A legal decision you make to allow a specific person to act on your behalf, or to make decisions on your behalf, if you are unable to do so. There are two types. Ordinary power of attorney is where you give someone the power to handle your financial affairs for you, but you continue to make decisions about your money. This depends on you continuing to have mental capacity to make these decisions. Lasting power of attorney is where you allow someone to make decisions on your behalf about your property and finances or health and welfare, if the time comes when you are unable to make these decisions for yourself.