In addition to confirming your contact information, you'll need to submit your tax information so that you may become eligible to receive a payment from Google. We're required to collect tax-related information from all AdSense publishers, including publishers who are based outside of the U.S. , and we're unable to send payment to you until your information has been submitted. So don't skip this I am from India and my server not in U.S. so i've to submit tax detail or not?
NON-US publishers don't need to submit tax infos..even if your website is hosted in a us based company ... Unless you have got a company or you employ people in us., you dont need to do this..