Access the list of taxpayers registered under Goods and Services Tax (GST) in India. Search by GSTIN/UIN Search By PAN Search Composition Taxpayer Top The Search Taxpayer functionality allows you to view the profile of any other registered taxpayer at the GST Portal on entering the GSTIN/UIN. Once you enter the GSTIN/UIN and click the submit button, following details will be displayed: Note: The Search Taxpayer functionality allows you to view the profile of any other registered taxpayer at the GST Portal on entering the GSTIN/UIN. You can search the details of a taxpayer without login and also after logging into the GST Portal.