What is the Mastercard exchange rate?

Heading overseas from the UK? Paying with a credit or debit card is a simple and convenient way to cover expenses or withdraw cash in the local currency. It’s also a go-to choice for online shopping with international retailers.

That said, when you spend in a different currency, figuring out the true cost in pounds isn’t always straightforward. Beyond any fees charged by ATMs, retailers or your bank, the exchange rate used to convert GBP into the local currency can make a noticeable difference. If the rate is unfavourable, it can affect your overall travel budget.

In this guide, we’ll take a closer look at Mastercard debit and credit cards and the exchange rates they apply to non-GBP transactions. We’ll also explain when these rates apply and highlight any additional fees or charges you should be aware of.

Mastercard exchange rate calculator

You can check the Mastercard exchange rate for a purchase you’re about to make or one you’ve already completed by using the Mastercard currency conversion calculator.

To get an estimate, you’ll need to enter a few details:

• Date of the transaction
• % fee your bank may charge
• Transaction amount and currency
• Currency of your card¹

Once you fill everything in, the calculator will show you the estimated cost in your card’s currency. Keep in mind that the result is only an estimate.

The final amount may differ if your bank applies extra fees. Also, the exchange rate can change between the moment you make a transaction and when it is officially processed, which can affect the total:

“Currency conversion rates are specific to the date and time your bank authorises the transaction (which generally occurs at the point of sale/interaction). If Mastercard is unable to apply the currency conversion rate at authorisation, Mastercard will apply the currency >conversion rate at the date and time the transaction is processed.”¹

A useful way to assess the Mastercard exchange rate is to compare it with the interbank rate, often called the mid-market exchange rate. This is the baseline rate banks use when trading currencies, so it gives you a clear point of reference for how the Mastercard rate measures up.

It’s just as important to check whether your bank adds its own percentage fee when you use your Mastercard abroad, as this can make a noticeable difference to the total cost. You can usually find this in your account terms or in the fees section of your online banking.

What’s the mid-market rate?

So, what exactly is the mid-market exchange rate? In short, it’s the midpoint between the price banks are willing to buy and sell a currency for. This is the rate used when banks trade currencies with each other on global financial markets.

In practice, most banks and money transfer services don’t use the mid-market rate when carrying out currency conversions. Instead, they typically add a margin or mark-up on top of the mid-market rate.

This allows them to advertise “fee-free” or “zero commission” currency conversions. While it may sound appealing, the extra cost is built into the exchange rate itself, making it hard for customers to see what they’re really paying.

The mid-market rate changes constantly based on market conditions, but it’s easy to check either today’s rate or historical rates using online exchange rate alert tools or live currency converter apps, such as those offered by Wise.

Once you know the mid-market rate, you can compare it with the rate your card provider, bank or money transfer service is offering. This lets you see whether the deal is transparent and reasonable or whether it comes with hidden costs you might prefer to avoid.

When does the Mastercard exchange rate apply?

In some cases, when you use your Mastercard at an overseas ATM or to pay for goods and services abroad, the exchange rate applied may not be the same as Mastercard’s official rate.

Here’s how Mastercard explains it:

“If your transaction is converted by the merchant or ATM operator, Mastercard currency conversion rates will not apply. This will usually occur when you select to pay in your card's currency as opposed to the currency of the merchant or ATM.”¹

This is because of something known as dynamic currency conversion (or DCC for short).

If you travel frequently, you’ve probably encountered DCC. This is when you’re asked whether you want to pay in your home currency rather than the local currency. Banks often present this as convenient, since it shows the cost in your own currency right away, but DCC can come with hidden fees and extra costs.

The reason is that the exchange rate is set by the ATM operator, merchant or an intermediary bank when you opt for DCC, not by Mastercard.

These providers have no incentive to give you a favourable rate since you’re not their customer. They can inflate the exchange rate to make a profit on the transaction. Also, since the amount is shown only in your home currency, you can’t see exactly what rate is being applied.

This often leads to paying more than necessary, so the best approach is to always choose to pay in the local currency. That way, you are charged using Mastercard’s exchange rate, which is generally more transparent and reliable.

How much does Mastercard charge for an international transaction?

Mastercard doesn’t have a standard international transaction fee for all cardholders. The amount you pay depends on how your bank or card issuer applies fees for purchases made abroad or in a foreign currency.²

Is the Mastercard rate better than the Visa rate?

Recent comparisons show that Mastercard’s exchange rate is slightly more favourable than Visa’s for certain currencies. However, the difference is usually very small and varies depending on the currency and the date.

For example, as of today, if you exchange £100 into euros with a 2% bank fee, you’ll receive €117.02 using the Visa exchange rate.³ Using the Mastercard exchange rate under the same conditions, you’ll receive €117.11.¹

Other fees and charges when using your Mastercard abroad

When you use your card abroad, some banks charge foreign currency transaction fees, sometimes called ‘non-Sterling transaction fees.’ These can apply to purchases or ATM withdrawals. Luckily, these fees are becoming less common.

The fees differ by bank and account type. They may be a fixed amount or a percentage of the transaction, with percentage-based fees potentially adding up quickly.

Before travelling, it’s a good idea to review your bank account’s terms and conditions. These are usually available online, while key details are often printed on the back of your account statements.

ATM withdrawals can also come with extra costs, as operators may impose access or transaction fees in addition to any bank charges.

Spend abroad like a local with Wise

While banks and money transfer providers often give you a bad exchange rate to make extra profits, there are alternatives.

Wise, for example, is different. It reduces international transfer and currency conversion fees by connecting local bank accounts around the world. This lets you send, spend, convert and receive money in multiple currencies for low fees*, using the mid-market exchange rate without additional mark-ups.

Open a Wise account online and you can manage your money in 40+ currencies all in one place.

You can even get a Wise card for a one-time fee of just £7, which will let you spend like a local in 40+ currencies.

It automatically converts currency at the mid-market exchange rate whenever you spend, for just a small conversion fee*. Or if you already have the currency in your Wise account, there’s no fee to pay.

Open your Wise account 🌍

After reading this, you should have a clearer understanding of how to check Mastercard’s exchange rate while travelling and how to avoid extra costs by opting out of Dynamic Currency Conversion (DCC) and choosing to pay in the local currency.

This means you can spend and withdraw cash abroad with confidence, with a better understanding of the fees you may incur.

Sources used for this article:

1. Mastercard - Mastercard currency converter calculator
2. Mastercard - fees
3. Visa - Visa currency converter calculator

Sources last checked on date: 20-July-2026