Change the Default Tax Code for New Customers

To change the default tax code for new customers:

In the Home window on the Setup menu, choose Settings.
Click on Customers and Sales, and then Options.
From the list in Tax Code For New Customers, select a tax code.
Click OK.

Note: You override these default settings when you enter a different sales tax in a customer invoice and customer record.

What do you want to do?

Change the type of tax code charged per item on invoices

Change the tax code in a customer record