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. Test Your Estate Strategy Knowledge Estate management can help ensure that your assets are transferred according to your wishes while managing tax issues. Principles of Preserving Wealth How federal estate taxes work, plus estate management documents and tactics.