How are we able to delete certain tags we don't use any more?

Good day, @prov3five_6.

We'll have to open the transaction to delete the tags that you don't use. Let me walk you through the steps:

1. Go to the Transaction menu.
2. Open the transaction with Tags.
3. Click the Manage tags hyperlink.
4. Choose the tags you'd want to delete then click the trash bin icon.

I've added a screenshot for visual reference.

You'll also want to visit this article to learn more about the workflow in QBSE: QuickBooks Self-Employed Overview.

Let me know if you have any other questions, I'm here to help. Have a good one.