A term originally coined by Mistress Amelia Marx that became popular through research and use of the term in media and on the internet in the early 90's.
Financial Domination stemming from a fetish of financial slavery or to be Dominated in a financial way. Miss Marx found this to be a natural extension for any Professional Dominatrix who is already being paid for Fetish services, and began to exploit it with clients who shared her fetish.
She said that some of her clients were aroused as much by giving money to a Dominant woman, as they were by any fetishes they may have been coming to see her for. And, that she was indeed aroused from their financial worship. She began to study the nature of the fetish, or fetishes, behind financial arousal and put it to use in her lifestyle.
Today, her work has spawned an entire cult fetish, and type of Domination. Terms like moneypig, wallet rape, money slavery, and more all came from her early exploitation of this very real fetish with her clients.
Miss Marx noticed his instant erection as he handed her the money for their session, realizing his enjoyment of Financial Domination. This was a moneyslave.
The moneyslave enjoyed Financial Domination. There was no better high, for him, than taking care of his Mistress, and allowing her to own him so completely.