You want to force transactions to calculate on the Destination address instead of the Origin (or a mixture) in QuickBooks.
- You will need to select "AVATAX-POD" instead of "AVATAX" for tax calculations.
- By selecting AVATAX-POD, it will validates with +4 zip code and puts the address from the Destination field into the Origin field.
Note: This is not recommended for mixed sourcing states. For further detail on these states: https://help.avalara.com/kb/000/Is_There_a_List_of_the_States_with_Special_Sourcing_Rules_within_the_Admin_Console%3F