You can sign up for a ClickBank account to begin working as an affiliate.
See the Signing Up For a ClickBank Account for the full signup procedure. In addition, the Taxpayer ID Requirement section explains the additional requirement for affiliate accounts.
U.S. based Affiliate accounts earning over $600 are required to have a taxpayer ID number of some kind linked to their account, at a minimum a social security number. If inputting a social security number, be sure to use the proper 9-digit format including dashes: 123-45-6789.
ClickBank encourages U.S. based Affiliates earning over $600 a year to obtain an IRS issued Employer Identification Number (EIN) to input into your account as a taxpayer ID number. If you do not have one already, you can get yours at the IRS website. Note that this is a free process. The IRS will either provide your number online, or mail it to you. Once you have obtained your EIN please be sure to key it in to all of your ClickBank accounts, in this 9-digit format: 12-3456789. This helps to simplify the year-end 1099 reporting requirement.
NOTE – The taxpayer ID number input to your account must match the payee name on the account. If you are utilizing a business payee name but reporting under an individual social security number, you will need to fax a completed IRS W-9 form to us at 559-210-0502. Include a cover sheet that indicates your account nickname.
If you are utilizing a U.S. address but are a beneficial resident of a foreign country, you will instead need to fax a completed IRS W-8ben form to us at 559-210-0502. Be sure to include a cover sheet that indicates your account nickname.