Top of main content

How do credit cards work?

Are you looking to apply for a credit card, but don't quite understand how they work? Here are some of the key things to know.

Credit cards can be incredibly convenient for big purchases or to pay bills. Understanding credit card basics and using them wisely can help you to maximise savings, avoid additional charges and build your credit history.

This short guide covers the most common questions about how credit cards work and what to consider when applying for a credit card.

What is a credit card?

A credit card allows you to buy things now, and pay for them later – either in full to avoid paying interest, or in monthly instalments. You’re able to spend up to a certain amount on the credit card. This is known as your credit limit. 

Credit card bills explained

A credit card statement is a summary of how much you have charged to your credit card during a billing period. It will also show you:

  • How much you paid the previous month
  • The repayment amount you need to make
  • Your repayment due date

When you've used your card, a minimum payment is required monthly by the due date. Failure to do so in a timely manner will incur finance charges on the remaining unpaid balance.

The credit card issuer will usually send your monthly credit card statement at least 20 days before your credit card payment due date.

Advantages of using a credit card

There are several advantages to having a credit card, as long as you use it responsibly. 

You can:

1. Spread the cost of a large or expensive purchase

Want to book a holiday or buy a new sofa? You can choose to split your purchases and enjoy flexible, interest-free repayments, such as with HSBC PayLater. The HSBC Spend Instalment also allows cardholders to combine multiple credit card transactions into a single instalment plan (minimum SGD500) and spread the repayment over 12 months, interest-free. A processing fee of up to 5% may be levied for Spend Instalment.

2. Build your credit history

Without credit history, banks are unable to assess how well you can manage debt. A credit card can help you build up your credit score and create a good record of paying off debt. 

When it comes to applying for larger loans like a mortgage, this can help prove you're responsible. Your credit score may be harmed if you don’t keep to the terms of your credit card agreement.

Explore: Should I save or pay off debt?

3. Earn travel rewards and cashback

Spend in eligible categories, like dining and grocery shopping, to earn cashback and base point with some selected credit cards. Save further with our HSBC card promotions, including complimentary one-for-one offers locally and overseas, as well as deals in: 

  • Dining and takeaway
  • Travel, leisure and car rental discounts
  • Retail shopping

If you're using an HSBC TravelOne Credit Card, you may also redeem your card's points instantly[@cards-instantly] with a wide range of airline and hotel partners via the HSBC Singapore app. 

On top of that, selected credit cards like the HSBC Visa Infinite Credit Card and the HSBC TravelOne Credit Card come with lounge access for added convenience and comfort when you travel.

4. Protect your purchases (and yourself)

Credit cards can be one of the safest ways to pay. You can also set up security notifications and One-time Password (OTP) alerts for credit card transactions. Misplaced your credit card? With HSBC, you can block it temporarily with one tap through the HSBC Singapore app.

Plus, you can turn on push notifications for the HSBC Singapore app so you'll receive alerts for your credit card. This way, you can stay on top of your card transactions more easily.

Some cards offer extended warranties and purchase protection. Items purchased with a credit card may be covered for damage or theft, for up to three months. Terms and conditions vary by lender. Travel with peace of mind with the HSBC Visa Infinite Credit Card. The premium luxury lifestyle card comes with complimentary worldwide travel insurance coverage of up to SGD2.75 million for both you and your family.

Explore: Protecting your identity

5. Access credit when it's needed

It's a good idea to build up an emergency fund. However, a credit card can help cover repairs or unexpected expenses should something happen.

Tip: Set a reminder to pay your credit card bill to avoid late fees and charges.

What is credit card interest?

Interest is the money you pay for borrowing with credit. The good news is that you won't be charged interest if you pay off the balance on your credit card every month.

When interest is calculated, the lender will look at: 

  • The amount you owe, multiplied by
  • The interest rate of your credit card, multiplied by
  • The number of days it takes you to make the full payment

There are some transactions, such as cash withdrawals, which you may still be charged interest on, even if you repay your balance in full each month. Always check your credit card terms and conditions to see what types of transactions you’ll be charged interest on. 

Things to note about credit cards

Before you apply, choose the card best suited for you based on your needs and spending habits. Here are some extra pointers to take note of when considering credit cards:

How will you handle temptation?

With a credit card you may be able to spend more than you’re comfortable with. Before taking one out, consider how you’ll handle any temptation and whether it’s the right option for you. If you decide it is, then you could set yourself some rules for spending. These can be simple things such as to only spend within a certain amount each month, or to only use it for emergencies or big purchases.

What are your spending habits?

You won't need to worry about interest if you're planning to pay your credit card off in full every month. But if you’re going to carry a balance, it may be worth looking for a card with the lowest interest rate available. Keep in mind that you don’t want to be setting yourself up with long-term debt. Carrying a debt indefinitely is not what a credit card should be used for.

Explore: Creating a budget

Do you know what the credit card fees will be?

Some credit cards charge an annual fee and charge for certain types of transactions, such as cash advances, making a balance transfer or using your credit card overseas. 

Paying in a foreign currency with your credit card? The amount may be changed into your local currency automatically, for a fee. This is called dynamic currency conversion (DCC)

You could also be charged a fee if you go over your credit limit or make a late payment. This could harm your chances of getting credit in the future.

Explore: 9 essential foreign exchange travel tips

Credit card eligibility

You can apply for an HSBC Singapore credit card if you are:

  • At least 21 years of age
  • A Singaporean or permanent resident with a minimum annual income of SGD30,000, OR
  • A foreigner residing in Singapore with a minimum income of SGD40,000

A minimum annual income of SGD120,000 is required for all applicants of the HSBC Visa Infinite credit card. Some credit cards may have additional eligibility requirements, for example the HSBC Premier Mastercard Credit Card is only available to HSBC Premier customers.

Before applying for any credit card, check the terms and conditions and the eligibility requirements. An application that’s refused may impact your credit score.

International credit history

If you're a foreigner employed in Singapore, it may be helpful to prove your credit worthiness by providing your credit history from your home country/region. When you apply for a credit card online at HSBC, you may choose to provide your information and consent for us to access your overseas credit history. We'll use the information when processing your credit card application.

Learn more

You might also be interested in

Learn what a credit score is, how to check it, and steps you can take to boost yours.
Instant reward redemption with an extensive selection of airline and hotel partners.
Learn what credit card rewards are and how to make the most of them to save money.

Notes