Estate Management 101 A will may be only one of the documents you need—and one factor to consider—when it comes to managing your estate. Share | Related Content When Do You Need a Will? When do you need a will? The answer is easy: Right Now. What is the Value of Your Business? Ascertaining the value of your business is important for a variety of reasons. Principles of Preserving Wealth How federal estate taxes work, plus estate management documents and tactics.