The Rule of 72 Want to be Smarter With Your Money? Join our mailing list and get news and info to support your financial goals. First Name Last Name Email Address Thank you! Oops! Do you know how long it may take for your investments to double in value? The Rule of 72 is a quick way to figure it out. Share | Related Content The Cycle of Investing Understanding the cycle of investing may help you avoid easy pitfalls. A Taxing Story: Capital Gains and Losses Understanding how capital gains are taxed may help you refine your investment strategies. 5 Smart Investing Principles Principles that can help create a portfolio designed to pursue investment goals.