The GSTN is a non-profit, non-government organization. It will manage the GST portal's entire IT system, which is the mother database for everything GST. The Government of India will use this portal to track every financial transaction.
GST Calculator is a device that helps in calculating the GST amount on different goods or services accurately. The tool's sole purpose is to show the total value of goods or services, including the amount of GST.
Every company/individual who supplies goods and services has to register under GST under the current GST regime. So, if your annual business turnover exceeding Rs.20 lakh (in all Indian states, other than north-eastern countries), you need to register with GSTN