Hello there. I've got some information to share about finding a Sales Tax Liability Report showing each column's Totals in QuickBooks Online.

At the moment, QBO shows only the total amount for the Tax column. I recommend providing feedback for the summary of each column in the report to be displayed. Your suggestions will then go to our product developers for review. This helps them make your QBO experience better. Here's how:

1. Go to the Gear icon.
2. Select Feedback.
3. Type in your product suggestions. 
4. Lastly, hit Next to submit.

For future reference, open the QuickBooks Online Feature Requests webpage to keep track of request updates.

Alternatively, you can run the Sales by Customer Detail or Product/Service Detail report. Then, modify them to show your desired information. Here's how:

1. Open the Reports menu.
2. Search for the report and click to open it.
3. Set all the necessary filters.
4. Click on Customize, then go to Rows/Columns.
5. Hit Change columns and put a check on the following items (Tax name, Taxable Amount, Tax Amount, Taxable)
6. Once done, click on Run report. See the following screenshots for reference:

The Sales by Customer Detail report:

The Sales by Product/Service Detail:

Otherwise, you can export your report to Excel and make customizations from there.

I'll also add this guide for you to know more about managing sales taxes: Set up, edit, and deactivate your sales tax rate and settings.

Don’t hesitate to tap the Reply button below if you have other questions or concerns. I’ll be here to help. Stay healthy and always take care!