https://help.tallysolutions.com/docs/te9rel60/Tax_India/Service_tax/Modifying_Tax_Details_in_Transactions.htm

Modifying Tax Details in Transactions (Service Tax)

You can override service tax details defined in company level, ledgers, or groups by altering the details while recording a transaction.

To modify tax details in transactions

1.    Click F12: Configure in the voucher.

2.    Set the option Allow modification of tax details for service tax? to Yes.

3.    Press Ctrl+A to save changes and return to voucher.

4.    Select the required sales ledger. The Sales Tax Allocation screen appears.

5.    Click F12: Configure. The Service Tax Details Configuration screen appears.  

o     Set the option Allow alteration of tax rate during entry? to Yes.

The Service Tax Allocation screen appears as shown below:

o     Select the Category.

o     Enter rate of Service Tax.

o     Enter rate of Swachh Bharat cess.

o     Enter the rate of Krishi Kalyan cess.

6.    Press Ctrl + A to save.

Note: You can also view all the service tax details such as applicable from, category and others.