative actually is, and the one situation where the usual advice is wrong.
What you are actually being offered
The thing you are being offered has a name — dynamic currency conversion — and a specific structure. Normally, a card payment in a foreign currency travels to your own card issuer, which converts it using its own rate and its own charges. Dynamic currency conversion moves that conversion to the point of sale instead. The merchant, the ATM operator or their payment provider does the conversion, sets the rate, and bills your card in your home currency.
Two consequences follow, and only the first is obvious.
Someone else chose the rate. Not your bank, and not a market. The party quoting it is the same party that benefits from the margin, and they have no relationship with you to protect.
Your own issuer's charges may still apply. Converting at the terminal does not automatically remove your card's foreign-transaction handling. Depending on your card, you can end up inside two pricing structures instead of one.
What the terminal is required to show you
This is not an unregulated corner. Within the European Economic Area, Regulation (EU) 2019/518 — amending the cross-border payments regulation — inserted rules requiring that the total currency conversion charge be expressed as a percentage mark-up over the latest available euro foreign exchange reference rates issued by the European Central Bank, and disclosed to the payer before the payment transaction is initiated. Providers must also publish their mark-ups in a comprehensible, accessible way. The first tranche of those obligations applied from 19 April 2020 and the remainder from 19 April 2021.
That is a genuinely useful piece of consumer protection, and it points at exactly the right number: not the rate, which is hard to judge, but the mark-up over a neutral reference. If a screen offers you a conversion and shows you a percentage, you are being handed the comparison for free.
The corollary matters too. Outside that regulatory perimeter, nothing obliges anyone to show you the mark-up at all, and the screen will simply present a rate that looks like a fact.
How to decide, at the terminal, in five seconds
- In a shop or restaurant: choose the local currency. The price on the menu is in local currency; pay it in local currency.
- At an ATM: choose to be charged in the local currency, and decline any "conversion" offer, however it is worded.
- If a percentage mark-up is displayed: that is your comparison figure. Anything above a low single-digit percentage is worse than a mainstream card issuer's own conversion.
- If no percentage is displayed: you have no way to evaluate it, which is itself the answer.
The wording is deliberately soft — "would you like to pay in your own currency?", "guaranteed rate", "no surprises on your statement". The offer is framed as certainty rather than as a price, and certainty about the wrong number is not worth paying for.
The counter-argument, and it is real
There is one situation where paying in your home currency genuinely can be the better choice, and pretending otherwise would be dishonest.
If your own card charges a large foreign-transaction fee and applies a poor conversion rate of its own, then the terminal's mark-up is being compared against something bad rather than something good. Some cards, particularly older credit cards from traditional issuers in some markets, are expensive enough at conversion that a disclosed terminal mark-up is competitive.
The way to know is to test it once, with a small purchase, and read the statement. Which brings us to the only method that settles this properly.
Test it yourself, once, with arithmetic
Do this on your next trip and you will never have to wonder again.
- Note the exact price in local currency at the point of sale.
- Pay in local currency.
- When the transaction settles, note the exact amount debited in your home currency, including any separately listed fee.
- Look up the mid-market rate for that pair on the transaction date.
- Divide the home-currency amount by the local-currency amount. Compare with mid-market.
That percentage is what your own card charges you to convert. Now you have a benchmark, and every dynamic conversion offer that shows a mark-up can be judged against it in a second. The method is the same one we set out in why banks quote a worse rate than mid-market.
| Route | Who sets the rate | What you can verify at the time |
|---|---|---|
| Pay in local currency | Your card issuer | Nothing at the terminal; everything on the statement |
| Dynamic currency conversion inside the EEA | The merchant or ATM operator | A mark-up over the ECB reference rate, before you confirm |
| Dynamic currency conversion elsewhere | The merchant or ATM operator | Usually only a rate, with no reference point |
Note the asymmetry. The regulated version of the thing you should usually decline is the only one that shows you its price.
Related traps in the same moment
Withdrawing a larger amount less often reduces the impact of fixed fees, at the cost of carrying more cash. That is a security judgement rather than a financial one, and it depends entirely on where you are.
What we have not told you
No percentages for any provider, no ranking of cards by foreign-transaction fee, and no figure for the typical dynamic-conversion mark-up. Those numbers circulate widely and they are, in every version we could check, either third-hand or market-specific. The mark-up varies by the operator, the country, the machine and the day, which is precisely why the regulation requires it to be shown to you at the moment of the decision rather than published as an average in an article.
Read the screen. Do the division once on your own card. Those two habits are worth more than any table we could print.
For the cost stack on the account behind the card, see the six hidden costs of a multi-currency account. If the card is being refused outright rather than converted badly, that is a different problem — why your card gets declined abroad.
General information, not financial advice. Rates, fees and disclosure rules vary by provider, card and country and change; verify with your own provider.
Sources
Checked 6 September 2026.
- Regulation (EU) 2019/518 amending Regulation (EC) No 924/2009 as regards certain charges on cross-border payments in the Union and currency conversion charges, text as published by legislation.gov.uk: legislation.gov.uk
