When NetSuite calculates Tax on an invoice, does it calculate it for the entire invoice at the main line level, or can I find the tax total per line somewhere?

There is a new sales tax function that you can turn on, this looks like it will allow you to see that data. Otherwise you need to use a complicated saved search arrangement: invoice transactions, main line false and then use formulas to multiply the items tax rules by the amount. I made it work to report Sales tax to 5 states, each requires multiple saved searches. I need to investigate the implications of switching to the new method still.

Ask this in the Tax Channel...I'll reply there

Got it, thanks.