When you're given power of attorney, you have been granted the authority to handle certain financial matters for another person, often a relative or close friend. How you must endorse checks as POA depends on state banking laws. It's a good idea to check with the principal's, the person who gave you POA, bank, brokerage firm or other financial institutions prior to endorsing any checks to ensure you use the preferred method.
Power of Attorney Endorsement
When you're given power of attorney, you're known as the attorney-in-fact or individual's agent. The American Bar Association recommends contacting a lawyer if you receive power of attorney, to make sure you know exactly what you can and cannot do in that capacity. As for check endorsements, the ABA states the agent should sign the name of the individual for whom she is acting on behalf of first, followed by her name as power of attorney, or POA -- or the opposite way around. For example, either endorse a check by signing John Jones, by Mary Jones under POA, or Mary Jones, attorney-in-fact for John Jones.