Time is money is an example of what?

Time is money is an example of when in time money is received. The present value of money can be different from its' future value; Interest, inflation, investments and if money will even be there in the future affects the future value of the sum. Also, opportunity cost, or the benefits given up to pursue a different option, can affect how much money is made and tells that person how his or her time can be better spent to earn the most amount of money in a certain amount of time, or how much money is lost when deciding to spend that same amount of time doing something else.