In India, businesses that supply goods and services are required to register for GST (Goods and Services Tax) if their turnover exceeds the threshold limit. The threshold limit for GST registration depends on the type of business and the state in which it operates. Here are the GST registration requirements for businesses in India: Turnover Threshold: Businesses whose aggregate turnover (including sales and taxable supplies) exceeds Rs. 40 lakhs in a financial year (Rs. 20 lakhs for businesses operating in special category states) are required to register for GST. Mandatory Registration: Some businesses are required to register for GST, irrespective of their turnover. These include businesses engaged in interstate supplies, e-commerce operators, and businesses that supply goods and services to other countries. Voluntary Registration: Businesses whose turnover is below the threshold limit can also register for GST voluntarily to avail the benefits of input tax credit or to supply goods and services to other GST-registered businesses. Separate Registration: If a business operates in multiple states, it is required to obtain separate GST registration for each state. Tax Deductors: Businesses that are required to deduct tax at source under GST are required to obtain GST registration, irrespective of their turnover. To register for GST, businesses need to provide their basic information, such as PAN, address proof, and bank account details, and upload the necessary documents on the GST portal. Once the application is approved, the business is assigned a unique GSTIN (Goods and Services Tax Identification Number), which is used for all GST-related transactions.