Sorry---Champ @Mike9241 is correct. Any refunds for tax years 2016 to 2018 have already been forfeited, but if you owe tax to the IRS or your state, you still owe it with interest and penalties. And....get caught up on your tax returns--remember that someday your Social Security benefits may be affected if you have not filed your tax returns and paid tax owed. Have you filed returns for 2019, 2020, 2021 and 2022? (If not, you have also forfeited your 2019 refund).
Software for those tax years is no longer available from TurboTax. You can get the forms from the IRS site and prepare them by hand or you could seek local paid tax help. Do you even have all of the W-2's and/or 1099's, etc. needed to prepare your tax returns?
Each tax year has to be prepared separately, and must be mailed separately. Do not try to combine them in the same envelope when you mail them.
Remember to prepare your state returns as well—if you live in a state that has a state income tax.
https://ttlc.intuit.com/community/state-taxes/help/how-do-i-contact-my-state-department-of-revenue/0...
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/state received the return.
Federal and state returns must be in separate envelopes and they are mailed to different addresses. Read the mailing instructions that print with your tax return carefully so you mail them to the right addresses.
https://www.irs.gov/filing/where-to-file-paper-tax-returns-with-or-without-a-payment
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/i1040gi--2016.pdf
Form 1040EZ Instructions https://www.irs.gov/pub/irs-pdf/i1040ez.pdf
2017
https://www.irs.gov/pub/irs-prior/i1040gi--2017.pdf
https://www.irs.gov/pub/irs-prior/f1040--2017.pdf
https://www.irs.gov/pub/irs-prior/f1040a--2017.pdf
https://www.irs.gov/pub/irs-prior/i1040a--2017.pdf
https://www.irs.gov/pub/irs-prior/f1040ez--2017.pdf
https://www.irs.gov/pub/irs-prior/i1040ez--2017.pdf
2018
Form 1040
Instructions for Form 1040 (HTML)
https://www.irs.gov/pub/irs-pdf/f1040s1.pdf
https://www.irs.gov/pub/irs-pdf/f1040s2.
https://www.irs.gov/pub/irs-pdf/f1040s3.pdf
https://www.irs.gov/pub/irs-pdf/f1040s4.pdf
https://www.irs.gov/pub/irs-pdf/f1040s5.pdf
https://www.irs.gov/pub/irs-pdf/f1040s6.pdf
**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.**
