The online editions are only for tax year 2018. Clear the return and start over then enter your 2018 tax data when it becomes available.
If you have not paid for the online edition you are using, have not filed your tax return or registered the Free edition, then you can clear your return and start over. Click on Tax Tools on the left side of the program screen while working on the 2018 online tax return. Click on Clear & Start Over.
Go to this TurboTax website to purchase, download and install on your personal computer one of the 2017 desktop editions - https://turbotax.intuit.com/personal-taxes/past-years-products/
A 2017 tax return can only be printed and mailed, it cannot be e-filed.
If you don't have a full Windows or Mac computer to install the Desktop program on or you don't want to pay,
If you have a simple return, you can fill out the blank forms by hand for free.
Here are some blank forms & instructions for 2017
1040 <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/f1040--2017.pdf">https://www.irs.gov/pub/irs-prior/f1040--2017.pdf</a>
Instructions <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/i1040gi--2017.pdf">https://www.irs.gov/pub/irs-prior/i1040gi--2017.pdf</a>
1040A <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/f1040a--2017.pdf">https://www.irs.gov/pub/irs-prior/f1040a--2017.pdf</a>
Instructions <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/i1040a--2017.pdf">https://www.irs.gov/pub/irs-prior/i1040a--2017.pdf</a>
1040EZ <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/f1040ez--2017.pdf">https://www.irs.gov/pub/irs-prior/f1040ez--2017.pdf</a>
Instructions <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/i1040ez--2017.pdf">https://www.irs.gov/pub/irs-prior/i1040ez--2017.pdf</a>
2017 Tax Tables <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/i1040tt--2017.pdf">https://www.irs.gov/pub/irs-prior/i1040tt--2017.pdf</a>
Publication 17 Tax Guide for 2017 <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/p17--2017.pdf">https://www.irs.gov/pub/irs-prior/p17--2017.pdf</a>
Prior year returns can only be printed and mailed. 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.
And don't forget state.