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. Problems with Probate Probate can be a completely public process, or it can be managed to include as little information as possible. Principles of Preserving Wealth How federal estate taxes work, plus estate management documents and tactics.