how do I add a receipt to a transaction that I have already categorized?

I recognize the importance of accurate record-keeping, ensuring all related documentation is in one place for reference and compliance, @hjryan6. Let's attach a corresponding receipt to a previously categorized transaction in your QuickBooks Online (QBO) account.

Account registers in QBO contain all categorized transactions, assigning them to specific expense or income accounts. This feature also allows you to edit the details of transactions as needed.

We can utilize this functionality to locate and modify the transaction you wish to update. Here's how you can do it:

1. Go to the Gear icon and select Chart of accounts. 
    
2. Choose the correct account register where the transaction has been categorized and hit View register.
3. Locate the entry to which you intend to attach the receipt.
4. Click Edit and navigate to the Add attachment options.
5. When done, pick Save or Save and close.

I'll share this article to help you categorize bank transactions efficiently: Categorize online bank transactions in QBO.

You can also set up a bank rule to automatically categorize transactions on your behalf.

If you encounter any challenges with attaching receipts in QuickBooks, you can post here anytime. We're always ready to help you out, @hjryan6.