If a significant reduction in credit card fees leads to increased usage of credit cards, what is the likely underlying effect on the demand for physical money?

When people start using credit cards more because the fees have gone down, they may feel less need to carry cash. This is because credit cards offer a convenient way to pay for things without having to manage physical money. As a result, the demand for physical money, like coins and bills, is likely to decrease. For example, if someone used to keep $50 in cash for daily expenses but now prefers to use their credit card, they might only carry a small amount of cash for emergencies. Overall, as credit cards become more popular, fewer people will need physical money for their transactions.