Unfortunately, you can't, and if you have an existing power of attorney, it becomes invalid upon the death of the principal—the individual who gave you the right to take certain actions on his behalf. read more
In my durable power of attorney for my dad, my lawyer added a paragraph which stated my authority carried on after death. Which saved a lot of trouble later on, get your attorney to add this. read more
Your power of attorney "dies" with the person. If you are the executor and on the bank account, you can usually still write checks. But if you are not executor and writing checks as power of attorney for a dead person, it's not really legal. Banks are not supposed to honor power of attorney after death. read more