What is the name of your state (TN)? My father has pancreatic cancer and is at the point where treatment is no longer working? He has a will that simply states all assets are divided equally among his three daughters. The only assets he has is a life insurance policy (he just found out he had this it is part of a pension plan and he was unaware of the benefit so we are in the process of finding out who is the on it as the benificiary now) and his accounts at the bank which are a money market account and his checking. He recently had me added to his checking and money market account so that I could write bills and transfer money in the event he was too sick to do so. My question is since I am now seen as a joint owner of the the account what will this do to the will if anything? I don't want to cheat my sisters out of anything or cause anyone to pay taxes when we go to split things and the IRS say I am giving them my money instead of my Dads money since my name is on the account also.