In the "Name and Pricing" tab of the product wizard (product in edit mode), you have an option to check for tax in the "Product price" section.
- If you leave it unchecked, the product will display the price without any tax.
- If your tax is setup to zero (in BILLING tab > Settings > tab "Currency & Tax"), the product will display the price with zero tax (equivalent to no tax).
- If you tax is different than zero, the product will display the price plus the tax to visitors or logged clients who do not have a different specified tax.
- If a logged client has a different tax than your tax (in CONTACTS TAB > Contact Name > Profile tab > option "I want to use a different VAT" with a different value specified), the product will display the price plus the client's specific tax.