If you sell goods or services in India, GST registration isn't something you can ignore forever. But the thresholds changed for FY 2026, and plenty of business owners are still working off outdated numbers. Here's what actually applies right now.
- Goods: Rs 40 lakh turnover threshold; services: Rs 20 lakh (lower in special-category states).
- Inter-state and e-commerce sellers must register from the first rupee.
- Aggregate turnover includes exempt, export and inter-state supplies under one PAN.
- Voluntary registration can pay off for B2B sellers and input-heavy businesses.
The Goods and Services Tax was designed to simplify indirect taxation, but the registration rules have layers. Whether you're a freelancer working from your bedroom or running a D2C brand shipping across states, the answer to “do I need a GSTIN?” depends on a few very specific things.
The current turnover thresholds
For FY 2026, the mandatory registration limits are:
- Goods sellers: ₹40 lakh aggregate turnover (₹20 lakh for special category states like Manipur, Mizoram, Nagaland and Tripura).
- Service providers: ₹20 lakh aggregate turnover (₹10 lakh for special category states).
- Inter-state suppliers: no threshold, registration is mandatory from the first rupee, regardless of turnover.
That last point catches a lot of people. If you're a consultant in Mumbai billing a client in Bengaluru, you need GST registration even if your annual revenue is ₹3 lakh. The inter-state rule has no floor.
Who must register regardless of turnover?
Even if you're well below the threshold, certain categories require mandatory registration:
- E-commerce sellers: if you sell through Amazon, Flipkart, Meesho or any e-commerce operator, you need a GSTIN, no turnover exemption applies.
- Casual taxable persons: running a pop-up stall or temporary business in a state where you don't have a fixed place? You need registration.
- Non-resident taxable persons: foreign businesses making taxable supplies in India.
- Reverse charge payers: if you're liable to pay tax under the reverse charge mechanism.
- Input service distributors and TDS/TCS deductors under GST.
When voluntary registration makes sense
You might be under the threshold and not in any mandatory category, but registration could still be the smarter move. Here's when:
- Your buyers are businesses: B2B clients want GST invoices so they can claim input tax credit. Without your GSTIN, they lose that credit, and they might take their business elsewhere.
- You have significant input costs: if you're buying raw materials, software subscriptions or professional services with GST baked in, registration lets you claim that tax back as input tax credit.
- You plan to scale: registering early establishes a compliance track record. It also avoids the scramble of mid-year registration when you cross the threshold unexpectedly.
“Voluntary registration isn't about paying more tax. It's about recovering the tax you're already paying on your inputs, and looking professional to clients who care about compliance.”
The registration process in 2026
GST registration is entirely online through the GST portal. Here's the timeline you can expect:
- Application: file GST REG-01 with your PAN, Aadhaar, business address proof and bank details.
- Aadhaar authentication: if you opt in, the process is faster, typically 3 working days for approval.
- Without Aadhaar: expect a physical verification of your business premises, which can take up to 30 days.
- GSTIN issued: once approved, you receive your 15-digit GST identification number and can start filing.
The most common reason applications get rejected? Mismatched addresses between the PAN card and the supporting documents. Double-check before you submit.
Registration thresholds at a glance
| Category | Normal states | Special-category states |
|---|---|---|
| Goods | Rs 40 lakh | Rs 20 lakh |
| Services | Rs 20 lakh | Rs 10 lakh |
| Inter-state / e-commerce | No threshold — register from the first rupee | |
Frequently asked questions
I'm under the threshold — should I register anyway?
Often yes, if your customers are businesses that want input credit, or you have significant input GST to reclaim. Voluntary registration is a common strategic choice.
What documents do I need?
PAN, Aadhaar, address proof and bank details, with variations by entity type. See our documents and process guide.
How long does registration take?
Usually 3–7 working days with Aadhaar authentication; up to 30 days if physical verification is triggered.
Whether GST registration is mandatory or voluntary for you, getting it right from day one saves you from penalties, interest and the stress of backdated compliance. If you'd rather not navigate the portal yourself, FilingSetu handles GST registration end to end, from application to your first return.
