Possibly fearing retaliation by the IRS, many taxpayers do not take advantage of certain available deductions. You do have a legal right to take these deductions without fear of an IRS audit.
When you think of Tax Day, you probably think of April 15. And, in most years, you'd be correct. But 2017 has a different deadline due to some scheduling quirks caused by holidays, so Tax Day actually falls later this year.