When a power of attorney is considered durable, it remains valid even if you become incompetent or incapacitated. An ordinary power of attorney expires if a person becomes unable to make his or her own decisions. Durable powers of attorney can be prepared either to take effect immediately or to go into effect only if and when you become unable to make decisions for yourself (a springing durable power of attorney).  The power of attorney form should indicate what kind of power of attorney you want. You may want to consult an attorney regarding the type of power of attorney you want.