Can it be done online?

Yes 100% online via gst.gov.in. Aadhaar biometric at designated centre. CA handles complete filing.

No government fee. CA professional fee from Rs 2,999. DSC Rs 800-1,500 for companies.

3-7 working days standard. Up to 30 days if physical verification triggered.

15-digit number starting with 19 for West Bengal followed by PAN entity code and check digit.

Up to Rs 1.5 Cr goods or Rs 50L services. Lower rates but no ITC and no interstate. Small retailers and local restaurants.

Rs 10,000 or tax evaded whichever higher under Section 122. Late returns Rs 50 per day. 6 months non-filing leads to cancellation.

Trusted by 10,000+ Businesses

GST Registration in Kolkata: CA-Assisted GSTIN for Every Business

Reviewed by CA and CS Team, Patron Accounting LLP ICAI & ICSI Registered| 15+ Years Experience| Last Updated: 08 April 2026 Verify Credentials →

Documents:: PAN, Aadhaar, business proof, address proof, bank details

Fees:: No govt fee | CA from Rs 2,999 | Timeline: 3-7 working days

Eligibility:: Turnover > Rs 40L goods / Rs 20L services | Mandatory for e-commerce/interstate

Authority:: GST portal (gst.gov.in) | CGST Kolkata | WB Commercial Taxes | State code: 19

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Kolkata businesses trust Patron for GST registration, return filing, and ITC optimisation.

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Overview What Is GST Who Needs It Services Process Documents Challenges Fees Timeline Why Patron Regular vs Composition FAQs

GST Registration in Kolkata: Overview

📌 TL;DR - GST Registration Services at a Glance

GST registration in Kolkata obtains a 15-digit GSTIN via gst.gov.in under CGST Act 2017 and WBGST Act 2017. Mandatory when turnover exceeds Rs 40L (goods) or Rs 20L (services). E-commerce, interstate, and reverse charge must register regardless. No govt fee. Aadhaar biometric verification mandatory. State code 19 (West Bengal).

Kolkata is eastern India's commercial capital - Burrabazar wholesale trading, Salt Lake IT, New Town startups, Dalhousie BFSI, Park Street hospitality, Taratala manufacturing, and Netaji Subhas Dock exports. Every business reaching the threshold needs GSTIN. Learn more about GST Registration across India.

GST filed on gst.gov.in using REG-01. CGST Commissionerates (North/South/Central) handle central tax. WB Commercial Taxes handles SGST. CA ensures Aadhaar biometric, HSN/SAC mapping, and return setup. Same CA handles Pvt Ltd, LLP, and accounting.

Content is reviewed quarterly for accuracy.

What Is GST Registration?

GST registration is the process of obtaining a 15-digit GSTIN from the GST portal under the CGST Act, 2017 and WBGST Act, 2017, enabling a business to collect tax, claim input tax credit, file returns, and conduct interstate trade.

Regular registration or Composition Scheme (up to Rs 1.5 Cr goods / Rs 50L services with lower rates but no ITC). Filed via gst.gov.in with Aadhaar biometric verification. No government fee.

For Kolkata: Burrabazar wholesale traders, Salt Lake IT companies, Park Street restaurants, Taratala manufacturers, Kolkata Port exporters, and e-commerce sellers all need GSTIN with correct HSN/SAC codes mapped to their product/service categories.

Key Terms for GST Registration:

GSTIN: 15-digit GST Identification Number starting with 19 (WB)
REG-01: GST registration application form on gst.gov.in
HSN/SAC: Product codes (HSN) and service codes (SAC) with GST rates
GSTR-1: Outward supply return (monthly/quarterly)
GSTR-3B: Summary return with tax payment (monthly/quarterly)
ITC: Input Tax Credit on purchases - claimed via GSTR-2B reconciliation
Composition: Lower rates (1%/5%/6%) but no ITC, no interstate
WB PT: Professional Tax (Rs 110-200/month) via wbcomtax.gov.in

CGST + WBGST 2017 GST Registration

Who Needs GST Registration in Kolkata?

Wholesale Traders (Burrabazar): Grains, spices, textiles, FMCG. Cross Rs 40L quickly. HSN mapping critical. E-way bills for goods movement.

IT/SaaS (Salt Lake / New Town): Register once services > Rs 20L. Many register voluntarily for ITC on rent, cloud, equipment. SAC 998314. Interstate.

Restaurants/Hotels (Park Street / Esplanade): Register if > Rs 20L. Regular (18% with ITC) or Composition (5% no ITC). KMC Trade License parallel.

Manufacturers (Taratala / Howrah): > Rs 40L goods. HSN per product. ITC on raw materials. E-way bills for dispatch.

Exporters (Kolkata Port / Netaji Subhas Dock): Mandatory interstate registration. Zero-rated exports. LUT filing. IGST refund or bond.

E-Commerce Sellers: Mandatory regardless of turnover. Amazon, Flipkart, Meesho. TCS compliance. Registration before listing.

GST Registration Services Included

Service	What We Do
GST Type Assessment	Regular vs Composition based on turnover, supply type, interstate/intrastate operations
REG-01 Filing	Complete application on gst.gov.in. Business, promoter, premises, HSN/SAC, bank details. DSC/EVC signing
Aadhaar Biometric Coordination	Post-2025 mandatory. Appointment at designated Kolkata centre. CA coordinates scheduling
HSN/SAC Code Mapping	Every product/service mapped to correct code and GST rate. Critical for Burrabazar multi-commodity traders
GSTIN Certificate Download	REG-06 with 15-digit GSTIN (19XXXXX). Displayed at Kolkata premises as required
WB Professional Tax Advisory	PTRC/PTEC registration via wbcomtax.gov.in GRIPS. Rs 110-200/month slab
Return Filing Setup	GSTR-1, GSTR-3B, GSTR-9 calendar. E-way bill. IGST refund for exporters. QRMP option
ITC Optimisation	Maximum eligible ITC on rent, utilities, equipment. GSTR-2B reconciliation configured

Our Process

GST Registration Process in Kolkata

From type assessment to REG-01 filing, biometric verification, and GSTIN - here's how Patron registers your Kolkata business.

Step 1

Determine GST Registration Type

CA assesses turnover, supply type, and interstate operations. Regular vs Composition (1% mfg, 5% restaurants, 6% services). Composition: no ITC, no interstate. CA advises optimal scheme for Kolkata business.

Type determined Scheme selected

Type Selected01

Step 2

Collect Documents and Prepare Application

PAN, Aadhaar, photographs, business proof (COI/partnership deed), Kolkata premises proof (KMC tax/rent+NOC+electricity), bank details. HSN/SAC codes mapped to products/services with correct rates.

Documents ready HSN/SAC mapped

Application Ready02

Step 3

File GST REG-01 on Portal

CA files on gst.gov.in. TRN generated. Part B completed: business details, promoter details, Kolkata premises, goods/services with codes, bank account. Documents uploaded. DSC/EVC signed.

REG-01 filed TRN generated

Filed03

Step 4

Aadhaar Biometric Verification

Mandatory post-2025. Applicant visits designated Kolkata centre. CA coordinates appointment scheduling. Timely completion critical for ARN generation and approval.

Biometric done ARN active

Verified04

Step 5

GSTIN Issuance (REG-06)

GST officer processes in 3-7 days. Physical verification if triggered (rented premises). CA ensures originals available. 15-digit GSTIN (19XXXXX) issued. Certificate downloaded and displayed.

GSTIN issued Certificate ready

Registered05

Step 6

Post-Registration: Bank, Returns, ITC

Bank details updated within 30 days (mandatory). GSTR-1/3B calendar set. E-way bill configured. WB PT registered. ITC reconciliation. For exporters: LUT filed before first shipment.

Returns setup ITC optimised

Fully Operational06

Documents Required

PAN: Of business entity (company/LLP/partnership/individual)
Aadhaar: Of all promoters/partners/directors (biometric verification)
Photographs: Of promoters/partners/directors
Business Proof: COI, partnership deed, LLP agreement
Address Proof: KMC property tax receipt or rent agreement + NOC + electricity bill
Bank Details: Statement or cancelled cheque (update within 30 days of GSTIN)

Kolkata-Specific Tip: Rented premises in Burrabazar and Park Street may trigger physical verification by GST officer. Ensure rent agreement address exactly matches utility bill. Patron's CA verifies address consistency before filing to minimise verification triggers.

Common Challenges in Kolkata

Challenge	Impact	How Patron Accounting Solves It
Biometric Verification Delays	Limited appointment slots during peak periods	CA schedules biometric immediately after application
Physical Verification (Rented)	Address mismatch, absent proprietor during visit	CA ensures address consistency and coordinates presence
HSN/SAC Code Errors	Wrong codes = wrong GST rate = notices during scrutiny	CA maps every product/service to correct code before filing
Bank Non-Updation (30 Days)	Non-updation triggers GST suspension - no returns, no e-way	CA updates bank details immediately after GSTIN issuance
Multi-State Registration Confusion	Unnecessary registrations in other states	CA advises correct strategy - single WB GSTIN for intra-state

GST Registration Fees in Kolkata

Fee Component	Amount
Government Fee	NIL (no govt charge for GST registration)
Professional Fee (Patron CA)	Rs 2,999-5,999 (REG-01, HSN/SAC, biometric coordination)
DSC (for companies/LLPs)	Rs 800-1,500 (Class 2/3 for authorised signatory)
WB Professional Tax	Included in advisory (separate govt fee via GRIPS)
GST Return Filing (ongoing)	Rs 1,500-5,000/month (GSTR-1, GSTR-3B, GSTR-9)
Total (Registration)	Rs 2,999-7,500 one-time estimated

All fees and charges listed are indicative only and do not constitute a binding offer. Final amounts may vary depending on the volume of work and the complexity involved.

Professional service charges for drafting, filing, and representation are separate from the statutory fees. The exact fee depends on the complexity of the case, disputed amount, and number of hearings required. Contact us for a detailed quote.

Get a free GST Registration consultation - Call +91 945 945 6700 or WhatsApp us. No-obligation assessment.

Registration Timeline

Stage	Estimated Timeline
Document Collection	Day 1-3 (CA verifies all documents)
REG-01 Filing on gst.gov.in	Day 3-4 (TRN generated, Part B completed)
Aadhaar Biometric Verification	Day 4-7 (appointment at designated centre)
GST Officer Processing	Day 7-14 (3-7 days; physical verification if triggered)
GSTIN Issuance (REG-06)	Day 7-14 (certificate downloaded)
Bank Update + Returns Setup	Day 14-20 (within 30 days mandatory)

Kolkata Processing Note: GST registration is 100% online via gst.gov.in. Aadhaar biometric requires one centre visit. Physical verification may apply for rented premises. CA files query-proof applications and coordinates biometric promptly for fastest GSTIN issuance.

Key Benefits

Why Choose Patron for GST in Kolkata?

HSN/SAC Code Expertise

Every product and service mapped to correct code and GST rate. Critical for Burrabazar multi-commodity traders and Salt Lake IT companies.

Biometric + Verification

Aadhaar biometric coordinated promptly. Premises verification managed - address consistency ensured. Fastest GSTIN issuance.

4-Office Authority

Offices in Pune, Mumbai, Delhi, Gurugram. Multi-state businesses get coordinated GST across all locations.

Returns + ITC from Day 1

GSTR-1/3B/9 calendar set. E-way bill. ITC optimisation. WB PT registered. Exporters: LUT filed. Zero compliance gaps.

Trusted by Kolkata Businesses

10,000+ Businesses Served | 4.9 Google Rating | 50,000+ Documents Filed | 15+ Years

"Patron got our GSTIN in 5 days. HSN codes for 50+ product categories mapped correctly. Monthly GSTR-1 and 3B filed on time. ITC reconciliation saves us lakhs every year."
- Wholesale Trader, Burrabazar

With offices in Pune, Mumbai, Delhi, and Gurugram, Patron serves Kolkata through a digital-first CA team.

Regular vs Composition GST for Kolkata

Feature	Regular GST	Composition Scheme
Turnover Limit	No upper limit	Rs 1.5 Cr goods / Rs 50L services
Tax Rate	5%/12%/18%/28% per HSN/SAC	1% mfg, 5% restaurants, 6% services
Input Tax Credit	Can claim ITC	Cannot claim ITC
Interstate Supply	Allowed	Not allowed - intrastate only
Returns	GSTR-1 + GSTR-3B (monthly/quarterly)	CMP-08 quarterly + GSTR-4 annual
Tax Invoice	Full tax invoice with GST breakup	Bill of supply only
Ideal For Kolkata	Burrabazar exporters, Salt Lake IT, interstate manufacturers	Small retailers, local restaurants, neighbourhood services

Related Services

GST Registration in India - National services
Pvt Ltd Registration in Kolkata - Company incorporation
LLP Registration in Kolkata - Partnership
Trademark in Kolkata - Brand protection
Zoho Books Accounting in Kolkata - Cloud bookkeeping
ITR in Kolkata - Business income tax

Legal and Compliance Framework

CGST Act, 2017 | WBGST Act, 2017 | IGST Act, 2017
Section 22 - registration | Section 24 - compulsory | Section 25 - procedure
Section 10 - Composition | Section 29 - cancellation | Section 122 - penalties
GST portal: gst.gov.in | WB Commercial Taxes: wbcomtax.gov.in
CGST Commissionerates: Kolkata North, South, Central

Penalties: No registration when mandatory: Rs 10,000 or tax evaded | Late returns: Rs 50/day | 6 months non-filing: cancellation

FAQs - GST Registration in Kolkata

Common questions about GSTIN, turnover threshold, biometric, HSN/SAC, Composition, and returns for Kolkata businesses.

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Is GST mandatory for all Kolkata businesses?

Mandatory when turnover > Rs 40L goods or Rs 20L services. E-commerce sellers, interstate suppliers, reverse charge, casual taxable persons must register regardless. Voluntary registration available for ITC.

Can GST be registered online?

Yes, 100% online via gst.gov.in (REG-01). Aadhaar biometric at designated centre. CA handles complete filing including biometric coordination.

What is the GST registration fee?

No government fee. CA professional fee from Rs 2,999 for application, HSN/SAC mapping, and compliance setup. DSC Rs 800-1,500 for companies/LLPs.

How long does it take?

3-7 working days standard after biometric. Up to 30 days if physical verification triggered for rented premises.

What is the GSTIN format for Kolkata?

15-digit number starting with 19 (West Bengal) followed by PAN digits, entity code, and check digit. Must be on all invoices and e-way bills.

Can I do interstate business without GST?

No. Interstate supply requires mandatory registration regardless of turnover under Section 24. Applies to Burrabazar distributors and Salt Lake IT companies.

Should I choose Composition scheme?

Composition: lower rates (1%/5%/6%), simpler returns, but no ITC and no interstate. Good for small retailers and local restaurants. CA advises based on your model.

What happens without GST when required?

Penalty Rs 10,000 or tax evaded (whichever higher) under Section 122. Late returns Rs 50/day. 6 months non-filing leads to cancellation by officer.

Quick Answers

GST registration kya hai? GSTIN - 15-digit number. Tax invoice, returns, interstate trade ke liye zaroori. Kolkata state code 19.

Kolkata mein GST kaise banwayein? Patron se call karein +91 945 945 6700. CA gst.gov.in pe REG-01 file karta hai. 3-7 din mein GSTIN.

Turnover limit? Goods Rs 40L. Services Rs 20L. E-commerce aur interstate mandatory.

Don't Wait - Get Your GSTIN Today

Operating without GST when mandatory = Rs 10,000+ penalty under Section 122. Bank details must be updated within 30 days of registration. GSTR-3B non-filing for 6 months = cancellation. E-commerce sellers must register before listing. Start with CA-managed registration today.

Get Started with GST Registration in Kolkata

GST registration in Kolkata provides GSTIN for tax collection, ITC, returns, and interstate trade under CGST/WBGST Act 2017. Filed online at gst.gov.in with Aadhaar biometric verification.

Kolkata businesses across Salt Lake, Burrabazar, Dalhousie, Park Street, Taratala, Howrah, and Netaji Subhas Dock benefit from CA-managed HSN/SAC mapping, biometric coordination, and integrated WB PT, return filing, and ITC optimisation.

Patron Accounting LLP has served 10,000+ businesses, filed 50,000+ documents, and maintained a 4.9 Google rating across 15+ years of chartered accountancy practice.

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Content Created: 08 April 2026 | Last Updated: 08 April 2026 | Next Review: 08 October 2026 | Reviewed By: CA & CS Team, Patron Accounting LLP

This content covers GST registration in Kolkata including CGST/WBGST Act 2017, gst.gov.in, HSN/SAC, Aadhaar biometric, Regular vs Composition, WB PT, and return filing. Reviewed semi-annually. Freshness Tier 2.