Foreign currency transactions are becoming increasingly common as international travel and cross-border online shopping grow. Many consumers now buy affordable products from overseas websites, but plenty still use credit or debit cards that charge 3.5% foreign transaction fees and offer poor rewards. That can add up quickly for those who spend significant amounts in foreign currencies.
To help reduce these costs, we previously listed the best credit cards for international transactions that carry low forex markup fees. This article refines that guidance by examining how card networks convert foreign currencies and how those rates affect what you ultimately pay. For small purchases the differences are often negligible, but for higher-volume spenders, even small rate variations matter.
Visa vs MasterCard vs Amex vs Diners – Which has the Best Foreign Currency Exchange Rate?
Exchange Rates on Foreign Currency Transactions
Some months ago I ran a simple test by charging a small amount on several cards to observe the actual conversion applied by different card networks. I used Xe.com as a benchmark to compare how each network’s rate varied. To keep this comparison focused, I excluded additional bank forex markup fees and taxes; the figures reflect only the network conversion rates. Remember that your final charge will include any bank markup and GST applied on that markup.
- XE value: 1 USD = Rs. 66.4
- Visa: Rs. 66.7
- Amex: Rs. 66.8
- MasterCard: Rs. 66.6
- Diners Club: Rs. 67.3 (Diners Club was closer to Mastercard in recent months)
Keep in mind that banks and networks settle transactions at different times, so the exact conversion for a given transaction can vary. Thorough testing over longer periods would give a more definitive picture, but these observations are consistent with reports from other card users. Visa and Mastercard publish their live conversion rates on their websites; American Express and Diners do not, as far as I know.
Which Card Network Has the Best Foreign Currency Exchange Rate?
Based on the tests and user reports:
- MasterCard is the best: Mastercard consistently offered the most favorable conversion rates in multiple checks and in feedback from other users.
- Visa and Amex are good: Visa and American Express produced very similar rates. Differences with Mastercard fluctuate but are generally small.
- Diners Club is the least favorable: Diners Club rates were noticeably higher, often around 1% above the XE benchmark. If you use a Diners Club card that advertises a 2% forex markup, the effective cost can be closer to 3% once network rates are taken into account.
At present, Indian credit card issuers do not always prioritize competitive foreign transaction pricing, though there are early signs of improvement. A handful of offers and promotions have reduced costs for international spends, but many such offers require a minimum number of international transactions to qualify. Banks appear to be targeting affluent frequent travelers rather than casual online shoppers who occasionally make overseas purchases.
Ideally, more banks will introduce cards with zero or very low forex markup fees as a differentiator for premium products. That would benefit frequent international spenders and make cross-border purchases more economical for a broader customer base.