You may be able to use the 529 money for more expenses than you thought. But you must take withdrawals in the calendar year you incur the expense. Getty Images By Kimberly Lankford, Contributing Editor November 21, 2018 QMy son is a freshman in college, and this is our first time using 529 money for his college bills. Do we need to withdraw money from his 529 for his 2018 tuition bills and other eligible expenses by December 31, or do we have a few months afterward to withdraw the money?SEE ALSO: How Well Do You Know College 529 Plans? AYou have to withdraw the money for 2018 expenses by December 31, 2018. “The expense and the distribution must be in the same year,” says Mark Kantrowitz, of Savingforcollege.com. This is a good time to consider all of the eligible 529 expenses you’ve paid during the year, so you’ll have time to make the withdrawals before December 31. You can withdraw 529 money tax-free for tuition, fees, and required books and supplies, as well as for room and board. Students who are enrolled at least half-time can even use 529 money tax-free to pay rent for an off-campus apartment (up to the school’s allowance for room and board, which you can find at the school’s website under the cost of attendance or by contacting the financial aid office). You can also withdraw money tax-free from the 529 if you bought a computer for your son this year. Keep in mind that you can’t withdraw money tax-free from the 529 now for next year’s expenses unless you’re billed for them this year. This timing is different from the rules for the American Opportunity Credit. You can prepay for expenses that will occur during the first three months of the year and still take the credit. “There is no similar language for 529 plans,” says Kantrowitz. (For more information about the American Opportunity Credit, see IRS Publication 970.) Advertisement If you’re still contributing to a 529, it’s also a good time to find out whether you need to make contributions by the end of the year in order to deduct your contribution on your state income taxes for 2018. Most states set a December 31 deadline, but Georgia, Mississippi, Oklahoma, Oregon, South Carolina and Wisconsin give you until April 15, 2019 (and Iowa gives you until May 1, 2019) to make tax-deductible contributions for 2018. See Savingforcollege.com's list of states with later deadlines. SEE ALSO: 6 Tax Breaks for College Costs Got a question? Ask Kim at email@example.com.