Where can I get old tax returns that I filed through Turbo Tax?

To access your prior year online tax returns sign onto the TurboTax website with the User ID you used to create the account - https://myturbotax.intuit.com/

Scroll down to the bottom of the screen and on the section Your tax returns & documents click on Show.  Click on the Year and Click on Download/print return (PDF)

If you used the desktop CD/Download editions installed on your computer, the only copy of your tax data file and any PDF's will be on the computer where the return was created.  TurboTax does not store online any returns completed using the desktop editions.

Or go to this IRS website for free federal tax return transcripts - https://www.irs.gov/individuals/get-transcript

For a fee of $43 you can get a complete federal tax return from the IRS by completing Form 4506 - http://www.irs.gov/pub/irs-pdf/f4506.pdf

I need my tax returns for the year 2018, after I click download and select the year 2018, gives the message:

Looks like you didn't file with us last year or you filed using a TurboTax product that doesn't include access to prior-year returns.

To download your prior-year TurboTax returns, just get started with your 2019 tax return in the TurboTax product that's right for you.

If you did not file a 2019 tax return using the TurboTax online editions, contact TurboTax support for assistance with this issue.  You should be able to download a PDF of the 2018 tax return even if you did not use the TurboTax online editions in 2019.

Use this website to contact TurboTax support during business hours - https://support.turbotax.intuit.com/contact/

Or -

Support can also be reached by messaging them on these pages https://www.facebook.com/turbotax/ and https://twitter.com/TeamTurboTax

Or -

Use this phone number and select TurboTax - 1-800-4-INTUIT (1-800-446-8848)