With an IRS Online Services Account, you can access several tools on IRS.gov with one username and password. To get started…you'll use the secure access process to register. This will allow you to verify your identity so no one else can access your IRS online account. When you register, have this information available: Your email address. Your Social Security Number or Individual Taxpayer Identification Number. Your Tax filing status and mailing address. One financial account number linked to your name like: The last 8 digits of a Visa, MasterCard, or Discover credit card or account numbers from A student loan or A mortgage or home equity loan or A home equity line of credit or An auto loan. For faster registration, you'll need a mobile phone linked to your name. You can also choose to receive an activation code by mail, just remember that option takes more time.