First----it is years too late to file a 2016 return and receive a refund. Any possible refund has been forfeited. TurboTax does not provide software for tax years going back past 2020, so you cannot use TT to prepare a 2016 return. If you OWE tax due for 2016, the IRS still wants you to pay, with interest and penalties.
As for your W-2--
W-2's come from employers. There is not a federal or national website that provides W-2’s.
You can get a wage and income transcript from the IRS: It will not show the actual W-2, 1099’s, etc, but will show the income information the IRS received. It will not, however, show your state information. It will only show the federal information.
https://www.irs.gov/individuals/get-transcript
Pay Social Security $126 per W-2:
https://faq.ssa.gov/en-US/Topic/article/KA-02501
(if you want to prepare on paper for free: )
PRIOR YEAR FORMS FROM IRS
2016
Form 1040 https://www.irs.gov/pub/irs-prior/f1040--2016.pdf
Form 1040 Instructions https://www.irs.gov/pub/irs-prior/i1040gi--2016.pdf
Form 1040A https://www.irs.gov/pub/irs-pdf/f1040a.pdf
Form 1040AInstructions https://www.irs.gov/pub/irs-prior/i1040a--2016.pdf
Form1040EZ https://www.irs.gov/pub/irs-prior/f1040ez--2015.pdf
Form1040EZ Instructions https://www.irs.gov/pub/irs-pdf/i1040ez.pdf
https://www.irs.gov/filing/where-to-file-paper-tax-returns-with-or-without-a-payment
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
**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.**
