Things to watch out for

The late payment trap
Your statement will show that you must make a payment by a certain date each month. If you miss it, you may be fined a late payment charge and have your interest rate raised.

An easy remedy: ask for a Direct Debit form from your card issuer. You can then choose to pay off the full balance every month, or the minimum payment, automatically from your bank account.

The minimum payment trap
It's easy to slip into a pattern of paying just the minimum payment each month. But it means, of course, that interest is building up, month after month, on every pound you owe. You will be charged interest on the entire balance – not just the amount still left to pay. If you can't pay the balance off, at least try to pay a bigger amount each month. You can use a repayment calculator from Which? (an independent consumer body) to work out when you're likely to pay off your credit card bill and how much more quickly you could pay it off by making a higher monthly repayment – see Related links.

The cash trap
Don't confuse credit cards with debit cards when you're at a cash machine. If you use a credit card to withdraw cash, you'll normally be charged an extra fee every time. You will also start paying interest immediately on the amount you withdraw and the interest may be higher than for purchases. You should also check how your payments are allocated – see Allocation of payments – as this more expensive borrowing may be the last to be cleared when you pay your bill.

The store card trap
Many leading shops and stores have their own cards. They are not the same as credit cards as you can only use them in their own stores or groups of stores. They offer benefits such as extra discounts for cardholders only, and preview days for sale goods ahead of the general public.

Credit card cheques
Some credit card companies send you blank cheques to use, mainly in situations where you would like to use credit to pay but the supplier does not accept credit cards. Credit card cheques are used in the same way as normal bank cheques, but any money you spend using them is added to the amount you owe on your credit card rather than coming out of your current account. This means you will pay interest on it, usually from the day the cheques are used. In addition, you may be charged a handling fee by the credit card issuer (usually a minimum of £2 or 1 or 2%).

Using your card abroad
Before you go, tell your credit card company you may be using your card abroad. Otherwise they may think your card is being used fraudulently and so block your card transactions.

If you withdraw cash or make purchases abroad, you may have to pay a fee and foreign exchange rates. This cost is likely to depend on the value of the transaction. This is on top of any interest or fees you have to pay normally. See our Travelling abroad guide.

Other ways to borrow
Credit cards have their advantages, but they're not always the right choice. If you can't pay for what you're buying and need the help of some extra funds, consider a bank overdraft or a personal loan – see Loans for more information.