Can I export 10 transactions, add a tag in excel, and re-import them into QBO ?

Thanks for checking this with us. Let me help solve your issue, Hosthub.

QuickBooks Online (QBO) only allows manual tagging of transactions. In that sense, I suggest using a third-party application that can help import transactions with tags ready into QuickBooks.

Otherwise, you can visit our QuickBooks App Center to look for a third-party application that can help import payroll transactions into QBO.

Here's how:

1. Select Apps from the sidebar menu.
2. Go to the Find Apps tab.
3. Enter a keyword in the search bar or click the Browse category button to filter the results.

Also, you'll want to check out our Help Articles to help you with the tasks and tips when using QBO.

Feel free to go back to this thread if you need anything else while working with transactions. Have a good one.

"QuickBooks Online (QBO) only allows manual tagging of transactions"

This is not correct. If you visit the tags page in QBO (https://app.qbo.intuit.com/app/tags) you can bulk tag many transactions in one click. The problem is that this page does not have a filter per bank. 

I will try to find a 3rd party app to do this.