Q: Can a son who is power of attorney draw money out of his dad's account after he dies? Dad did not name an executor for his will.
A: Upon the death of the "principal" (that is, the person signing the power of attorney), the power of attorney terminates. So the fact that the son was named as the "agent" (the person named to assist the principal) is of no further importance once the father dies. In order to access the bank account now, the son must either have been named as the POD ("pay on death") beneficiary, be the surviving joint owner of a jointly owned account, or be forced to go through a probate process.
If the father had a will but did not name an executor, the son can petition the local probate court to be appointed as the executor, which would then give him access to the account.
If for some reason the appointment of the son as executor is opposed by someone else who wishes to be the executor, the fact that the father named the son as agent under his power of attorney can be used to support the son's appointment.
More information on POA,wills and trusts: