It's hard to say for sure. It depends on what the IRS has in their records for your 2015 taxes. If they determine you may owe tax for 2015, it will delay your refund. I suggest you call the IRS and notify them that you have filed your 2015 return by mail so they can make note of it in their records. To contact the IRS call (800) 829-1040. Customer service representatives are available Monday through Friday, 7 a.m. to 7 p.m. local time.
