Although these part of the forums seem a bit dead, I'll add another submission in hope it helps someone.
Basically if you've been mugging and ram raiding all day on your Criminal and you've got a nice stash of cash on you and you want to give the money to your Enforcer as they might be your main character or for whatever reason...
Instead of just putting a rubbish item on marketplace and making your criminal buy it from your enforcer (therefore losing money due to taxes..)
Well here's a new way to do it without losing anything (Although there is a risk factor)
1. Get your Criminal, Go to a police station find a nice secluded spot (If possible) and do /logout and you will jump to character select screen.
2. Quickly log onto your enforcer and spawn in same district (obviously) at the same police station which your criminal logged out at.
3. Go to the same spot where your Criminal logged out at and you should hopefully see the stash of cash, and you can just pick it up and turn it in.
Obviously try and do it on a low populated server and find a police station that is on the edge of the map (Somewhere where know one really goes)
What happens is since you can't actually drop the stash of cash on your Criminal. The /logout will take your character off the server and the stash will just drop on the ground, Leaving it there for someone to find.
REMEMBER: Anyone can pick it up so be quick to avoid disappointment.