When you transfer a credit card balance to your Barclaycard, or transfer cash to your bank account, you’ll usually enjoy a promotional interest rate. When you make a payment to your account, it’ll go towards paying off the highest interest rate first, then any transactions made against your standard purchase rate, and finally your transferred balance.
You can still benefit from up to 56 days interest-free on anything new you buy, after making a balance or money transfer, but you do need to pay off your main balance (excluding any promotional balances) in full by your payment due date. Don't forget to make at least your minimum payments on time, and to stay within your credit limit.
When you take out cash or make a cash-like transaction in the UK or abroad, you will not be charged any interest if you pay your main balance in full by your payment due date. You’ll receive up to 56 days interest free on cash and cash-like transactions. You can find more information about your cash interest rate on your monthly Barclaycard statement.
Remember, your simple standard rate moves up and down, in line with the Bank of England Base Rate.