How best to write off unapplied credit memos upon business closure. Have over $600 CM going back two years that have not been redeemed. How best to close/account for?

Let me help you remove the credit memos that will not be used anymore, @info10.

We can open each credit memo that you have created two years ago and delete it or void these transactions. Here's how:

1. Open the credit memo that you need to delete/void. 
2. Click More, then select Delete or Void.
3. Select Yes to confirm.

I also recommend contacting your accountant for further advise. This is to ensure that your books will be recorded accurately.

Please let me know if you have any other questions or concerns in regards QuickBooks. I'll be there to help.

bogus - obviously not an expert.