Is it possible to auto-populate the sales tax when the new Invoice is created or updated, while the tax is coming from third-party app(Avalara) in Quickbooks Invoice?

Hello Mehnaz!

Sales tax calculation is a very important feature, and I think the automatic calculation is possible as explained in the app. However, I can only speak for our Sales Tax feature. We don't have much details about third-party apps because they have different setups and they work differently.

The best support who can give you more details about this is the Avalara support team. Please find their contact details here.

We'll be happy to answer more questions from you. Simply add a comment below.

The Avalara people told that QuickBooks has limitation for 3rd party apps to calculate the Sales tax automatically.

Tha Avalara is limited by Quickbooks to calculate the sales tax automatically.