Hello, weslaughton.

Let me provide additional information and help you get back to business. 

The Sales Tax Liability report displays the following information:

• your company's total sales
• how much is taxable
• at what rate
• how much sales tax is currently due to be paid

The Reporting Method you set up for your sales tax setting will matter how QuickBooks pull up your payables. When you choose a Cash basis, this will show the profit or fees based on the payment date of your invoices and bills. On the other hand, the Accrual basis shows the income and expenses based on when you sent your invoices or got your bills.

We need to make sure to filter only the paid invoices and include the Tax Amount and Taxable Amount columns. 

Also, In the Sales Tax Liability report, only the invoices with taxable and non-taxable items will show under Gross Sales in QuickBooks Online (QBO). However, if the invoices have only non-taxable items, they will not show in the Gross sales section. This causes the gross amount doesn't equal the total sales for that period(tax and nontax). If matched make sure to assign the tax invoice within QuickBooks while if added categorized properly to the affected account. 

I'm adding this article for more information on how to customize a report: Customize reports in QuickBooks Online.

Once done customizing, you may want to consider memorizing the report. Doing so helps you save the current customized settings in QuickBooks Online. 

I'd like to share this reference that you can check out to guide you in managing your bank transactions together with smooth reconciliation: Categorize and match online bank transactions in QuickBooks Online.

Please let me know if you need more help with the Sales Tax report in QuickBooks. I'll be happy to lend a hand. Take care and stay safe.