One item that is absolutely vital to an ironclad estate plan is an advance directive. An advance directive spells out your wishes regarding medical treatment in the event that you become incapacitated or incapable of making your own decisions.
Definition of an Advance Directive
Also commonly called a healthcare directive or healthcare power of attorney, an advance directive is simply a document with written legal instructions on medical treatment. It only takes effect if you become incapable of making those decisions on your own, such as if you are put in a coma, become incapacitated, etc. The purpose is to help medical professionals and caregivers make the right choices regarding medical treatment.