As per circular 01/2014 I did some configuration changes Please check if this is helpful
Purpose:Based on the above circular, certain modifications have been effected to meet the conditions. The document also projects the accounting treatment in SAP for payment made under section 194 where Service tax is explicitly mentioned or not mentioned in the invoice. Requirement is that when one needs to implement this through Net amount, All the Tax including Vat, CST etc. also exclude from Withholding Tax Base amount. it is ok for 194J but when it comes to 194C, we need to go to below approach.
1. Define Withholding Tax Type for Invoice Posting—change withholding tax base amount to “Modif. net amount” for required TDS code.
If you set this indicator, the modified net amount is used as the base amount for calculating the withholding tax.
Modified means that the additional amount is added to the net amount. This additional amount consists of the tax amount and is determined by one or more transaction keys that you define in your Customizing settings for the withholding tax base amount.
so you need to add those tax keys which you are assigned in input tax code in FTXP
you can get those from table T030K.
from all tax keys please remove service tax related tax keys and map balance as below for required TDS tax code (If you are using same tax key for service tax & other taxes; you need to create Z tax key for service tax than map that to condition type, “In my case it was NVV & condition type JSV2”)
2. Withholding Tax Base Amount–Define Processing Key for Modified Net Amount– maintain withholding tax type & Internal processing key for which you need to deduct withholding tax
now you are calculating TDS on (net amount + tax keys mapped with TDS code) in above transaction.