I need to finish 2016 taxes

[NCperson]

yikes!

if you are due a refund, it's 'fools gold' as the deadline to rquest a refund was April 15, 2020.  In this case, I wouldn't worry about filing. It won't make a difference. 

if you owe, you owe!  you can download the 2016 tax forms from the IRS web site.  TT doesn't support the 2-16 tax year any longer. 

[SweetieJean]

A few states have longer Statutes of Limitations for state refunds.