Every credit card has a minimum monthly repayment amount set out in its rules, which you can find in the summary box. The minimum payment is calculated by working out what interest you've built up over the past month and then adding a small percentage of your total balance. If you have a small overall balance, there might be a fixed sum instead - for example, £5. As minimum monthly repayments are set at such low levels, it’s best to pay off more than this each month if you can. You’ll clear your debt faster and pay less interest too.