Online is only good for the current year 2017 so you have to buy the Desktop Download program here https://turbotax.intuit.com/personal-taxes/past-years-products/
Or you can get the blank forms from the IRS and do them by hand for free. Either way you will have to print and mail prior year returns.
Here are some blank forms & instructions for 2016
1040 https://www.irs.gov/pub/irs-prior/f1040--2016.pdf
Instructions https://www.irs.gov/pub/irs-prior/i1040gi--2016.pdf
1040A https://www.irs.gov/pub/irs-prior/f1040a--2016.pdf
Instructions https://www.irs.gov/pub/irs-prior/i1040a--2016.pdf
1040EZ https://www.irs.gov/pub/irs-prior/f1040ez--2016.pdf
Instructions https://www.irs.gov/pub/irs-prior/i1040ez--2016.pdf
2016 Tax Tables https://www.irs.gov/pub/irs-prior/i1040tt--2016.pdf
Publication 17 Tax Guide for 2016 https://www.irs.gov/pub/irs-prior/p17--2016.pdf
What are you filing late? 2017 tax returns aren’t due until April 17.
@steffystef7 okay, I thought you were only asking about your 2017 tax return but you can file a 2016 tax return, see @VolvoGirl comment/ converted answer below.
Online is only good for the current year 2017 so you have to buy the Desktop Download program here https://turbotax.intuit.com/personal-taxes/past-years-products/
Or you can get the blank forms from the IRS and do them by hand for free. Either way you will have to print and mail prior year returns.
Here are some blank forms & instructions for 2016
1040 https://www.irs.gov/pub/irs-prior/f1040--2016.pdf
Instructions https://www.irs.gov/pub/irs-prior/i1040gi--2016.pdf
1040A https://www.irs.gov/pub/irs-prior/f1040a--2016.pdf
Instructions https://www.irs.gov/pub/irs-prior/i1040a--2016.pdf
1040EZ https://www.irs.gov/pub/irs-prior/f1040ez--2016.pdf
Instructions https://www.irs.gov/pub/irs-prior/i1040ez--2016.pdf
2016 Tax Tables https://www.irs.gov/pub/irs-prior/i1040tt--2016.pdf
Publication 17 Tax Guide for 2016 https://www.irs.gov/pub/irs-prior/p17--2016.pdf