👉 In mathematics, an overcharge is a situation where one has more money than they actually have. This can occur when someone borrows too much or spends their money inappropriately without checking the account balance before making any purchases. For example, if you borrow $100 from a friend and spend it on groceries, you would be overcharged because your friend did not check the account balance first to make sure that you had enough money to pay for the groceries.