How currency and card fees affect treatment cost.
The figure on the quote is rarely the figure that leaves your account. The billing currency, the exchange rate on the day, and a few fees at the terminal all sit in between. On a large medical payment, that gap is real money.
Where does the money leak?
In three places. First, the currency the bill is actually fixed in, because a price quoted in your home currency may still be billed in the local one. Second, the exchange rate, which moves daily, so a converted figure is an estimate rather than a locked price. Third, the fees on the payment itself. When a terminal offers to charge you in your home currency that is dynamic currency conversion, and consumer finance sources put the markup at roughly 3 to 12 percent, on top of any foreign transaction fee your own card adds, often around 2 to 3 percent.
These figures are indicative and dated to June 2026, and your own card terms will differ, so confirm them with your bank. The fix is simple: know the billing currency, treat conversions as moving estimates, and pay in the local currency with a low fee card.
Which currency is the price fixed in.
A quote shown in your home currency can still be billed in another.
The first thing to pin down is the currency the price is genuinely fixed in. A clinic may quote a figure in your home currency for comfort, but bill in the local currency, in which case the amount you actually pay moves with the exchange rate between the day you are quoted and the day you settle. If the price is truly fixed in your home currency you carry less of that risk, but you should see it stated plainly rather than assume it. Either way, get the billing currency and the headline figure confirmed in writing before you commit.
Because the rate moves daily, treat any converted number as indicative. A quote that read as one amount when you first saw it can settle higher or lower by the time the payment clears, especially when there are weeks or months in between. That is not a trick, just how currency works, but it means the home currency figure is an estimate to monitor rather than a fixed promise to bank on.
Two fees that can stack on one payment.
The convenient choice at the terminal is usually the costly one.
Dynamic currency conversion. When you pay by card abroad, the terminal may ask whether to charge you in the local currency or your home currency. Choosing your home currency is dynamic currency conversion, where the merchant's payment system does the conversion and applies a markup. Consumer finance sources describe this markup as commonly in the region of 3 to 12 percent, and card network rules require it to be disclosed and to rest on a wholesale rate before the markup is added. Card networks and consumer guides advise declining it.
Foreign transaction fees. Separately, your own card may add a foreign transaction fee on any payment in another currency, frequently around 2 to 3 percent. The two are different costs, and accepting conversion can mean paying both at once, the merchant markup plus your card fee. These ranges are indicative for June 2026 and your card terms may differ.
Why it matters more here. On a coffee these percentages are trivial. On a medical bill running into thousands they are not, which is why the currency and card choice is one of the few cost levers fully within your control.
How to keep more of your money.
Small choices that protect a large payment.
Money, but never before safety.
Save on the conversion, not on the care.
Currency and card fees are worth getting right, because a few percent of a large payment is real money saved. But they sit well below the decisions that matter most: whether the care is safe, the clinician registered, the facility accredited, and the aftercare planned. Use these habits to avoid losing money needlessly, never to chase the cheapest possible payment at the expense of choosing the right place to be treated.
If a payment method that protects you costs slightly more than the absolute cheapest route, the protection is usually worth it on a sum this size. This is general information, not financial advice, and exchange rates and card terms change, so confirm the current rates and fees with your bank or card provider before you pay.
Get the price and currency in writing.
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The things people ask.
Should I pay in local or my home currency?
Local currency, almost always. Choosing your home currency at a terminal is dynamic currency conversion, which adds a markup on top of any fee your card already charges, so it usually costs more.
How big are these fees on a medical bill?
Indicatively, consumer finance sources put dynamic currency conversion at roughly 3 to 12 percent and a card foreign transaction fee at around 2 to 3 percent, dated June 2026. On a bill of several thousand that is a meaningful sum, so it is worth avoiding.
Why did the price change after I was quoted?
Likely because the bill is fixed in the local currency and the exchange rate moved between the quote and the payment. A converted figure is indicative, not a locked price.
How do I avoid paying two fees at once?
Decline dynamic currency conversion and pay in the local currency, so only your own card or bank converts. Accepting conversion can mean a merchant markup plus your card fee.
Is the cheapest payment always best?
No. A method that protects you can be worth slightly more on a large sum. Save on conversion and fees, but never at the cost of the protection or the quality of care.
Where to go next.
Currency and billing
GuideWhy the number on the bill is not always the number you pay.
Paying safely and deposits
GuideHow to pay so a deposit does not become a loss.
Hidden costs of medical travel
GuideThe line items a headline quote tends to leave out.
You can also Get Matched with vetted clinics or read how much treatment abroad costs.
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