How to organize payments to legal entities correctly and through what service?

Question

Payment systems

There is an aggregator - that is, we.
It contains legal entities that can sell something to individuals.
We plan to take a commission on these sales (1-3%).

- we need to take money from an individual;
- and either immediately send them to the legal entity, or once a month, depending on the commission, if once a month it will be easier to organize, then it’s good;

How to organize it correctly? And, perhaps, there are ready-made solutions with an API?

Answer 1

There's also a topic with cashier's checks ...