Per-quantity discount on individual items. Introduction. Tally. ERP 9 only allows you to apply discounts at the item level; with this add-on, you can apply discounts to the same invoice on a percentage or value basis. You choose when you want to pay for the item on the bill.
Setup: Make sure you're in the Tally Gateway.
Navigate to Tally's Gateway> Accounting Vouchers> F8: Sales. The Quantities column is divided into two columns, as you can see.
Tally Gateway > Vouchers > press F8 (Sales).
Choose the name of the Party A/c and the Sales ledger.
Choose a stock item and fill in the Quantity and Rate fields.
Enter the discount rate or the discount amount for the stock item in Discount.
Select the discount ledger from the drop-down menu.
Select F11: Features from the drop-down menu. Invoices with separate Actual and Billed Quantity columns — Yes.
If both the supplier and the receiver of the goods or services are aware of the discount before supply, the GST liability of the supplier will be lowered, since GST will not be applied on the discount. In terms of GST, there will be no distinction between trade and cash discounts.