Exemption from Withholding on Compensation for Independent and Certain Dependent Personal Services of a Nonresident Alien :           A US nonresident alien individual who is receiving compensation for independent and certain dependent personal services performed in United States is liable for withholding tax at 30%.However if there is a Tax treaty between the US and your country of residence then you may be exempt from US withholding requirement. In that case you need to file Form 8233 with your withholding agent           Independent Personal Services :           As per US-India Tax treaty income derived by a person who is resident of India form performing of any professional services or other independent activities of a similar character in US for less than 90 days and if such person dose not have any permanent base in US do such activities; then he may be eligible to exempt that income from US tax and do away with withholding requirements. However such income may be taxable in India.           Dependent Personal Services (wages, salaries income):           Again, as per US-India Tax treaty, if you are a US non-resident employed in US for less than 182 days and if your employer dose not have any permanent establishment in US, then you may be eligible to exempt that income from US tax and do away with withholding requirements. However such income may be taxable in India.