Dynamic currency conversion (DCC) is the option, offered at overseas card terminals and ATMs, to pay in Australian dollars instead of the local currency. The conversion is done on the spot at a rate set by the merchant’s provider, which typically includes a significantly larger margin than the card network’s rate.
The offer usually appears as a question at the terminal: pay in the local currency, or see the charge in your home currency? Choosing Australian dollars feels reassuring because the number is familiar and fixed at that moment. What the screen rarely makes clear is whose exchange rate is being applied, and DCC rates are set by the terminal operator rather than by Visa or Mastercard.
Paying in the local currency instead means the conversion happens later at the card network’s wholesale rate, plus whatever international transaction fee the cardholder’s own bank charges. Consumer authorities in Australia and Europe have consistently found the network path cheaper than the DCC path, often by a wide margin.
Both paths convert one purchase, and European law gives them a common denominator: since 19 April 2020, payment service providers and anyone offering currency conversion at a point of sale or an ATM have had to state the charge as a percentage mark-up over the latest euro reference rate issued by the European Central Bank. Put numbers to that. Suppose a purchase of 100 euro, a reference rate of 1.65 Australian dollars to the euro, and so A$165 at the benchmark. Suppose the card scheme's own conversion carries a 1 per cent mark-up, giving A$166.65, and the dynamic currency conversion offered at the terminal a 5 per cent one, giving A$173.25. An issuer's international transaction fee, where one is charged, applies to whichever converted figure reaches the card, so at 3 per cent the two become A$171.65 and A$178.45. The fee scales the gap rather than closing it: A$6.60 becomes A$6.80.
The same choice appears on overseas ATM withdrawals and on some foreign websites charging in AUD. Tradergy’s travel-money pages show the live mid-market rate for each destination, which is the honest baseline either path can be measured against.
Longer read: Using a debit card overseas: what you are charged. The four separate charges that can apply to a card transaction abroad, who applies each one, and which of them you can decline at the terminal.
See the travel-money pages for where this term shows up in practice.
Related terms
Exchange-rate margin · Mid-market rate · All terms
Primary authority: Moneysmart. Definition reviewed against the authority’s published material; this page is reference information, not advice.
Common questions
Should the terminal charge me in AUD or local currency?
That is a decision for you, but the mechanics are factual: choosing AUD invokes DCC at the terminal operator’s rate, while choosing the local currency defers conversion to the card network’s rate plus your bank’s international fee. Comparisons by consumer authorities have generally found the second path cheaper.
Where does DCC show up?
At overseas point-of-sale terminals, at foreign ATMs offering to complete the withdrawal "with conversion", and on some overseas websites that detect an Australian card and offer to bill in AUD. In each case the conversion rate is set by the merchant’s provider, not the card network.