GST registration in India is required for firms with an annual turnover above a certain threshold or those conducting interstate activities. This registration allows businesses to collect GST from customers and receive input tax credits for purchases. GST registration also boosts corporate legitimacy and opens up options to collaborate with larger companies and government projects. The process, which is controlled through the GST site, entails giving important business information, PAN, proof of address, and banking information, making compliance simple and transparent.