If you cash it the bank keeps it. They usually don’t send you a check til all the details are worked out. I have never gotten a check like that. I guess f I did I would keep it or shred it. Not sure. They do it alot with car sales also. Send you a check for more than the car then ask you to give them cashYes, I know. So I'm wondering what you do with the check if someone does this, if they send you a check for more than the amount?