Tax Consultant
1312 Points
Posted on 23 June 2026
GST registration rules differ based on what you supply and where.
Mandatory threshold:
- Rs 40 lakh aggregate annual turnover for goods suppliers in most states
- Rs 20 lakh for service providers in most states
- Rs 10 lakh for businesses in North-Eastern and hill states
Cross the threshold in any financial year and registration is mandatory within 30 days.
Compulsory registration regardless of turnover (common ones):
- Selling on any e-commerce platform like Amazon, Flipkart, or Meesho (mandatory from day 1, no threshold)
- Making inter-state supply of goods
- Receiving taxable services from outside India (reverse charge)
- Businesses required to deduct TDS under GST (Government entities, PSUs)
Voluntary registration: Businesses below the threshold can register voluntarily to claim Input Tax Credit on their purchases and issue proper GST invoices to B2B clients who need ITC.
After filing the online application on the GST portal, you get an ARN (Application Reference Number) immediately. The GSTIN is assigned within 7 working days if all documents are in order.
For tracking your application status after submission, this [GST registration ARN status check guide](https://taxgarden.in/blog/gst-registration-arn-status-check-india-2026) explains each ARN stage and what to do if it gets stuck.