To log in: Enter the Social Security Number for the taxpayer
listed FIRST on your most recent tax return and your password.
Use EIN for business returns, if applicable.

To request/reset password: Click Need a Password or Forgot Password
(below the Log In button) and enter the requested information. Click
Request New Password and check your email/phone for the password. 
Once you have the temporary password, enter it on the login page with your
SSN. You’ll be prompted to verify the contact information
we have on file, and to update your password at this time.