KEY POINTS:
Banks have increased the interest rates paid by hundreds of thousands of shoppers this year, even though the cost of borrowing set by the Reserve Bank has fallen almost a quarter.
Banking commentators say credit card interest rates have been slow to fall in response to drops in the official cash rate.
The result is that for many Christmas shoppers, the unpaid balances on their cards will cost them more than last year.
Will higher rates stop you using your credit card? Here is the latest selection of Your Views: