In TallyPrime and later versions, recording inclusive-of-tax transaction is simplified. Earlier you had to create a voucher class with inclusive-of-tax percentages to record inclusive-of-tax transactions.
Now, this can be done by enabling the option Provide Rate Inclusive of Tax for Stock Items under F12 (Configure) in sales invoice.
Gateway of Tally > Vouchers > press F8 (Sales).
Alternatively, press Alt+G (Go To) > Create Voucher > press F8 (Sales).
Press F12 (Configure) and enable the option Provide Rate Inclusive of Tax for Stock Item.
The column Rate (Incl. of Tax) appears in the invoice.
Rate (incl. of Tax): Enter the rate of the item including tax in this column. The actual rate will appear in the Rate column. The tax amount will appear automatically on selecting the tax ledgers.