How do I delete a deposit after it has already been reconciled in the bank?

You'll want to undo the reconciled deposit transaction from the account register in QuickBooks Desktop (QBDT) before you can delete it, @Kat93. We'll provide more information below to ensure your inquiry is addressed promptly.

Before anything else, please know that unreconciling a transaction from a reconciled bank account can cause errors within your balance. That said, you'll need to ensure that you've unreconciled the correct deposit transaction to avoid affecting your bank balance. Here's how:

1. Go to the Banking menu and select Use register.
2. Choose the account where you've added the deposit transaction and then click OK.|
3. Locate the deposit transaction and then in the Checkmark column, click on it until it removes the checkmark leaving it empty.
4. Once done, right click on the transaction and then select Delete Deposit.
5. Click OK.

For visual reference see the image below.

Feel free to check Editing completed reconciliations section in this article for more details about the process: Learn the reconcile workflow in QuickBooks.

You can also consider working with an accountant before removing the deposit transaction from the reconciled bank account. This way, they can provide other ways to handle this situation while ensuring your books remain accurate. If you don't have an accountant, I can help you find one. Feel free to visit this page: Find a QuickBooks ProAdvisor.

Please let us know in the comments section if you require further assistance navigating the task or handling banking transactions in QuickBooks. We'll always be around to extend a helping hand.