How can I undo last bank reconciliation?

With QuickBooks Online (QBO), you'll have to manually remove each transaction from the reconciliation, kamran3.

When you undo a reconciliation, your account balances and financial reports for the last two years will be affected since it will unmatch previously reconciled transactions. If you're certain to proceed, follow these steps to undo your bank reconciliation in QBO:

1. Go to the Gear icon and select Chart of accounts.
2. Locate the account that has the reconciled transaction and click View Register.
3. Find the transaction and select it to expand the view. If the entry is reconciled, you'll see an R in the checkmark (✔) column. 
4. In the checkmark ✔ column, select the box with the “R” until the box is blank. 
5. Select Save, then Yes to confirm. Repeat as necessary.

Once you’ve unreconciled the needed transactions, go ahead and reconcile your account again properly.

On the other hand, since you'll be undoing two years' worth of transactions, you can invite your accountant to undo your reconciliation. They can use the special feature in their QuickBooks Online Accountant (QBOA) account to undo the entire reconciliation period at once.

Also, enhance your QuickBooks experience by partnering with our QuickBooks Live Expert Assisted team. With their expertise, you can simplify processes, boost productivity, and receive personalized guidance tailored to your business’s specific requirements.

Feel free to leave a comment on this thread if you have any additional questions or need further assistance. We’re here to help.