You’ll need to pay all pay in 3 payments on each consecutive statement in full by the payment due dates to pay no interest.
If you don’t make the full pay in 3 payment on time in any month, you’ll be charged interest on your account balance at the standard rate.
If you wish to pay less you can, just pay the minimum payment, and you'll be charged interest on the remaining balance.
You must pay at least the minimum payment on each statement you receive in full by the due date. If you don’t make the minimum payment in full or on time your account will be in arrears, which can affect your credit score. If you miss two minimum payments, you’ll be asked to pay a late payment fee of £7.50.
If you only make the minimum payment each month it will take longer and cost more to repay your balance.