How Credit Can Work in Your Favour: A Guide to Using It Wisely
Published 5th of June 2017·Updated 13 April 2026
Reviewed by: Reviewed for accuracy April 2026
Credit is not inherently bad. Used carefully, a credit card can help you manage cash flow, build a strong credit score, and even earn rewards. The key is understanding how credit works so you borrow on your terms, not the lender's.
Short Summary
Paying your credit card balance in full each month means you pay zero interest, making it a cost-free tool for managing day-to-day spending. This is called "revolving credit" and it is one of the most accessible forms of borrowing available in the UK.
Using a credit card responsibly over time demonstrates to lenders that you can handle debt. This improves your credit score and helps you qualify for better rates on mortgages, car finance and personal loans.
Credit cards also offer consumer protections that debit cards do not. Under Section 75 of the Consumer Credit Act, if you pay between £100 and £30,000 for a purchase on a credit card and something goes wrong, the card provider is jointly liable.
The risks are real: carrying a balance and paying only the minimum each month can be expensive. A £1,000 balance on a card at 24.9 per cent APR, repaid at minimum payments only, could take years to clear and cost hundreds of pounds in interest.
What is revolving credit and how does it work?
A credit card is a form of revolving credit. You have a set credit limit, and you can borrow up to that limit, repay it, and borrow again. Unlike a personal loan, there is no fixed end date.
If you repay the full balance every month, the card issuer charges you no interest at all. This means you are essentially getting a short-term, interest-free loan for up to 56 days (depending on when in the billing cycle you spend). Using a card this way for regular spending and repaying it via direct debit costs you nothing.
How does using credit improve your credit score?
Lenders want evidence that you can borrow and repay responsibly. A credit card that you use regularly and repay on time each month adds positive payment history to your credit file, which is the single biggest factor in your credit score.
Credit reference agencies Experian, Equifax and TransUnion all record your payment behaviour. Each on-time payment builds your profile. By contrast, an unused account sitting at zero tells lenders very little about how you handle credit.
If you are new to credit or rebuilding after difficulties, a credit builder card from providers such as Aqua, Capital One or Vanquis is designed for exactly this purpose. Interest rates are higher, but using the card lightly and repaying in full each month can improve your score within three to six months.
What is the difference between revolving credit and instalment credit?
| Type | How it works | Common examples | Credit limit |
|---|---|---|---|
| Revolving credit | Borrow, repay, borrow again up to a limit | Credit cards, overdrafts | Flexible |
| Instalment credit | Fixed loan repaid in regular monthly amounts | Personal loans, mortgages, car finance | Fixed |
Instalment credit (such as a personal loan) typically requires a stronger credit history because the loan amount is fixed and larger. Revolving credit is more flexible and often easier to access. Both types, when managed well, contribute positively to your credit score.
What protections do credit cards offer?
Section 75 of the Consumer Credit Act 1974 gives you a powerful protection: if you pay for something costing between £100 and £30,000 on a credit card and the goods do not arrive, are faulty, or the company goes bust, your card provider shares liability with the retailer. You can claim a refund directly from your card issuer.
This protection applies even if you only pay a deposit on the card. It does not apply to debit cards or bank transfers, which is one of the most practical reasons to use a credit card for larger purchases.
What are the risks of using credit?
The main risk is carrying a balance you cannot afford to repay. If you only make minimum payments, interest compounds quickly. Most UK credit cards carry an APR of between 20 and 30 per cent. On a £1,000 balance at 24.9 per cent, making minimum payments of around 2 per cent per month, you could spend over a decade repaying the debt.
Other risks include exceeding your credit limit (which triggers fees), missing payments (which damages your credit score and triggers late payment charges), and applying for too many cards at once (each application leaves a hard search on your file).
If credit card debt is already a problem for you, StepChange and Citizens Advice both offer free debt advice. A debt adviser can help you work out whether a balance transfer, debt management plan or another option is right for your situation.
Are credit card rewards worth it?
Cashback and rewards credit cards can generate real value if you pay the balance in full every month. Cards such as American Express Cashback, Barclaycard Rewards and the John Lewis Partnership Card offer between 0.5 and 5 per cent back on spending. If you spend £1,000 per month on a 1 per cent cashback card and always pay in full, you could earn around £120 per year at no cost.
These cards make no sense if you carry a balance. The interest charged will always outweigh the rewards earned. Rewards cards are strictly for those who pay in full every month.
Frequently Asked Questions
Does using a credit card build your credit score?
Yes, if you use it regularly and repay it on time. Every on-time payment is recorded by Experian, Equifax and TransUnion and contributes positively to your credit history. Using the card for small purchases each month and repaying in full is the most effective approach.
Is it better to pay off my credit card in full or carry a small balance?
Pay in full every month. There is a common myth that carrying a small balance helps your credit score; it does not. Carrying a balance costs you interest and provides no credit score benefit. Paying in full avoids interest charges entirely.
Can I get a credit card with a poor credit score?
Yes. Credit builder cards from providers such as Aqua, Capital One and Vanquis are designed for people with limited or damaged credit histories. They typically have lower limits and higher APRs, but using one responsibly will improve your score over time.
What is Section 75 protection?
Section 75 of the Consumer Credit Act 1974 makes your credit card provider jointly liable for purchases between £100 and £30,000 where the retailer fails to deliver, delivers faulty goods, or goes out of business. You can claim a refund from your card provider directly, without needing to pursue the retailer separately.
How much of my credit limit should I use?
Keep your credit utilisation (the proportion of your available limit you are using) below 25 per cent. High utilisation signals financial pressure to lenders and can reduce your credit score. If your limit is £2,000, aim to keep your balance below £500 at the time your statement is generated.
Can applying for a credit card damage my credit score?
Each application triggers a hard search on your credit file, which can temporarily reduce your score by a small amount. Applying for several cards in a short space of time is more damaging. Use an eligibility checker (available on MoneySavingExpert and other comparison sites) to see your approval chances before applying; these use soft searches and do not affect your score.