Store Item Tax is required to generating PO & GRN.
Taxes are paid for store items based on its category.

How to Access:
Please follow the below steps to add store item tax

Individual Item Tax Configuration:

Screenshot 1: Add Tax Caption
Screenshot 2: Set default tax percentage and exempt setting on store level for an item

Bulk Sotre Item Tax Configuration:

Screenshot 1: Manually ( Add Tax percentage and apply it)

Screenshot 2: Via Export Data ( Add Tax percentage in downloaded excel sheet)

Screenshot 3: Import Data ( Add Tax percentage in downloaded excel sheet)

Screenshot 4: Your Tax will display here and later you can update latest tax on PO and GRN Screenshot 5: PO and GRN printing affected with this changes. 
Below reports are effected with this changes :

1 – Cost Detail Report

2 – Goods Receipt Note Tax Report

3 – Purchase Analysis

4 – Void Purchase List

5 –  Void Purchase Order List