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. Managing the Risk of Outliving Your Money Steps to help you sustain and grow your retirement savings. Principles of Preserving Wealth How federal estate taxes work, plus estate management documents and tactics.