You can not do 2017 and prior using Turbo Tax. They only sell the last 3 years. You might want to go to a local accountant or tax place if you have a complicated return. For simple returns you can fill out the forms by hand. And it is too late to get any refunds.
Or If you have a simple return You can fill out the blank forms for free.
Here is the IRS 2017 Form 1040
https://www.irs.gov/pub/irs-prior/f1040--2017.pdf
And instructions https://www.irs.gov/pub/irs-prior/i1040gi--2017.pdf
1040A https://www.irs.gov/pub/irs-prior/f1040a--2017.pdf
Instructions https://www.irs.gov/pub/irs-prior/i1040a--2017.pdf
1040EZ https://www.irs.gov/pub/irs-prior/f1040ez--2017.pdf
Instructions https://www.irs.gov/pub/irs-prior/i1040ez--2017.pdf
2017 Tax Tables https://www.irs.gov/pub/irs-prior/i1040tt--2017.pdf
Publication 17 Tax Guide for 2017 https://www.irs.gov/pub/irs-prior/p17--2017.pdf
Don’t forget your state. And you will have to print and mail your returns. So be sure to attach copies of your W2s and any 1099s that have withholding on them. You have to mail federal and state in separate envelopes because they go to different places. Get a tracking number from the post office when you mail them for proof of filing.
