'\'The tax included field represent that the tax rate is applicable to the product if tax is enabled by administrator.nnIn this case, the admin is disabled the tax option. That is why the tax is displayed as 0. If the product\'s tax required field has the value as \"No\", then even if the admin enabled the tax option, there is no tax applicable. nnSo this field is coupled with the tax option set by the admin in backend.\''