How to sign up for a new Authorize.Net account
Existing Authorize.Net merchants looking to add an account should contact the company that set up their current account. Their contact information can be found within the Merchant Interface by selecting Merchant Profile in the main menu on the left under Account.
New merchants can get an account from one of our partners. Visit our reseller directory at http://www.authorize.net/solutions/merchantsolutions/resellerdirectory/ to find the partner that works best for you.
Or, if you prefer to sign up directly, you can set up a new account in a matter of minutes by using our online application located at https://account.authorize.net/activation/Boarding/Signup.