If you've set up passwords for your company file, you must
be the QuickBooks
administrator to apply for the Merchant Service for QuickBooks.
Go to the Intuit Payment Solutions web site.
You'll find lots of useful information here about applying for the service, fees charged for the service, and more.
To apply for the service, click the sign up link.
You'll go online, where you'll complete and submit an application
for the service.
What is the QuickBooks Merchant Service?
What is a merchant
Sign up to swipe credit cards
What you should know
before processing a credit card payment online
I already have the QuickBooks Merchant Service. How do I enter credit card payments?