As many as 1.6 lakh businesses that were previously not registered for either VAT, service tax or excise duty have enrolled for Goods and Services Tax (GST) in the past four days. "Since June 25, 1.60 lakh applications for fresh registrations have come in. Of this, 53,000 applications have been completed with details of the business. The rest are in the process," GSTN Chairman Navin Kumar said. As the GST Network portal reopened for the third time for registration of both new assessees and existing excise, service tax and VAT payers on June 25, businesses rushed to get themselves registered ahead of the July 1 rollout of GST. New businesses have 30 days to register on the GSTN portal beginning June 25. In the first two rounds of the registration window, 66 lakh existing indirect taxpayers out of a total of 80.91 lakh had registered with GST Network, the IT backbone for GST.