The short answer is that you can't do it with Auth.NET
The good news are that you CAN implement such a behavior with other payment processing solutions - by taking advantage of their affiliation system.
Question
I'm developing a B2C site where many shop enroll with the site and sell their products. The Site owner needs to get a 5% of the sales done through their site from the sellers. That is when a customer buys product for $100, $5 must be credited to the site owner's Authorize.net account and 95$ must be credited to Seller's Authorize.net account. Does Authorize.net has this option already.
Solution
The short answer is that you can't do it with Auth.NET
The good news are that you CAN implement such a behavior with other payment processing solutions - by taking advantage of their affiliation system.
OTHER TIPS
You can Try Paypal for achieving this task.