<prompt> Human: So in 2015 I decided to do my taxes in my school. Big mistake because the tax person who prepped it never filed it and I didnt realize it till a year later when I needed to file taxes in 2016. The IRS said just file it and leave 2015 gross income at 0. I prepped it myself online but I didnt realize I never actually filed it. So Ive been to scared to file them since then but now I need to man up and get that done. My questions are these:Is it still possible to file taxes after 4 years?Will I get a return still for all 4 years?Is there a penalty for filing late?How would I go about filing late taxes?Thanks for the help guys. This is a throwaway account since its so embarrassing to talk about.  <response>: Is it still possible to file taxes after 4 years?Yes! Will I get a return still for all 4 years?No! You missed out on the refund for 2014, and if you dont get that 2015 return filed by April 15, 2019, you will miss out on that refund, too. Is there a penalty for filing late?There is no penalty or interest charge for filing a refund return after the return due date. If you owe, there will be assessments of the Failure to File and Failure to Pay penalties and interest. How would I go about filing late taxes?If you can access the 2015 and 2016 returns in your software, print them out and mail them in. You must attach your Forms W-2 to each return, and I would encourage you to mail them in separate envelopes. 