The GST system provides STAK (Single Time Authentication Key) through the GST Secure OTP mobile app. This feature is mainly available for composition taxpayers, enabling them to file Form GST CMP-08 by using the “File with STAK” option. STAK (Single time authentication key) is a security feature for composition taxpayers under GST. Learn how to register and activate STAK using the GST SECURE OTP app and the GST Portal. Oct 31, 2025 · See the latest Stak Inc Class A shares stock price (STAK:XNAS), related news, valuation, dividends and more to help you make your investing decisions. stak (Stak) meaning in English (इंग्लिश मे मीनिंग) is STAKE (stak ka matlab english me STAKE hai). Get meaning and translation of Stak in English language with grammar, synonyms and antonyms by ShabdKhoj.
