Its important that you file your 2018 taxes. You should go to IRS.gov to learn the best way to file delinquent
tax returns. Hopefully you are filing 2019 taxes on time.
You can probably get a download of 2018 tax program from TurboTax. I had to purchase one for 2017.
Next year when you file 2020, you will have great detail from 2019 from your TurboTax filing. So don't lose the source file from your TurboTax directory.
