GST registration is mandatory for individual businesses with annual turnover above Rs. 40 Lakhs. All existing registered companies under central excise, service tax or VAT need to register under GST using a new GST registration process. The online procedure makes it easier for business owners to fill a form on the GST portal and submit the set of required documents to register for GST online. Individual businesses must complete the GST registration process. A GST registered company can enjoy benefits by voluntary registration under GST. The complete registration process can be completed within 3-7 working days. GST Registration is a process by which a taxpayer gets himself registered under GST. Once a business is successfully registered, a unique registration number is assigned to them known as the Goods and Services Tax Identification Number (GSTIN). This is a 15-digit number assigned by the central government after the taxpayers obtain registration.