There's no exact percentage set in stone. Back in 2008 Gambino indictment, it was said the administration was receiving 10% of the family's income. That was after each captain had taken their share and kicked the rest up the ladder. Going back further, Accetturo balked when Amuso and Casso demanded 50% from the Lucchese family's crew in Jersey. Chin was said to take very little money off his captains because he was already a millionaire and didn't need it. From what I understand, you have more freedom as an associate. But you have more clout and often more earning potential if you're made.

The rule in New York is they only replace guys that have died. And maybe 2 at Christmas if they still do that. New guys have to be OK'd by the other families. This is to keep a relative balance and to make sure one family doesn't induct a bunch of new members and outpace the others. But that appears to be what the Bonannos did when they went from about 100 members up to as many as 150 by picking names out of the phone book, saying they had been members that had died, and using them as reasons to make new guys.