CHICAGO (CBS) — You have a few extra days to file your federal and state taxes this year.

Normally, the deadline is on April 15, but because that falls on a Saturday, and Monday is a holiday in the District of Columbia, the deadline is on April 18 for both federal and state returns.

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“For the 4 million taxpayers who have already filed their 2016 Illinois Individual Income tax returns, and have received refunds totaling over $760 million,” said Terry Horstman, Illinois Department of Revenue.

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And it seems about 87 percent of Illinois tax returns were e-filed this year.

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After filing your Illinois return, you should get your refund in about four weeks, if you are expecting one.