No it is not too late--but you cannot use online software or e-file. Online preparation and e-filing for 2017 is permanently closed, Now you need to use desktop software and print, sign and mail your 2017 tax return. If you are getting a refund, there is no penalty for filing late. If you owe tax due, your interest and penalty has been accruing since the filing deadline of April 18, 2018--and the IRS will bill you later for that (TurboTax will not calculate interest or late filing penalties).
If you need to prepare a return for 2015, 2016, or 2017 you can purchase and download desktop software to do it, then print, sign, and mail the return(s)
https://turbotax.intuit.com/personal-taxes/past-years-products/
Remember to prepare your state return as well—if you live in a state that has a state income tax.
When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s. Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS received the return.
https://ttlc.intuit.com/questions/1900990-how-do-i-file-a-prior-year-tax-return
Note: Desktop software requires a full PC or Mac—it cannot be installed to a mobile device
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
