do personal checks expire?

[Michael]

I had 3 uncashed checks that accumulated over several years. One that I wrote to a nephew for Christmas 06 was cashed in August. My brother told me that my nephew found it as he was getting ready to go to college. There was nothing special about it when it came through-it just came through. So, I assume that they are good as long as the account is open even if the rules say they are only good for a period of time.