If i am billing using progress Invoicing, Why does Quickbooks charge local sales tax on items above the capped limit on each progress invoice?

I can guide you where you can see how QuickBooks calculates sales taxes on your progress invoice in QuickBooks Online (QBO), Matt.

Before proceeding, please know how QuickBooks calculates sales taxes:

• If your customer's sales tax-exempt status
• Where you sell and where you ship
• Your product and service sales tax category

Since the sales tax calculation is incorrect, we can use the See the Math option to determine how QBO comes up with the specific amount. It will allow you to edit the sales tax on the invoice page.

I've attached screenshots for reference:

If you've set up the address and product category correctly based on how QuickBooks calculates taxes but still have incorrect sales tax calculations, then let's check if this is a browser-related matter. Let's access your account using a private browser to prevent stored data from affecting unusual displays and behavior.

These are the keyboard shortcuts:

• Mozilla Firefox: CTRL + Shift + P
• Google Chrome: CTRL + Shift + N
• Safari: Command + Shift + N

If you can see the correct sales tax calculations when billing a progress invoice using an incognito, then it's safe to say that it's being caused by your browser. Let's clear your regular browser's cache to start fresh. Also, consider switching to other supported browsers as an alternative. 

If the issue persists, you can contact our Support Team to assist you further. They can initiate a screen-sharing session with their required tools to identify the cause of the problem.

Here's how to reach out to them:

1. Sign in to your QBO account.
2. Click the Help (?) icon.
3. Select the Search tab, then click Contact Us.
4. Select a topic and choose how to contact our support team:

• Via Callback, where they save you a spot and call you back
• Via Chat, to start a chatting session with our available expert

The supporting hours are available from Mondays to Fridays, 6 AM to 6 PM PT, and Saturdays, 6 AM to 3 PM PT for Plus, Essentials, and Simple Start. Advanced users will be at any time, any day.

As a workaround, we can modify the sales tax calculations by manually entering the amount to override the calculation.

Moreover, you can use this article to learn how to personalize your sales forms info: Customize invoices, estimates, and sales receipts in QBO.

Feel free to comment below with any other questions regarding sales tax calculations on the progress invoice. We're here to help you.