On the user’s menu panel go to Common Infofolder then click Tax Class
Input Tax Class name on the blank row on Tax Classes screen
Click Save toolbar button
On the user’s menu panel go to Common Infofolder then double click Tax Class
Input record details ( Tax Class and Description ) on the blank row on Tax Classes screen
Check/uncheck Taxable field if record is Taxable or not.
Click Save toolbar button
If class is set to Non-taxable, by default all items on an invoice will be non-taxable. If class is taxable, it will then refer to the next level for tax data.