Taxes can be applied to sales orders/cash sales in NetSuite on order level.
In NetSuite taxes can be set up on customer level and the tax set up for customer will be automatically reflected in the sales order created for the customer. To remove these taxes, we can use the check box field ‘TAXABLE’.
If the field is checked, then corresponding tax will be added to the order. If Unchecked tax will not be added to the order.