How do I register for GST in India? Who is required to register?

Registration runs through gst.gov.in — Services → Registration → New Registration. Part A generates a Temporary Reference Number (TRN). Select taxpayer type (Taxpayer, Tax Deductor, Tax Collector, Input Service Distributor), state and district of registration, legal name (as per PAN), PAN, email and mobile number, and enter the captcha. OTP verification on email and mobile issues the TRN, valid for 15 days.

Part B completes the application using the TRN. Business details include trade name, constitution (Pvt Ltd, LLP, Firm, Proprietor), district, sector or circle and registration type. Promoters, partners or directors: names, photos, ID, DIN for directors, address and signatures. Authorised signatory is the person authorised to file returns. Principal place of business: address with proof (utility bill, rent agreement, ownership document, NOC if rented). Additional places of business (branches, godowns). Goods and services with HSN/SAC codes. Bank details (account number, IFSC, branch). State-specific information. Verification via DSC (mandatory for companies and LLPs), EVC (for individuals and firms), or e-Sign via Aadhaar.

Document upload: PAN of business plus authorised signatory; Aadhaar of authorised signatory; passport-size photographs; business constitution document (partnership deed, AOA/MOA, certificate of incorporation); address proof (electricity bill not older than 2 months, rent agreement, ownership document); bank account proof (cancelled cheque, bank statement); authorisation letter for signatory if not promoter.

Submission generates an Application Reference Number (ARN). GST officer verifies online typically; physical verification is possible (especially for new businesses and high-risk applications) with a site visit to verify business existence and cross-verified documents. Approval within 7 working days (3 days if fully Aadhaar-authenticated); if a query is raised respond within 7 days; the GSTIN is issued on approval with the certificate downloadable from the portal.

Display the GSTIN — mandatory at the principal place of business and additional places, on invoices, letterheads and business correspondence. Cost: government fee NIL; CA or consultant fee ₹2,000-₹15,000; DSC if needed ₹500-₹2,000 (Class 2 or 3). Timeline: application 1-2 hours; approval 3-15 days; total typically within 2 weeks. Aadhaar authentication yields faster processing (3 days vs 7) and typically skips physical verification. For foreign businesses: non-resident taxable person registration with tax deposit in advance, 90-day initial validity, and a specific authorised representative in India. Voluntary registration is possible below the threshold — useful for ITC claim, for B2B suppliers (buyers prefer GST-registered), for e-commerce platforms, and for credibility.

The Composition Scheme simplifies compliance for small businesses. Eligibility: annual turnover up to ₹1.5 crore (₹75 lakh for special category states); for services up to ₹50 lakh; not engaged in inter-state outward supply; not e-commerce supplier; not non-resident; no tax deduction at source. Tax rates: manufacturers or traders 1% of turnover; restaurants 5%; service providers (up to ₹50 lakh) 6% — significantly lower than regular GST (5-28%).

Restrictions: cannot claim Input Tax Credit; cannot collect tax from customers (must pay from own pocket); cannot make inter-state outward supplies; cannot supply non-taxable goods or services; cannot supply through e-commerce operator; cannot manufacture certain notified items (ice cream, tobacco, pan masala). Filing: CMP-08 quarterly (instead of monthly GSTR-1 and GSTR-3B); GSTR-4 annually — simpler compliance with lower CA cost. Switching to or from Composition: opt for composition by filing CMP-02; opt out via CMP-04 (usually at the beginning of financial year). Penalty for ineligibility applies if the composition taxpayer crosses turnover or other eligibility limits.

Regular GST compliance (non-composition) returns: GSTR-1 for outward supplies monthly (or quarterly under QRMP if turnover ≤₹5 crore); GSTR-3B summary return monthly; GSTR-9 annual return; GSTR-9C reconciliation statement if turnover >₹5 crore; specific returns for ISD, casual taxpayers etc. The QRMP Scheme (Quarterly Return Monthly Payment) for turnover up to ₹5 crore reduces compliance burden.

Invoice requirements include GSTIN of supplier and recipient, invoice number and date, description of goods or services, HSN/SAC code, quantity, unit and value, tax rate and amount, total invoice value and signature. E-invoicing is mandatory for B2B above ₹5 crore turnover with real-time IRN generation, reducing evasion and auto-populating returns. E-way bill is required for movement of goods over ₹50,000 value, generated via ewaybillgst.gov.in with validity based on distance and mandatory for inter-state.

Input Tax Credit (ITC): tax paid on purchases credited against output tax; conditions include registered supplier, valid invoice, return filed and goods received; GSTR-2B is auto-populated; reconciliation is needed; blocked credits under Section 17(5) exclude motor vehicles, club memberships and certain services. Reverse Charge Mechanism (RCM): the recipient pays tax instead of supplier for specific notified services with self-invoicing required. HSN and SAC codes are mandatory disclosure based on turnover. Penalties for non-compliance: late filing ₹50/day per return (₹20 for nil), maximum ₹5,000 per return, plus 18% interest on tax due. Annual cost of GST compliance for small business: ₹5,000-₹50,000 CA fees plus own time and software.

Freelancers and self-employed professionals face mandatory registration when turnover exceeds ₹20 lakh (₹10 lakh special category), or where any inter-state supply exists (regardless of turnover), or for e-commerce platform sale, or for international clients (export of services). Treatment of common professions varies. Lawyers (advocates) are generally exempt under Notification 9/2017 (Reverse Charge Mechanism — the client pays GST if a business). Doctors are generally exempt for healthcare services. Chartered Accountants attract 18% GST. Architects, engineers, consultants, software developers (18% GST; export zero-rated), designers, content creators, and private coaching all attract 18%. Tutors are exempt for regulated education services. Place of supply matters: within state means CGST + SGST; inter-state IGST; outside India means export (zero-rated).

E-commerce sellers face mandatory GST registration regardless of turnover. TCS by platform under Section 52 CGST at 1% — Amazon, Flipkart, Meesho deduct — reflects in GSTR-2A, credit available to seller. Compliance burden is higher; some platforms offer GST assistance schemes.

Exports are zero-rated supplies including exports of goods or services and supplies to SEZ. Two options: without payment of tax (Letter of Undertaking submitted, no IGST charged) or with payment of tax (IGST paid, refund claimed). LUT procedure: file RFD-11 online, annual filing, for exporters with no overdue tax — eliminates working capital lock-up. Refund of ITC accumulated due to exports via RFD-01, generally processed in 60 days. Documentation for export: Bill of Export, shipping bill, FIRC (Foreign Inward Remittance Certificate), BRC (Bank Realisation Certificate).

Software or IT services exported to foreign client with payment in convertible foreign currency = export, zero-rated with LUT or refund route; place of supply is recipient's location (Section 13 IGST). For an Indian client 18% GST is applicable. Restaurants and food services: restaurant services 5% (without ITC) or 18% (with ITC); online food delivery — the restaurant pays GST while Zomato and Swiggy collect TCS; cloud kitchens are treated same as restaurants. Transport services: passenger transport at 5% (air-conditioned non-stage carriage) or exempt (without AC); e-commerce booking attracts TCS; cab aggregators pass driver GST through platform; goods transport GTA at 5% (with limited ITC) or 12% (with full ITC). Real estate: under-construction affordable housing (≤₹45L) 1% (without ITC); other 5% (without ITC); commercial 12% (with ITC); ready-to-move NO GST. Healthcare is exempt: hospital, doctor consultation, diagnostic services (with conditions); medical insurance 18% GST. Education: school education generally exempt; higher education exempt for recognised institutions; coaching or private tutoring 18% if not exempt category; online courses generally 18%. NGO or charitable trusts: specific charitable activities often exempt (Notification 12/2017 exemption list); commercial activities by NGO attract GST; 12A registration is income tax exemption separate from GST.

Regular taxpayer returns: GSTR-1 details of outward supplies monthly (or quarterly QRMP); GSTR-3B summary of liability and ITC monthly; GSTR-9 annual return; GSTR-9C reconciliation if turnover >₹5 crore. Composition taxpayer returns: CMP-08 quarterly payment; GSTR-4 annual return. Specific returns include GSTR-5 (non-resident taxpayer), GSTR-5A (OIDAR), GSTR-6 (Input Service Distributor), GSTR-7 (TDS deductor), GSTR-8 (e-commerce TCS), GSTR-10 (final return on cancellation) and GSTR-11 (UN bodies, embassies).

Filing dates: GSTR-1 by 11th of next month (monthly) or 13th of month after quarter (QRMP); GSTR-3B by 20th of next month (monthly) or 22nd-24th (QRMP, state-wise); CMP-08 by 18th of month after quarter; GSTR-9 and GSTR-9C by 31 December of next financial year.

Process of filing: login to gst.gov.in → Services → Returns → File Returns; select financial year and period. For GSTR-1 add invoice details (B2B, B2C, exports, debit/credit notes). For GSTR-3B summary of outward, inward, ITC and tax payable. Pay tax via challan (PMT-06). Submit and file with DSC or EVC. Tax payment routes: GST portal, internet banking, NEFT, RTGS, over-the-counter at banks, credit ledger (ITC) plus cash ledger (cash payments).

Late filing penalty: ₹50 per day (₹25 CGST + ₹25 SGST) per return; ₹20 per day for nil returns; maximum ₹5,000 per return; plus 18% interest on tax due. Reconciliation: match GSTR-1 with GSTR-3B, match GSTR-2A/2B (auto-populated from suppliers) with own books, reconcile discrepancies, annual reconciliation in GSTR-9.

Notices and assessments: GSTR-3A (notice for non-filing); ASMT-10 (discrepancy intimation); DRC-01 (show cause notice); DRC-07 (order). Time-bound responses required. Audit: departmental audit under Section 65 CGST; special audit under Section 66; risk-based selection; generally 5 years from assessment. Investigation: DGGI (Directorate General of GST Intelligence) for tax evasion and fraud; anti-evasion teams in each state. Appeals: aggrieved order → First Appellate Authority within 3 months; GST Appellate Tribunal within 3 months from FAA order; High Court on substantial questions of law; Supreme Court SLP. Pre-deposit required at each stage (10% then 20%). Refunds via RFD-01 typically 60 days for accumulated ITC (exports), inverted duty structure, or excess balance in cash ledger. Cancellation of registration: voluntary (Reg-16) or compulsory (by department for non-compliance); GSTR-10 final return mandatory after cancellation. Compliance calendar: use the GST portal calendar plus CA reminders plus accounting software alerts.

Recent GST developments (2024-2026). GST Council meetings change rates and procedures frequently. Online gaming attracts 28% GST from October 2023. Coal cess has been restructured. E-invoicing thresholds progressively lowered to ₹5 crore. QRMP scheme expanded. Aadhaar authentication is mandatory for new registrations. GSTN (GST Network) enhancements now use AI/ML for fraud detection. Two-factor authentication for portal login. Sequential return filing: GSTR-1 before GSTR-3B. Restriction on ITC: only if invoice is in GSTR-2B.

Common issues: mismatches in returns (GSTR-1 vs GSTR-3B, GSTR-2B vs ITC claimed, books vs returns) require reconciliation effort. Working capital lock-up particularly for exporters, refund delays, ITC accumulation. Compliance burden for small businesses: multiple returns, frequent law changes, technology requirements, CA dependency. HSN code complexity: wrong classification leads to wrong rate, dispute potential, Advance Ruling option available. Input Tax Credit restrictions: time limits under Section 16(4) by November of next financial year; supplier must file return; mismatches block credit; blocked credits under Section 17(5). E-invoice or e-way bill issues include technology failures, generation glitches, system downtime and workaround procedures.

Compliance reduction strategies: use accounting software (Tally, Zoho, Quickbooks, BUSY, ProfitBooks — GST-compliant, auto-generate returns, reconciliation tools). Engage a CA — monthly compliance ₹2,000-₹15,000; annual ₹15,000-₹1 lakh; audit if applicable separate. GST Suvidha Providers offer outsourced GST compliance services. Internal team training for larger businesses.

For startups: pre-revenue phase — consider voluntary registration for ITC claim on initial expenses; investor-facing — GST registration adds credibility; service exports — LUT route to avoid IGST cash outflow; government schemes — Startup India / MSME registration offers some GST benefits. For NRIs and foreigners doing business in India: non-resident taxable person registration; tax deposit in advance; authorised representative needed; OIDAR (Online Information and Database Access) for foreign suppliers of digital services to Indian non-business consumers with GSTR-5A return and different framework.

For e-commerce sellers specifically: TCS reconciliation (platforms deduct 1%, credit available, reflects in cash ledger); multiple platforms mean aggregate compliance; returns and refunds affect GST liability. For consultants and freelancers: voluntary registration for B2B credibility; Section 9(3) Reverse Charge for specific services; export of services zero-rated; domestic clients 18% on most services. Resources: gst.gov.in; CBIC (cbic.gov.in); GST helpdesk 1800-103-4786; GST Practitioner (registered authorised consultants); mobile apps (GST app, CBIC GST app); authoritative books (Bharat Law House, CCH, Taxmann); webinars (ICAI, ICSI, GST training programmes). Engage a qualified CA for compliance — ROI usually justifies for any business above ₹50 lakh turnover.