When Do You Need a Will? When do you need a will? The answer is easy: Right Now. Share | Related Content 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 And the Executor Is The right executor may help ensure the distribution of your assets is done with as little upheaval as possible. Principles of Preserving Wealth How federal estate taxes work, plus estate management documents and tactics.