Is my wife cheating if she hides bank account and credit card account statements LEGALLY CAN SHE DO THIS IF SOME OF THEM ARE JOINT?
This is a hard question to answer. It is better to not try and guess if she is or isn't cheating. If you suspect she is cheating perhaps you should ask her about it. She can hide bank accounts from you if it is only in her name. If it is a joint account and your name is on the account you have a right to be able to view the account details.