The technical term for what you're referring to is demurrage, i.e. when money that is sitting unused automatically, in any account, has fees applied to it. It's

The technical term for what you're referring to is demurrage, i.e. when money that is sitting unused automatically, in any account, has fees applied to it. It's similar to "inflation", but instead of making new money, you take people's existing money. https://www.investopedia.com/terms/d/demurrage.asp https://www.investopedia.com/terms/d/demurrage.asp