To create Discount Ledger
Go to Gateway of Tally > Accounts Info. > Ledgers > Create
Enter the Name of the ledger.
Select Indirect Expenses as the group name in the Under field.
Set the option Inventory Values are affected to No.
Set Used In VAT Returns to No.
Set the option Use for Assessable Value Calculation to Yes. On enabling this option, the additional fields - Apportion for and Method of Apportion will be displayed. The value entered for this ledger while recording entries will be apportioned to the assessable value as per the method selected for apportionment.
In the Apportion for field select VAT and set the Method of Apportion to Based on Value
Press Y or Enter to accept and save the ledger.