A power of attorney, also known as a financial power of attorney, is a legal document that allows you to choose a person to handle your financial affairs. The document could be drafted to give your agent as few or as many of the powers you enjoy over your finances.
A power of attorney can be a delegation of power to your agent for a specific amount of time or for a specific task. Even if a power of attorney does not have an expiration date, it may be revoked at any time by the person giving the power of attorney.
A durable power of attorney is a power of attorney with special language that provides it will remain valid if the person making it becomes mentally incapacitated at a later time.