financial domination
A type of play that is centered around the dominant taking money from the submissive or otherwise controlling their finances, whether that is creating a budget for them, limiting their spending, or creating financial contracts. Although totally consensual, the basis of this kind of play is that the submissive is forced to hand over money, which involves a certain degree of humiliation. This kind of play can, but does not always, involve blackmail. A submissive who participates in financial domination is often referred to as a finsub, human atm, or wallet.
Money is power, and power exchange is hot, so it's no wonder financial domination is such a turn-on. I love draining a sub and watching my accounts grow. Give up control and open that wallet wide for me to take whatever I want.