The Rule of 72 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. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Why Everyone Needs an Estate Strategy Do you have an estate strategy? You should. Critical Estate Documents Sound estate management includes creating financial and healthcare documents. Here's an inside look. A Primer on Irrevocable Life Insurance Trusts Irrevocable life insurance trusts can be important tools that may accomplish a number of estate objectives.