How to Use the Card FX Settlement Gain/Loss Calculator
When you pay with a credit or debit card abroad, the exchange rate isn't locked in the instant you swipe. The card network (Visa, Mastercard, and similar networks) settles the transaction with the merchant's bank a few days later, and it's that settlement day's exchange rate that ultimately determines the dollar amount on your statement — not the rate shown at checkout. If exchange rates move between authorization and settlement, the amount you actually get charged can differ from what you expected.
Enter the foreign currency amount along with the authorization-date rate and the settlement-date rate to see both dollar equivalents side by side, plus the exact difference. If the settlement rate is higher than the authorization rate, you end up paying more; if it's lower, you end up paying less.
Settlement typically happens within 1-3 business days of the purchase, though it can occasionally take longer depending on the merchant and card network. Because the exact settlement date and rate aren't known in advance, this calculator is most useful for estimating a realistic range of outcomes using recent exchange rate movements as a guide.
Frequently Asked Questions
A foreign card charge isn't finalized the moment you swipe. The card network (Visa, Mastercard, etc.) settles the transaction with the merchant a few days later, and it's that settlement day's exchange rate that determines your final statement amount, not the rate at the moment of purchase.
Settlement usually happens 1-3 business days after authorization, and the exact settlement date and rate aren't known until your card issuer finalizes the charge. This calculator lets you plug in both rates to estimate the possible difference ahead of time.