Pay in Local Currency or Yours? DCC Calculator

The interactive calculator loads here. It uses the mid-market rate (30 Sept 2026, European Central Bank reference data) or the live rate when available.

What dynamic currency conversion is

Abroad, a card terminal or ATM may offer to charge you in your own currency instead of the local one. That offer is dynamic currency conversion (DCC). It looks convenient because you see a familiar number, but the exchange rate is set by the terminal's provider, not by your card network, and it usually includes a margin of several percent. Declining means the charge goes through in the local currency and your card network converts it close to the mid-market rate, plus any foreign transaction fee your card charges.

How the comparison works

Enter the local price, the amount the screen offers in your currency, and your card's foreign transaction fee. The calculator converts the local price at today's mid-market rate, adds your card fee to get the cost of declining, then compares that with the DCC offer. Many card issuers apply their foreign transaction fee to a DCC charge too, because the merchant is still abroad; leave that option on unless your card terms say otherwise.

Worked example

A restaurant bill is €100 and the terminal offers $118. At 0.90 euros per dollar the mid-market value is $111.11, so the terminal's rate carries a 6.2% margin. With a card that charges 3% on foreign transactions, declining costs $114.44 and accepting costs $118 plus 3%, or $121.54: $7.10 more for the same meal. With a no-foreign-fee card the gap is still $6.89.

At the terminal or ATM

• Choose to pay in the local currency whenever you are asked. On ATMs the choice may be worded as 'without conversion' or 'decline conversion'.
• If a merchant processes the charge in your currency without asking, you can ask for it to be voided and run again in the local currency.
• Online shops and hotel booking sites sometimes offer the same choice at checkout; the same logic applies.
• Use the markup calculator afterwards to check what any exchange actually cost you.

Frequently asked questions

Should I pay in local currency or my home currency abroad?

Almost always the local currency. Paying in your home currency means accepting dynamic currency conversion, whose rate usually includes a margin of several percent above the mid-market rate.

What is a dynamic currency conversion fee?

There is rarely a separate fee line; the cost is built into the exchange rate the terminal or ATM offers. Comparing the quote with the mid-market rate, as this calculator does, shows the margin.

Does my card still charge a foreign transaction fee if I pay in dollars?

Often yes, because the merchant is located abroad. Check your card terms; if it does, accepting DCC means paying both the DCC margin and the card fee.

Should I accept conversion at a foreign ATM?

Generally no. Decline the conversion and let your bank convert the withdrawal; the ATM operator's own rate is usually worse. The ATM's access fee, if any, is charged either way.