Eastern India's largest commercial city and gateway to Northeast India — Kolkata has a dominant wholesale trading ecosystem and a growing IT corridor in Salt Lake. Business owners in Kolkata, West Bengal — traders in Park Street, manufacturers in Salt Lake (Bidhannagar), and professionals across the city — face income tax obligations significantly more complex than salaried employees. Choosing between regular accounting and presumptive taxation, determining audit requirements, matching GST and ITR figures, and paying advance tax correctly are all critical decisions. TaxAMC's CA team handles complete business ITR compliance for Kolkata businesses of all sizes.
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1. Business ITR Overview for Kolkata
Kolkata's business landscape — Jute and textiles, Engineering and steel fabrication, Wholesale trading (Burrabazar) — means businesses here have diverse tax profiles. Key decisions before filing ITR for FY 2025-26:
- Do you qualify for presumptive taxation under Section 44AD or 44ADA?
- Is your turnover above the tax audit threshold (₹1 crore for businesses)?
- Are you maintaining proper books of accounts?
- Have you paid advance tax in four instalments?
- Does your ITR turnover match your GST annual return?
2. ITR-3 vs ITR-4 for Kolkata Business Owners
| Form | Who Should Use |
|---|---|
| ITR-4 (Sugam) | Businesses in Kolkata opting for presumptive taxation — turnover up to ₹2 crore (Section 44AD) or professional receipts up to ₹75 lakh (Section 44ADA) — with no capital gains or foreign assets |
| ITR-3 | Regular accounting — turnover above audit limits, businesses with capital gains, those not eligible for presumptive taxation, or those maintaining full books |
3. Presumptive Taxation Under Section 44AD for Kolkata Businesses
Small traders and manufacturers in Kolkata with turnover up to ₹2 crore can opt for Section 44AD presumptive taxation — declaring 8% of gross turnover as income (6% for fully digital receipts) without maintaining detailed books. This is ideal for small businesses in Kolkata's Jute and textiles sector that want to minimise compliance burden.
Section 44ADA for professionals: Doctors, lawyers, engineers, architects, and consultants in Kolkata with gross receipts up to ₹75 lakh can declare 50% as presumptive income under 44ADA.
Important restriction: If you opt out of presumptive in any year, you cannot use it for the next 5 years. Our CA team evaluates whether presumptive is sustainable for your Kolkata business before recommending it.
Not sure if presumptive taxation is right for your Kolkata business? Our CA team does a free assessment.
Check Presumptive Eligibility →4. When is Tax Audit Required for Kolkata Businesses?
| Situation | Audit Required? | ITR Deadline |
|---|---|---|
| Turnover above ₹1 crore | Yes (Section 44AB) | 31st October 2026 |
| Turnover above ₹10 crore (all digital) | Yes | 31st October 2026 |
| Professional receipts above ₹50 lakh | Yes | 31st October 2026 |
| Presumptive taxpayer declaring below 8% | Yes | 31st October 2026 |
| Below limits, no audit | No | 31st July 2026 |
Kolkata is the ROC jurisdiction for West Bengal. It sees strong demand for company incorporation in trading, jute, engineering, and IT — with significant partnership firm conversions. Tax audit must be conducted by a Chartered Accountant who issues Form 3CA/3CB and 3CD. TaxAMC handles complete tax audit services for Kolkata businesses.
5. Business Deductions Kolkata Business Owners Can Claim
- Rent for business premises in Kolkata
- Salaries and wages paid to employees
- Electricity, telephone, and internet bills
- Depreciation on assets — machinery, vehicles, computers — under Section 32
- Interest on business loans
- Raw material and stock purchases
- Professional fees paid to CA, lawyers, consultants
- Advertising and marketing expenses
- Vehicle expenses (proportionate business use)
Not deductible: Personal expenses, cash payments above ₹10,000 per day to a single person in some cases, penalties and fines.
6. Advance Tax Due Dates for Kolkata Business Owners — FY 2025-26
| Instalment | Due Date | Minimum % of Annual Tax |
|---|---|---|
| 1st Instalment | 15th June 2025 | 15% |
| 2nd Instalment | 15th September 2025 | 45% |
| 3rd Instalment | 15th December 2025 | 75% |
| 4th Instalment | 15th March 2026 | 100% |
Non-payment of advance tax attracts 1% per month interest under Sections 234B and 234C. Presumptive taxpayers under 44AD/44ADA can pay entire advance tax in one instalment by 15th March 2026.
7. Areas We Serve in Kolkata
TaxAMC provides business ITR filing, tax audit, and advance tax services across all localities in Kolkata, including:
- Park Street
- Salt Lake (Bidhannagar)
- New Town Rajarhat
- Burrabazar
- Howrah Industrial Area
- Sector V IT Hub
- Esplanade
- Dalhousie
Also serving businesses in nearby cities: Howrah, Durgapur, Siliguri, Bhubaneswar.
8. Frequently Asked Questions — Business ITR in Kolkata
Business ITR Filing in Kolkata — Expert CA Support
Traders, manufacturers, service providers, and professionals in Kolkata, West Bengal — our CA team handles complete income tax compliance including books preparation, presumptive assessment, audit, advance tax, and ITR filing. Serving Park Street, Salt Lake (Bidhannagar), New Town Rajarhat, Burrabazar, and all of Kolkata.
Business ITR Help on WhatsApp →Disclaimer: This article is for general informational purposes only and represents our professional views as Chartered Accountants. It does not constitute legal or tax advice. Tax laws are subject to change. Please consult our team for situation-specific guidance.