I mean on pay day, which one makes the most? Whats the highest pay day possible? Doing the missions increase the pay day?
It actually depends on what type of business you start up. Usually, the Drug, Smuggling and Robbery Jobs earn pretty much more than the others. If you build them up to "High Roller" you earn a bit more money. Don't forget that you also have to do some of the missions on their too, I believe you get more money if you complete all the missions and receive a new rank.