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. Related Content Saving for College 101 Here’s a crash course on saving for college. Retiring Earlier Than Expected? What To Know Retiring earlier than expected can be disheartening. Learn steps that can help you smoothe the road ahead. Budgeting After a Divorce Divorce is the second most stressful time in a person's life. Here's some tips to get through it.