POS Sales Taxes Not Calculating

In order to set the default taxes that will be used for POS orders, you will need to go to Admin -> Billing -> Sales Taxes -> General Sales Tax Info and set taxes under the Sales Tax Districts for Walk-Ins section.

If you need a different set of taxes for each sales location (Inventory Location setting under Additional Order/Invoice Options), you can add new tax groups on the same General Sales Tax Info page by visiting the Additional POS Tax Groups option.

For more information on the General Sales Tax Info settings page visit here.

For information on applying taxes to items visit here.