You can create sales voucher with tax on MRP. Enable the option Allow MRP/Marginal for stock items? in F12:Configure while creating the stock item.
To record sales transaction with tax on MRP
1. Go to Gateway of Tally > Accounting Vouchers > F8: Sales .
2. Select the customer name in the Party’s A/c Name field.
3. Select the required Sales Ledger .
4. Select the stock item for which Calculate VAT on MRP is enabled and enter the Quantity , and Rate .
5. Select the common VAT ledger. The rate will be calculated automatically based on MRP defined for the item.
The sales invoice appears as shown below:
6. Enter Narration , if required.
7. Press Enter to save.