What is a Mastercard?

How does Mastercard work? 

Mastercard helps money move safely between the seller and banks when you pay with your card. 

Here’s how it works in simple terms: 

• The seller tells Mastercard you want to pay 

• Mastercard sends that information to your bank 

• Your bank checks you have the money or available credit 

• If all is fine, your bank says “yes,” and the payment goes through. 

Mastercard doesn’t decide if you’re approved for a card, and it doesn’t set your interest rate or fees — your bank or card provider does. 

What types of cards use Mastercard? 

Many different cards can run on the Mastercard network: 

• Credit cards – you borrow money to pay for things, then repay it later. 

• Debit cards – you spend your own money straight from your bank account. 

• Prepaid cards – you top them up first, then spend from the balance. 

All of these work in shops, online and abroad, as long as the retailer accepts Mastercard. 

What are the benefits of Mastercard? 

Even though your bank controls your card, Mastercard adds useful features to help keep your payments smooth and safe. These can include: 

Strong security 

Mastercard uses protective technology to help keep your card details safe. This includes encryption, fraud monitoring and extra checks for online payments. 

Worldwide acceptance 

Mastercard is accepted in millions of places around the world. This means it’s easier to use your card when travelling or shopping online. 

Extra protections 

Some Mastercard credit cards come with benefits like purchase protection or chargeback rights. These can help you get money back if something goes wrong with a purchase. 

Contactless and mobile payments 

You can pay using your card, your phone or a smartwatch — Mastercard supports lots of easy ways to pay. 

Note: individual perks vary by provider, so not everyone gets the same extras. 

The main differences are: 

• Some shops accept one network but not the other (though most accept both in the UK). 

• Your card may come with slightly different perks depending on whether it’s Visa or Mastercard. 

• Your provider chooses which network your card uses — you can’t usually pick. 

Does Mastercard affect your credit score? 

Not directly. Mastercard has no say in your credit score. 

Your score is affected by how you use your credit card, not the payment network it runs on. So things like: 

• Making payments on time 

• Keeping balances low   

• Staying within your limit 

• Not missing payments 

…all matter far more than whether your card is Mastercard or Visa. 

Do I need to activate a Mastercard card? 

Most Mastercard credit and debit cards need activating before you can use them. Your provider will tell you how to do this — usually online, in-app or by phone. 

Activation helps: 

• Confirm the card reached you 

• Prevent fraud 

• Connect the card to your account 

Once activated, you can use it like any other card. 

Can I use a Mastercard abroad? 

Yes. Mastercard is accepted in many countries worldwide. It’s one of the most widely used card networks for travel. 

But before travelling: 

• Check if your bank charges foreign transaction fees 

• Tell your bank you’re going abroad (some still recommend this) 

• Keep an eye on exchange rates 

If you're using card machines that let you choose between “local currency” and “pounds”, it’s usually cheaper to choose local currency. Choosing pounds usually gets you a worse exchange rate. 

Is Mastercard safe to use? 

Yes. Mastercard has strong security features built in. These include: 

• Fraud monitoring 

• Secure online checks (like Mastercard Identity Check) 

• The ability to freeze your card if it’s lost or stolen 

• Purchase protection for certain card payments (Section 75 for credit cards, and Chargeback for debit and prepaid cards) 

But staying safe also means: 

• Keeping your PIN private 

• Reporting lost or stolen cards quickly 

• Using secure websites when shopping online 

Making the most of your Mastercard 

Using a Mastercard is simple — it works like any other card. But you can get the best out of it by: 

• Keeping track of your spending 

• Paying off your card on time (if it’s a credit card) 

• Using contactless or mobile payments for ease 

• Checking for any perks or protections your card provider offers 

Mastercard helps your card work smoothly, but how you use it is what keeps your finances healthy.