What is a credit card & how do they work?

Credit cards can help people manage expenses. They provide the freedom that modern life demands, allowing users to spend in an instant and settle the payments later. This approach can ease your budget and make it easier to manage your money, which explains why credit cards have become a preferred choice for many people.

However, it’s important to understand exactly what a credit card is and that credit cards are not a one-size-fits-all solution. If you find it difficult to pay bills on time, using a credit card could lead to a build-up of interest charges and fees, making your financial situation worse.

When used in the right way, credit cards offer benefits such as building credit history, earning rewards, and providing a safety net in emergencies. This guide will help you understand how credit cards work, giving you the knowledge to use them with confidence.

What is a credit card?

A credit card is a payment card that allows holders to borrow funds up to a certain limit to pay for goods and services. Unlike debit cards, which take money directly from your bank account, credit cards provide a line of credit that you can use and pay back over time. Each card comes with terms like a credit limit, interest rate (APR), and repayment conditions.

How do credit cards work?

Understanding how credit cards work can help you make the most of their many features. Here’s a simple breakdown of exactly how credit cards work, from application to repayment.

1. Credit Card application and approval

The journey with a credit card starts with an application. Whether you're applying for your credit card online or in person at a bank, you'll need to provide personal information, employment details, and financial history. The issuer will then review your credit report, income, and other factors to determine your creditworthiness. Based on this review, they decide whether to approve your application and determine your credit limit.

2. Making purchases with your credit card

Once you have your credit card, you can use it to spend both online and in person. When you use your card, the issuer will confirm that you have enough available credit before giving approval. The issuer will then pay the merchant for you, and the amount is added to your credit card balance.

3. Billing cycle

Credit card activities are recorded in a monthly billing statement. This statement includes all of your transactions, the total balance, the minimum payment due, and the payment due date. The billing cycle generally lasts about a month, and at the end of it, you’ll receive your statement.

4. Credit card Repayment

Your billing statement will show the total amount you owe, but you’re only required to pay the minimum payment by the due date to keep your account in good standing. However, paying only the minimum means carrying a balance to the next month, which will result in interest charges. To avoid interest, aim to pay off your full balance within the grace period. It's important to check the terms and conditions of your specific credit card agreement to understand the exact details of the grace period and any associated fees or charges.

5. Interest and fees

Interest is charged on any balance you carry over past the due date. The rate, known as the Annual Percentage Rate (APR), varies by card and your credit profile. Besides interest, other fees can apply, such as late payment fees, over-the-limit fees, and cash advance fees. Always read the terms and conditions of your card to understand these charges.

Find out more on Avant Money credit card interest and charges and the different credit cards on offer.

6. Managing your credit

Using a credit card in the right way can have a positive impact on your credit report. Here are some tips:

• Always pay your bills on time. Late payments can lead to fees and have a negative effect on your credit report.
• Whenever possible, pay your balance in full each month to avoid interest charges.
• Manage your Avant Money Credit Card from anywhere with your online Avant Money account.

Is a credit card right for you?

Now that you know how credit cards work, you need to decide if a credit card is right for you or not. Credit cards, when used in the right way, offer major benefits, including building credit history and earning rewards. However, they require management to avoid potential high-interest charges and fees. Understanding credit cards can help you leverage their advantages while maintaining financial health.

Avant Money credit cards come with a range of benefits which include:

• Money Transfers: Transfer funds from your credit card to your bank account when you need it. Enjoy the freedom to cover all your payment needs.
• 56 days of zero interest: By paying off your bill in full on time each month you can get up to 56 days interest-free credit when you make purchases on your Avant Money One Card or Reward+ Credit Card.
• Digital Wallet: Add your Avant Money credit card to your phone with Google Pay and Apple Pay.
• My Avant Money: Manage your card from anywhere with your online Avant Money account.

For those looking to make the most of these benefits, Avant Money offers credit cards to meet different needs. Explore our credit cards such as One Card and Reward+ to start enjoying the benefits of smart credit management today.

Discover more of our lending products today, Bankinter and Avant Money are there to support your financial goals.

Lending criteria, terms and conditions apply. Avant Money Credit Cards are only available to customers over the age of 18 and resident of Republic of Ireland. Rates correct as of 24th March 2026 and are subject to change.

Bankinter S.A., trading as Avant Money, is authorised by the Banco de España in Spain and is regulated by the Central Bank of Ireland for consumer protection rules.