You have to sign onto the
2018 account using the exact same User ID you used to create the prior year
online tax return. Enter your personal information in the 2018 Free
edition. On the left side of the screen click on Upgrade. Scroll down and
select PLUS More Help & Tools. Click on Upgrade Now (if Plus is
grayed out then you are already using Plus and only need to pay for the
upgrade)
To pay the TurboTax
online account fees by credit card so you can access your prior year online tax
returns, click on Tax Tools on the left side of the online
program screen. Then click on Print Center. Then click
on Print, save or preview this year's return. On the next
page, to pay by credit card, click Pay Now. On the next
screen just click on the Continue button. The next screen will show a
review of your Fees, click on Continue. Complete the next
screen to pay by credit card and click Continue.