Bookkeeping Tips • October 31, 2026 • by Zachariah Smiley
In almost every QuickBooks cleanup I see, a month that was reconciled and balanced suddenly isn't anymore. Nobody meant to break it — someone edited an old transaction, deleted a duplicate that wasn't a duplicate, or recategorized an expense while working in the current month. The change was small, but the reconciled month no longer matches the bank statement.
QuickBooks Online has a simple protection for this: a closing date. Go to Settings, then Account and settings, then Advanced, then Close the books. Set the closing date to the last day of your last reconciled month and add a closing-date password. After that, anyone trying to change a transaction on or before that date gets stopped and has to enter the password on purpose.
That pause is the whole point. If a fix in a closed month is truly needed, you can make it deliberately, note why, re-reconcile if needed, and close the month again. Make locking the books the last step of every monthly reconciliation, and your finished months stay finished — no more quiet surprises waiting at tax time.
This is exactly the kind of thing I clean up and keep clean for Wichita small businesses — catch-up projects and monthly bookkeeping, quoted flat after a free look at your books.