PAYING ABROAD
Paying abroad: local currency vs home currency and DCC fee traps
Choosing your home currency on a foreign card machine can add a 5%–10% hidden conversion markup.
What is Dynamic Currency Conversion (DCC)?#
Dynamic Currency Conversion (DCC) is a service offered at foreign POS terminals and ATMs that converts the bill into your home currency at the merchant's exchange rate.
While seeing your home currency appears convenient, merchants and acquiring banks add a hidden markup of 3% to 8% above official rates.
Always choose local currency#
When paying at a terminal, ATM, or overseas online merchant, always choose the local currency of the destination (e.g., JPY in Japan, EUR in Europe, USD in the US).
Your card-issuing bank will convert the transaction using official Visa, Mastercard, or UnionPay exchange rates, which cost far less than DCC.
Foreign Transaction Fees (FTF)#
In addition to exchange rates, some credit cards charge a 1.5% to 2.5% foreign transaction fee on overseas purchases.
Choose a zero-foreign-transaction-fee card before travelling to eliminate unnecessary conversion surcharges.
Two real-world examples#
Example 1: A 10,000 JPY meal in Tokyo. The terminal prompts 10,000 JPY or 70 USD. Choosing JPY converts via your bank to ~$65 USD, saving $5 compared to the DCC rate.
Example 2: Withdrawing cash at a foreign ATM. If the screen asks to 'Continue with Conversion', select 'Decline Conversion' to let your issuing bank process the rate.
Mistakes and dispute handling#
The most common mistake is signing receipt slips without checking: if your home currency is printed, DCC was selected by default.
If a merchant forces DCC without your consent, keep the receipt, request a re-transaction in local currency, or file a chargeback dispute with your card issuer.
Security and Mobile Pay#
Using Apple Pay or Google Pay tokenizes your credit card, protecting magnetic strips from skimming while reducing forced DCC prompts at checkout.
Sources
MORE GUIDES
Keep reading before you go
Hong Kong: eSIM, roaming or a local SIM?
Narrow the choice by trip length, phone compatibility and whether your usual number must remain available.
How much mobile data will your trip need?
Trip length is only the starting point. Video quality, autoplay and tethering usually change the result most.
Check these before travelling with an eSIM.
Do not wait until arrival to discover an incompatible phone, expired QR code or incorrect data line.