We approve most accounts in 48 hours from the time we receive your online application. Then we e-mail merchant application forms that you have to sign and fax back to us. So, in two days from your initial contact with us we'll have the application. Then, unless something is missing from your application, we approve the account within four business days. 

As soon as your Authorize.Net merchant account gets approved you will receive an e-mail with your Authorize.Net account logon information.