Credit card vs debit card, what's the difference?

I remember watching TV shows as a kid and seeing adults casually pull out a shiny little plastic card to pay for dinner, shopping, or a coffee. It always looked so… grown-up. There was just something about tapping/swiping a card instead of handing over cash that made adulthood feel a little more posh.

Fast-forward a couple of years, and have officially started receiving pocket money. The best part? It comes with that shiny-looking piece of plastic! I remember holding it for the first time and saying “Wow! My first ever credit card!” only to get corrected by my mom “No, not a credit card, a debit card.” I remember being so confused, debit? Isn’t that just a different word for a credit card? Apparently not.

The reality is that different cards work in different ways . A debit card and a credit card might look almost identical, you can often use both to pay for the exact same things, but the money behind them works very differently.

So, what actually is the difference between a debit and a credit card? And why does it matter which one you use?

The answer comes down to one simple question - whose money are you spending?

💳 Debit card: your money

When you use a debit card, you're spending money that you already have: the money comes directly from your bank account.

For instance, if you have €100 in your bank account and spend €20 with your debit card, you now have roughly €80 left. Easy, right? Think of it like a digital wallet. Instead of carrying a huge roll of money around, the money sits safely in your bank account and your debit card gives you a way to access it. Chances are, you, dear reader, are a teen like me and you have a debit card.

This is why debit cards are so straightforward - you aren't borrowing anyone’s money or creating a debt, you're simply spending your own money.

💳 Credit card: borrowed money

A credit card works a tad bit differently.

When you use a cash card, you're essentially borrowing money from the card issuer (for example a bank) to make the purchase. Subsequently, you have to pay that money back.

For illustration, let’s say you have a credit card with a €500 credit limit. You buy that pair of shoes you have been wanting for so long for €100. You haven't directly taken €100 out of your bank account, you've only borrowed a hundred euro banknote through your credit card.

And before thinking that you can keep borrowing money like this forever, you'll eventually receive a bill showing what you owe. You'll need to repay the sum until a given term by your issuer. And that is where credit cards get a little bit more complicated.

You might be thinking, why would anyone want to borrow money? If credit cards means borrowing money all the time, why bother?

There are actually some benefits - credit cards can help you build a credit history, which can matter when you're older and want things like a loan or mortgage. Ultimately, some credit cards offer rewards: 

• Cashback, a small accumulating percentage that you’ll earn a percentage of back on each eligible purchase you make with the card.

• Points collected through purchases that can be redeemed for items instead of paying money. 

• Miles, think of it as points for flying. 1 spent euro = 1 flyable mile (or a kilometer if that’s what you prefer). Perfect for frequent flyers!

Just remember: if you don't pay your balance in full, the remaining amount can start accumulating interest. And credit-card interest can be expensive.

This means a €50 purchase can become a €75 one if you keep avoiding your balance. That's why a credit card isn't free money, it's borrowed money.

If all those explanations sound complicated, just remember this:

• Debit = money you have.

• Credit = money you borrow.

But which one is "better"? Neither card is automatically better, it depends on one’s needs.

The important thing isn't choosing the card that looks more grown-up.

It's understanding how the card actually works.

Because, looking like Kendall Roy and understanding your finances are two very different things.

And honestly? I'd rather stick to the second option, thanks!