It is one of the most common questions before a trip: should I take the Visa or the Mastercard? It sounds as if it ought to matter, because the two networks really do set their own exchange rates, every day, independently. Some travellers go further and pick cards specifically for the network on the front.
The honest answer is that the network is almost never the thing that decides what you pay. The difference between the two rates is usually a fraction of a percent, and it flips from day to day. What matters is your bank's fee, what you tap at the terminal, and whether you carry a backup. This article explains how the rate is set, how big the gap really is, where the network choice does make a difference, and what to carry instead of worrying about it.
1. Who Actually Sets the Exchange Rate
When you pay abroad in the local currency, three parties touch the conversion, and it helps to separate them because only one of them is Visa or Mastercard.
The network converts. The merchant's bank sends the transaction through the card network in, say, euros. The network converts it into your card's billing currency using its own daily exchange rate, published every day, and hands your bank a dollar amount. Visa uses Visa's rate; Mastercard uses Mastercard's. This is the only place the network choice matters to the price.
Your bank adds its fee. On top of that converted amount, your card issuer may add a foreign transaction fee, typically up to 3 percent, which usually bundles the network's own cross-border charge to the bank with the bank's margin. Plenty of cards charge nothing.
The merchant can take over. If you accept a terminal's offer to charge you in dollars rather than euros, the network rate is bypassed entirely and the merchant's conversion provider sets the rate. That is dynamic currency conversion, and it overrides everything else in this article.
2. How Far Apart Visa and Mastercard's Rates Really Are
Usually a fraction of a percent. Both networks publish rates very close to the wholesale mid-market rate for major currencies, because they settle huge volumes and compete for issuers. On a given day, for euros, pounds, yen or pesos, the two rates are typically within a few tenths of a percent of each other, and on many days within a hundredth.
The winner changes. Comparisons over time have tended to find Mastercard's rate marginally better on more days than Visa's, but not every day, not for every currency, and not by enough to matter on a holiday budget. On a $2,000 trip, a gap of 0.2 percent is four dollars.
The rate is fixed when the charge settles, not when you tap. Networks convert at the rate for the day the transaction is processed, which can be a day or more after you paid. A hotel that settles a week later, or a pre-authorisation hold that is released and re-charged, may convert on a different day from the one you expect. In a stable currency this is noise; in a volatile one it can outweigh the difference between the networks.
You can check both yourself. Visa and Mastercard each have a public currency converter on their websites. Enter the amount, the currencies and the date, set the bank fee to zero, and you will see what each network would have charged. Doing it once for your destination is the best way to see how small the gap is.
3. The Costs That Dwarf the Network Choice
If you are choosing a card for a trip, the network is the last thing to optimise. These are the things that change what you pay, in order of size.
Accepting dynamic currency conversion. Being charged in your home currency by the merchant typically costs 3 to 8 percent, sometimes more, on every transaction where you accept it. That is ten to forty times the usual gap between the two networks. Always choose the local currency.
Your issuer's foreign transaction fee. A card charging 3 percent costs you fifteen times more than the typical difference between Visa and Mastercard. Switching from a 3 percent card to a no-fee card is the single largest saving most travellers can make, and it does not matter which network the new card runs on. Our explainer on foreign transaction fees covers how to check yours.
ATM fees. For cash, the foreign machine's operator fee and your own bank's out-of-network fee usually exceed the network rate difference many times over. The comparison that matters is between cards that refund those fees and cards that give a better rate, covered in Wise vs Schwab.
Cards that convert themselves. Some multi-currency cards, Wise among them, hold a balance in the local currency and convert it at their own published rate before you spend. With those, the network's rate is not applied to a card payment made from a balance held in that currency, so the Visa-or-Mastercard question disappears.
Skip the Rate Question Entirely
A Wise card converts at the real mid-market rate with no markup, can hold euros, pounds, yen and dozens of other currencies before you travel, and charges no foreign transaction fee, so the network's rate stops mattering.
Get the Wise Card →Free account, ~$9 card fee. Want cash on arrival? Order currency before you fly →
4. Acceptance: Where the Network Genuinely Matters
Almost everywhere, Visa and Mastercard are interchangeable. A merchant that takes one takes the other in the overwhelming majority of countries, and the familiar pair of logos on a door is the norm from Lisbon to Bangkok. Choosing between them for acceptance is rarely worth a thought.
The exceptions are merchants, not countries. Occasionally an individual retailer, often a warehouse club or a discount chain, has a contract with only one network and turns the other away. It is uncommon, local and unpredictable, which is the best argument for carrying one card of each.
Domestic networks are the bigger issue. What actually gets foreign cards refused is not Visa versus Mastercard but local schemes: Girocard in Germany, UnionPay and the QR apps in China, JCB and IC cards at some Japanese counters, and national debit networks elsewhere. A merchant set up only for those rejects both international networks equally. Our guides on cards declined in Germany, China and Japan cover the specifics.
American Express and Discover are a different question. Both have much narrower acceptance abroad than Visa and Mastercard. If either is your only card, you will be refused regularly in Europe, Asia and Latin America, and the problem is the network, not your bank. Capital One's debit cards moving onto the Discover network is covered in our network switch explainer.
5. Outages, Fraud Blocks and Why Two Networks Beat One
Networks do go down. Rarely, but visibly: Visa suffered a widespread outage across Europe in 2018 that left cards refused for hours, and both networks have had shorter regional disruptions since. During one, every card on the affected network fails at once, whichever bank issued it.
Banks block more often than networks fail. The far more common failure abroad is your own issuer's fraud system freezing a card after an unexpected transaction. A second card from a different bank survives that; a second card from the same bank often does not. The card-declined guide walks through the causes.
So the practical answer is one of each. Carry a Visa and a Mastercard, from two different institutions, both without foreign transaction fees, and keep them in different places. That covers a merchant that takes only one network, a network outage and a fraud block in a single step. Which network your main card runs on then genuinely does not matter.
6. What About Debit Cards and Cash?
The same rule applies at the ATM. A foreign withdrawal is converted by your card's network at its daily rate, then your bank adds any foreign fee and out-of-network charge, and the ATM operator may add its own. The network gap is the smallest of the four.
The ATM's conversion offer is the trap. Foreign machines, particularly independent ones, often offer to convert the withdrawal for you. Decline and choose the local currency so that your network, not the machine, sets the rate. Our guide to avoiding ATM fees covers the rest.
Bank of America's Global ATM Alliance waives BoA's flat non-network fee at partner banks abroad, whichever network your BoA card uses. BoA's 3 percent international transaction fee still applies and is never waived. That fee is far larger than any difference between the Visa and Mastercard rates, which is why a no-fee card beats an Alliance withdrawal. The details are in our Alliance explainer.
Frequently Asked Questions
Is Visa or Mastercard better for exchange rates abroad?
Neither consistently. Each network sets its own daily rate close to the mid-market rate, and on most days for major currencies the two are within a few tenths of a percent. Comparisons over time have found Mastercard slightly ahead more often, but not always. Your bank's foreign transaction fee and whether you accept dynamic currency conversion change the cost far more.
Does Visa or Mastercard charge a foreign transaction fee?
The networks charge your bank a cross-border fee, and your bank decides whether to pass it on, usually as part of a foreign transaction fee of up to 3 percent. Many cards on both networks charge no foreign transaction fee at all. Check your card's fee schedule; the fee depends on the bank, not the logo.
Is Visa or Mastercard more widely accepted abroad?
They are accepted almost equally worldwide. Where a foreign card is refused, it is usually because the merchant only takes a domestic network such as Girocard, UnionPay or JCB, which excludes both, or because an individual merchant has a single-network contract. Carrying one of each covers the rare exception.
Which exchange rate is used, the day I pay or the day it posts?
Generally the rate on the day the network processes the transaction, which can be a day or more after you paid, and later again for hotel bills settled at check-out or holds released and re-charged. In major currencies the movement is small; in volatile currencies it can exceed the gap between the two networks.
How can I check Visa's and Mastercard's exchange rates?
Both networks publish free currency converters on their websites. Enter the amount, the transaction currency, your card currency and the date, set the bank fee to zero, and compare. The result shows the network rate only; add your own bank's foreign transaction fee to see the full cost.
Should I carry both a Visa and a Mastercard when travelling?
Yes, ideally from two different banks and both without foreign transaction fees. That protects you against a merchant that accepts only one network, a network outage, and the far more common problem of your own bank blocking a card for suspected fraud. Keep them in separate places.
The Bottom Line
Visa and Mastercard do set different exchange rates, and one of them will be very slightly better on any given day. It will rarely be the same one for long, and the gap is almost always smaller than the rounding on a restaurant bill. If you have been choosing cards by the logo, you can stop.
What moves the number is simpler. Use cards with no foreign transaction fee. Always pay in the local currency when a terminal or ATM offers to convert. Carry a Visa and a Mastercard from two different banks, in two different pockets. Do those three things and the network question answers itself.
To choose the cards, our travel card comparison lists the ones with no foreign fees, and the best travel debit cards covers the ATM side. If you are worried about a card being refused on arrival, the country-by-country decline guides start with why cards get declined abroad.
Hero photo: a card payment terminal at a shop counter in Japan, by RuinDig/Yuki Uchida, CC BY 4.0, via Wikimedia Commons.