Credit card facts to tell your kids and teens

Credit card facts to tell your kids and teens

Some of the facts about credit cards are easily missed. Did you know, for example, you can say “no” to an interest rate change? Or that your card may not work abroad? If you didn’t, you’re not alone. Those details are more likely to be found in a card issuer’s small print. 


Legally, your teen can’t have their own credit card account until they’re 18. But some providers allow you to add your child as an authorised user on your account at a certain age. 


Either way, having a credit card is a lot of responsibility, so your kids and teens need to be armed with all the facts before they get their hands on one.


If you’re thinking of having that talk with them, here’s what they need to know. 


Credit card facts your kids should know


Interest rates, APRs and credit limits can be confusing for adults, let alone young people. First, make sure your kids understand credit card basics. 

Then you can dig down into the details with them, explaining:


  1. Credit limits can change
  2. There’s a minimum payment you have to pay each month
  3. Pay off your balance every month to avoid paying interest
  4. Credit cards charge extra fees
  5. Your interest rate can change
  6. You can refuse an interest rate change
  7. Most card issuers protect your payments
  8. Some credit cards come with perks
  9. Borrowing on a credit card impacts your credit report
  10. Too many credit cards can hurt your credit score
  11. Not all credit cards can be used abroad
  12. An alternative to credit cards for your kids.


1. Credit limits can change

Credit card companies set a limit on the amount you can borrow. This is called a credit limit. Say it’s set at £500. As long as your balance (how much you owe) never goes over £500, you can keep using your card. 


Your card company decides your credit limit, and they can change it whenever they like. If you pay off your statement balance in full each month, they may increase your limit. On the other hand, if you’re struggling to make regular payments, they might reduce the limit instead. 


Related: How to teach your child about credit


2. There’s a minimum payment you have to pay each month


You don’t have to pay off your credit card balance completely each month, but you do have to make a payment towards it. This is called a minimum payment. 


Your card issuer sets the amount of your minimum payment. It’ll either be a small percentage of your balance or a fixed amount. It depends on which is greater.


As a general rule of thumb:

  • If you owe over £1,000, your minimum payment is usually around 2% of the balance. 
  • If your balance is between £25 and £1,000 it will be a fixed amount. (This can vary from card to card, but it’s typically about £25.) 
  • If you owe less than £25, your minimum payment is likely to be exactly what you owe. So if you owe £10, that’s your minimum payment. 


3. Pay off your balance each month to avoid paying interest


Only making the minimum payment each month is not a good idea. You’ll be charged interest on the balance for as long as it’s outstanding. As interest can seriously add up, you could end up owing a lot more than you borrowed in the first place. And it may take you a lot longer to repay your debt. 


How much interest you’ll be charged depends on what your interest rate is. It varies from credit card to credit card. But according to data from the Bank of England, the average credit card interest rate in the UK is 22.2%


Try explaining it to your teenager this way:


Imagine you just left school and you’re heading off to university. You’ve just been sent a list of textbooks you need for the start of term, and they’re going to cost you £500.


When you worked out your budget for university, you forgot about textbooks. You don’t have £500 to spare, what with all the other expenses. How will you pay for them?


Say you buy them on a credit card with an APR of 22%:  

  • If you make the minimum payment of £25 a month, it’ll cost you £628 in total and take you 26 months to repay.
  • If you pay off £30 a month, it’ll cost you £602 in total and take you 21 months to repay.
  • If you pay off £50 each month, it will cost you £557 in total and take you 12 months to repay.


And remember, all the time you’re paying off your debt, you won’t have that money to spend on other things you need. 


4. Credit cards charge extra fees


As well as interest, credit card companies can charge other fees. 


Late fees


If you don't make your card payment on the due date, card companies charge you a late fee. If you don’t pay by that date, you will be charged a late payment fee (usually of £12).


To avoid late payment charges, you can set up a direct debit to pay at least the minimum amount every month. 


Pay your monthly statement balance on time and in full to avoid extra charges.


ATM fees


You can use a credit card to withdraw cash from an ATM, but think hard before you do.  When you use a debit card at an ATM, you’re withdrawing cash you already have in the bank. But whenever you use a credit card, you’re borrowing. 


Taking cash from an ATM with a credit card is known as a ‘cash advance’. You pay more interest on cash advances than on purchases you make with a credit card. You’ll also be charged a fee of between 3% and 5% every time. 

Avoid paying extra fees and interest. Use cash advances only in an emergency. 


Related: What’s the difference between a credit card and a debit card?


5. Your interest rate can change  


If your credit card company decides to increase your interest rate, it must contact you 30 days beforehand to give you time to decide what to do.


To avoid interest charges, pay off your balance in full every month. And regularly check your credit card balance and payment date. That way, if for some reason you can’t clear your statement balance, you can budget for what you’ll owe the month after. 


6. You can refuse an interest rate change


You should be given 60 days to reject a rise in your APR, cancel the card or transfer the balance to a card with a lower interest rate.


If you do say no, and stay with your card issuer, bear in mind, they can reduce your credit limit or increase your minimum monthly payment. They could even close your account. 


What card companies can’t do if you refuse a rate rise is a demand you pay off your balance immediately. You’re allowed at least five years to pay it off at your existing rate. 


7. Most card issuers protect your payments


Say you use your credit card to buy something online, and when it arrives, it’s faulty. Or worse, it never turns up at all. If you tried to work it out with the seller and they won’t budge, you can ask your card company to contest the payment and get your money back.


Under Section 75 of the Consumer Credit Act, you’re covered by credit card purchase protection if you use your card to buy goods or services that cost over £100 and up to £30,000. 


If you lose your credit card or suspect your card details have been stolen, report it to your card issuer immediately. You will be responsible for the first £50 of any sum spent on your credit card before you report it as stolen.


8. Some credit cards come with perks 


Some credit cards come with extra perks and rewards, like airline miles, cashback, travel insurance, rental cars, hotel stays, and gym memberships. It’s often on a points system. 


To tempt you into opening an account, card companies often have a welcome offer. You’ll earn extra rewards if you spend a certain amount of money in the first few months, for example. 


9. Borrowing on a credit card impacts your credit report


A credit report shows where you live and work and if you’ve ever filed for bankruptcy or been arrested. It also lists your bill payment history, loans, and current debt. Lenders use this information to decide if they’ll offer you a loan or a line of credit. 


Even if you pay off your credit card balance in full every month by the due date, your credit report may be affected – and not necessarily in a good way. 


That’s because card companies report to the credit bureaus in between statements. If your balance is more than 30% of your credit limit, it won’t look good to lenders. 


Of course, that’s only a problem if you’re thinking of applying for a loan at that particular time. And there is a way to avoid it. Keep track of your credit card balance and pay off transactions as soon as they appear on your account. 


10. Too many credit cards can affect your credit score


Your credit score is a 3-digit number worked out from your credit report that shows how responsible you are with money. Lenders use it to see if you’re a safe bet.  A high score can make it easier for you to get a loan or rent a flat, for example. 


If your card gets lost or stolen, having a backup may be useful in an emergency. But having too many credit cards – even if you never use them and they have zero balances – can lower your credit score. 


If there’s been no activity on your account for several years, there’s nothing to show how responsible you are with credit. So your card issuer may stop sending updates to credit bureaus. 


To avoid this, spend small amounts on your credit cards and pay off the balance in full on their due dates. 


11. Not all credit cards can be used abroad


Not all UK credit cards work internationally. So if you’re headed abroad on holiday, you’ll need to check your credit card is accepted in the countries you’re visiting. 


It’s also a good idea to tell your credit card company if you’re travelling abroad.  If you don’t, and they think the activity on your account looks suspicious, they may block your card.


12. An alternative to credit cards for your kids


Having talked about credit cards with your teens, you could get them used to making card payments with the GoHenry prepaid debit card and app for 6-18-year-olds. 


Unlike a credit card which lets you keep borrowing up to a certain limit, a prepaid debit card only works when the money is there to spend. GoHenry gives your kids financial independence and gives you peace of mind. From a single app, you can pay in money instantly, set up regular transfers (like your child’s allowance) and set spending limits. Plus, you get notified the second they spend. 


What’s more, our in-app Money Missions tool teaches kids how to be financial wizards through fun, age-appropriate, bite-sized lessons, quizzes and games.



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Written by Charlotte Peacock Published Dec 21, 2022 ● 4 min. read