Great question and impossible to know the facts. It is not like these guys declared their true income on the 1040's.

Tommy Gambino cut a check for $12M as restitution as part of his plea in 1992. That was a check and is close to $18 M in todays dollar, inflation adjusted.

Joey Massino forfeited close to $12M, much of it in cash.

I read Carlo's book about Gaspipe, and he was clearly an earner, but I have not seen a figure on any forfeitures.

When Accardo's house got raided, the Feds found a couple hundred thousand in cash, which he eventually got back. Not sure what year that was.

Michael Franzese claims to have been turning in millions a week on the gas tax scam. I cannot recall what his restitution payment was, but I believe it was around $12 - 15M. There is a report somewhere (NJ Crime Commission?) suggesting that Franzese made more money for any crime family since Capone.

The gas tax scam reportedly generated $1B - clearly the most lucrative scam in recent history.

I have heard the windows scam generated anywhere from $150 - $450M total - and that was spread between several families.

The Pizza Connection reportedly moved $1 $2B in heroin, which was divided between Italian families, Canadians (Montreal & Toronto / Hamilton) and I NY, primarily the Bonanno's with some going to the Gambino's.

Interesting that we have little info on guys from the Genovese's, who clearly have some big time earners but keep it low on the radar screen and do not get busted. You know the Chin, Benny Eggs, etc had a warehouse full of cash stacked away in a couple of places.