Ask HN: How to create a service similar to Patreon?

I’d like to create a service similar to Patreon, I know how to do the technical side but not so sure about financial side: how do I charge users to send the funds to other type of users (creators), while subtracting a small percent? Financial services company? Where can I find some relevant resources, and how can I narrow down my research so that I don’t have to read everything about all types of financial services but only more or less relevant info?

Source: news.ycombinator.com