Here’s how the Rule of 72 works: Divide 72 by your expected annual interest rate (as a percentage, not a decimal). The answer is roughly the number of years it will take for your money to double. For ...

The Rule of 72 is a simple calculation tool for investors to use, but it's not necessarily the most accurate. Here are some ...

Learn what compound interest is, how it’s calculated—from annual rates to continuous compounding—and why it’s powerful for savings (and dangerous for debt).

Warren Buffett and Charlie Munger explain how to calculate intrinsic value, a crucial element of Buffett’s value investing strategy. Learn about long-term investment and future cash flows.