Tax is not generating when creating a manual order.
For tax to generate on a product added to a manual order, the following steps must be taken when creating the manual order:
1. Go to the contact record
2. On the left-hand navigation pane, go to Sales & Marketing -> Orders
3. Click Add New Order
4. Fill in the name
5. Fill in the Zip/Postal Code in the Ship To Address
6. Fill in any other required fields
7. Save the record.
If the Zip/Postal Code is not filled in for the Ship To Address before the FIRST save, the tax will not calculate.