It was also found that people aged between 16 and 24 were the most unlikely age group to plan and budget the amount of money they spend.
Discussing the findings, Halifax's head of credit cards, Ken Stannard, said: "Our research shows shoppers could be paying too much interest on their Christmas purchases.
"Offering customers our longest ever deal on purchases, savvy shoppers can spread the cost of their purchases and not pay any interest till 2009 leaving them free to enjoy the festivities."
The research into credit cards has been released several days after the Co-operative Bank launched the world's first "ethical" credit card.
Called the think card, the product offers users a special interest rate of seven per cent when they shop at "ethical partners" to the scheme, including Ikea.
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