Once you have registered for an account and logged in, you may view or add TAX ID numbers (TINs) to your account from the Manage Tax IDs tab. Mouse-over the thumbnail to the right for an example of this tab.
The screen consists of a list of your Current Active TINs, fields for adding addition TINs, and buttons for adding or deleting TINs.
To associate a new Tax ID number (TIN) with your login:
After validating the bill's information, the TIN will be added to the list of Current Active TINs at the top of the page.
To remove a TIN from your account: