GST registration in India is required for enterprises with a turnover greater than the stipulated level or those conduct interstate sales. Online GST registration is straightforward and can be accomplished using the GST portal. To apply, include your PAN, address, and business information. After verification, a GST number (GSTIN) is supplied. The GST registration process is free of charge by the government, although expert assistance may incur service fees. Obtaining a GST number assures tax compliance and facilitates business progress.