"Writing off" old bills

I don't think there's a good way to do that.  Assuming the bills were paid, then there should be payments in your books. I can't think of a case where they could be paid without the company having actually paid them.

So, if they are paid, then if follows that there should be payments in your books, and if there aren't, then they should be created. And if they are checks and they cleared the bank, then they should be in the checking account register.

Is your case different?

Thanks for responding. Some of these bills are years old, and from significant vendors, who would not let multi-thousand dollar bills just drop (eg utility company). So I'm pretty convinced that these are paid. I know it doesn't make sense, but I think these are just old "stuck" bills that I need to write off.