My husband’s nephew has not cashed two of our checks. We were trying to decide whether to call him, and ask if he lost them, and write another one for him, but a couple of years ago it took him a long time to cash one, we finally called, and he finally cashed it, so we have opted to say nothing this time. He is 17 and old enough to be responsible about these things, and his sister has cashed hers. I would be very happy if he had called and admitted to misplacing it, apologized and ask if it was ok to still cash it. We are very aware he has failed to cash it, we want him to have the money, that is why we wrote the checks to begin with, but question whether he is able to admit when he has made a mistake, able to apologyze when he has made a mistake, and correcting things like this in relationships. I worry about this because his family does not much believe in saying I’m sorry, or I screwed up, especially his mother, and I have a secret hope that the children will not inherit that trait. Now, my nephew has never written me a thank you card, and when he was younger failed to even call and say thank you at times, so I don’t think it is quite the same as the OP. Some of it might have to do with how different families and cultures function. My husband’s family leaves things unsaid all of the time and it drives me crazy. Always the elephant in the room. In my family I would call right up, or my grandma would have called me by now.
I think it might vary by state, you should be able to cash somewhere between 90 and 180 days after the check is dated. But, I think you should call, in case they have adjusted their accounting of their checking account already assuming you are not going to cash it.
We all have misplaced things, I think they will understand, and be happy to hear from you. I love getting texts and calls from my niece and nephew, which is very rare. I think if you were my granddaughter I would be thrilled you called.