If I funded my dependent's 529 plan and used those funds to pay eligible education expenses, can I deduct the expenses on my federal return?

[Bsch4477]

You cannot claim any of the college tax credits, including the AOTC, based on expenses that were used to calculate the tax-free portion of a distribution from a 529 college savings plan. The AOTC may be claimed in the same year that a tax-free distribution is made as long as the same expenses are not used to calculate the tax-free distribution AND the American Opportunity Tax Credit.

For example, if you take $12,000 out of a 529 college savings plan to pay for tuition you cannot use that $12,000 of tuition expenses to claim the American Opportunity Tax Credit also.