For a quick review see my article on and just click the link.

For a quick and easy calculator.  Click this link to SmartMoney.

Remeber, no web based tool can replace specific advice from your professional advisors after a thorough review of your goals and assets.  Please also make sure that your assets are held in a way to optimize the estate planning documents you have created.  Many wills, trusts, and estate plans fail to acieve their primary goals becasue of this problem.
David M. Frees, III
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Attorney, Speaker and Author