Can i void outstanding a/p checks from prior periods without affecting current year balances?

It's nice to see you posting today, 8105!

Let me help you with your checks. Checks are posting transactions, so voiding them will affect your records.

The one that you need to re-issue, is that a stale check? Stale or uncashed checks and replacements can be recorded this way: Create a bank deposit and categorize it as Other Current Liability (verify this with your accountant). Then, issue replacement check. Use the same Other Current Liability account in the Category details.

Your other check is likely to be voided because it was made by mistake. However, it's better to consult an accounting professional on what's the best way to handle it. Then, let us know if they have instructions that you find challenging to replicate in QuickBooks.

We're just right here to continue helping you. Take care and have a good one!

@8105 

No.  In the first case, make a deposit in the current period and assign the deposit to a bank Clearing Account.  If you don't have a bank Clearing Account in QB, set one up.  Then, reissue the check and assign it to the same Clearing Account.  When you reconcile your bank account, clear the deposit against the check you want to void (they will net to $0).  Clear the reissued check when it actually clears.

In the second case (the error), it sounds like you need to void the bill and the check, correct?  If that's the case, and it is from a previous period, create a deposit and assign it to the same expense account(s) that was on the bill.  That will reverse the bill in the current period and create a deposit that will offset the check issued in error.