How can you reverse an expense? I need to keep the original expense transaction? I can't think of the correct way to reverse as there is no supplier.

Hi there, regor99. 

Thank you for reaching out to the Community. If you referring to the Reverse button, You can enter reverse by creating a journal entry. Once you save JE, you will see the "Reverse" button at the bottom. Click Reverse and will automatically reverse Debits and Credits.  

Then, you can delete your expense transaction. Here's how: 

1. Go to the Expenses menu. Then select the Expenses tab.
2. Find expense you want to delete.
3. Select View/Edit ▼dropdown in the Action column, then press Delete.
4. Tap Yes to confirm that you want to delete the transaction. 

Also, I'd recommend opening your audit log or use the advance search to check the transactions. You can refer to this article for more detailed steps on how to use the audit log: Use the audit log in QuickBooks Online. 

Drop me a comment below if you have any other questions about how to reverse a bank charge. I'll be happy to help you out.