Payments: How to setup Authorize.net

If I am creating an Authorize net online form and I want to accept payment - do I have to sign-up for Authorize.net before I create my form or is that done through

Yes, first you will need to signup with your payment processor. For authorize.net you can signup here:

https://www.authorize.net/solutions/merchantsolutions/pricing/

Then you will be able to use Auth.net payment integration. 

https://apps.jotform.com/app/authorize.net

You will need to configure your integration. So here's a guide to help you. (Note that although it uses Paypal in this example, the procedure is nearly identical for Auth.net)

Setting-Up-Your-First-Order-Form