Customer Maintenance: Tax Reference field

[HDeriauFF]

My situation is actually very simple: I need to have my system to be tax exempt for all US states except NJ. How does webERP detect if the shipping destination is in or out of state to apply the rate?

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I think I figured it out. The destination is actually understood by the system by assigning a tax group to the customer branch. The system does not detect if in or out of state, you will have to tell him: this shipping address -> this taxing pattern.