Time value of money

The time value of money is the idea that a dollar today is worth more than a dollar later, because today's dollar can earn interest. Almost everything else in finance, from NPV to bond pricing, is built on it. Start with Future Value of Money in 9 Minutes and Accumulated Value Formula in 2 Easy Steps, then Future Value: Less Than 1 Year and Future Value Compounding. Flip it around with Present Value of Money in 17 Minutes and its two deep dives. Finish with perpetuities, then annuities: the basic annuity, the annuity due, the growing annuity and the delayed annuity.