GST registration in India for businesses that engage in interstate commerce or above a certain sales threshold. It allows companies to collect and send the government the Goods and Services Tax (GST). A unique GSTIN is provided by registration, facilitating input tax credits, legal compliance, and more efficient operations. Regular taxpayers, candidates for composition schemes, and e-commerce operators are among the groups it covers. Under India's unified tax system, GST registration is crucial for maintaining transparency, increasing credibility, and guaranteeing smooth commercial transactions.