Rules of thumb can be convenient – and dangerous. When at the butcher, it’s good to know that roughly half a pound of meat will feed a person. Using this rule of thumb helps ensure that your dinner guests don’t leave hungry or you don’t waste a few extra dollars per person.

But rules of thumb can also oversimplify important decisions and lead to incorrect answers. Case in point: the outdated adage that your portfolio's fixed income allocation should equal your age.

Register or login for access to this item and much more

All Financial Planning content is archived after seven days.

Community members receive:
  • All recent and archived articles
  • Conference offers and updates
  • A full menu of enewsletter options
  • Web seminars, white papers, ebooks

Don't have an account? Register for Free Unlimited Access