Type search words and press enter
"Use Edit Log for transactions/masters, and digital signature for invoices/reports with Release 2.1. Download NOW!"
https://help.tallysolutions.com/docs/te9rel66/Advanced_Features/Advanced_Inventory_Features/Enabling_Rate%28Inclusive_of_Tax%29.htm

Enable Rate (Inclusive of Tax)

When defining the price of the item you can include the tax rate.

1. Go to Gateway of Tally > Inventory Info. > Stock Items > Create/Alter > F12: Configure .

2. Set Allow inclusive of tax for stock items to Yes .

3. Press Ctrl+A to go to the Stock Item Alteration screen.

4. Set Is inclusive of duties and taxes? to Yes .

5. Enter the Rate of Duty , as required.

6. Press Ctrl+A to save the ledger.