You do not need to pay anything to see the prior year AGI ... simply log using the same userID as you did for the 2017 return and you can get the AGI in the prior year info section ...
Try these steps to recover your User ID or password:
2. Enter one of the following:
o Phone number (recommended)
o Email address
o User ID
3. Follow the on-screen instructions.
Once you’re done, we’ll either send you a code to help you recover your account, or show/send you a list of accounts associated with your info.
· If you’re still unable to recover your account, select Try something else on the Account Recovery page. We’ll ask additional questions to verify your identity.
Keep in mind: Once you’re back in your account, make sure to include or update your phone number. Doing so helps increase account security and ease account recovery.
(If you're looking to access a prior year return, go here.)Related Information: