The holiday shopping season has already started for 2017, but some shoppers are still paying off their debts from last year's gift buying.

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NerdWallet looked at the spending and behavior trends of 2,000 shoppers and found that half of them will over spend or didn't have a budget at all.

16% of them still haven't paid off their credit card debt from last Christmas.

Here are some tips to follow to make sure that doesn't happen to you:

  • Make and follow a budget. Figure out what you can afford to spend and divide it by the number of people you're buying for.
  • Look for sales. Look for the items you're shopping for a head of time and look for deals and sales.
  • Pay debt right away. Don't let that balance on your credit card sit at the end of the month.

Read more at NerdWallet.