Know-How Exchange : Other

We are based in India. Our US customer has office in India and we are providing counsultancy services to them in their India office. The US office, with whom the contract for service is signed, wants us to get the foll. 2 forms filled up.

1. W-8BEN form: Certificate of Foreign Status of Beneficial Owner for United States Tax Withholding
2. Form W-9: Taxpayer Identification Number Request

The monthly invoice is for an single amount, inclusive of service tax, billed in USD.

Which document should we expect from them for the TDS claim (tax deducted at source), if we can claim the withholding tax in India? What is the standard withholding tax component in percentage?
Any other inputs - IEC code required, STPI status necessary, etc.

regards,
Cyril