This is the 80th volume of the Tax Bulletin from The Institute of Cost Accountants of India, published in January 2021. It contains articles on various direct and indirect tax matters, including Aadhar authentication in GST, changes in CGST rules, and citizenship-based taxation in India. The bulletin also includes recent updates, press releases, judgments, and a tax compliance calendar. It is a valuable resource for tax professionals, students, and anyone interested in staying current with Indian tax regulations.