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ITR for Companies in Mumbai: ITR-6 Filing with Tax Audit, MAT, and Corporate Tax Compliance

Reviewed by CA and CS Team, Patron Accounting LLP ICAI & ICSI Registered| 15+ Years Experience| Last Updated: 24 March 2026 Verify Credentials →

Form: ITR-6 for all companies (except Section 11 charitable trusts) – DSC mandatory

Corporate Tax Rates: 22% (Section 115BAA) | 25% (Section 115BAB new manufacturing) | 30% (default)

MAT: 15% under Section 115JB (if regular tax < MAT) – credit carry-forward 15 years

Due Date: 31 October (audit) | 30 November (transfer pricing) | Tax audit by 30 September

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I have called Patron to file ITR for my 5 family members. I worked with Shubham Junjunwala and Amin Jain. It was a smooth process. They understand basics very well and respond promptly.

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From the very beginning, their approach has been highly professional, prompt, and solution-oriented. Every interaction reflected their deep knowledge and commitment to helping clients.

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Overview What Is ITR-6 Who Needs Services Process Documents Challenges Fees Timeline Benefits Tax Rates FAQs

ITR for Companies in Mumbai – Overview

📌 TL;DR - ITR for Companies Services at a Glance

Every company registered under the Companies Act in Mumbai must file ITR-6 annually on the income tax e-filing portal using a Digital Signature Certificate (DSC). Mumbai hosts India's highest concentration of registered companies – from BKC multinational subsidiaries with transfer pricing obligations to Powai startup Pvt Ltd companies with accumulated losses, from Andheri MIDC manufacturing companies claiming Section 115BAB concessional rates to Nariman Point holding companies managing investment income. ITR-6 is the most comprehensive ITR form, requiring detailed financial statements, tax computation, and multiple schedules covering every income head.

Mumbai's corporate landscape is extraordinarily diverse. BKC houses India headquarters of global banks, consulting firms, and technology companies filing ITR-6 with Schedule TP (transfer pricing) and Form 3CEB for international transactions. Powai and Andheri are home to thousands of startup Pvt Ltd companies – many loss-making in early years but needing ITR-6 filing to carry forward losses for investor due diligence. Nariman Point and Fort host holding companies, NBFCs with complex income streams. Andheri MIDC and Thane-Belapur house manufacturing companies claiming Section 115BAB rates. Learn more about ITR for Companies across India.

Patron Accounting's Mumbai office at Marine Lines provides complete ITR-6 filing for all company types – from financial statement preparation and tax computation to statutory and tax audit coordination, MAT computation, transfer pricing compliance, advance tax planning, and e-filing with DSC on the income tax portal.

Content is reviewed quarterly for accuracy.

What Is ITR-6 for Companies?

ITR-6 is the income tax return form prescribed for all companies registered under the Companies Act, 2013 (or the earlier Companies Act, 1956), except companies claiming exemption under Section 11 (income from property held for charitable or religious purposes, which file ITR-7).

ITR-6 is the most comprehensive ITR form in the Indian tax system. It requires detailed disclosure of: Part A-BS (Balance Sheet as per Ind AS or Schedule III), Part A-P&L (Profit and Loss Account), Part A-Manufacturing/Trading Account, Part B-TI (Total Income computation), Part B-TTI (Tax payable computation), and over 30 schedules covering depreciation (Schedule DEP), capital gains (Schedule CG), international transactions (Schedule TP), MAT computation (Schedule MAT), brought-forward losses (Schedule CFL), assets/liabilities (Schedule AL), shareholding (Schedule SH), and more.

For Mumbai companies, ITR-6 preparation involves coordinating multiple compliance streams. The statutory audit produces audited financials that feed into Part A-BS and Part A-P&L. The tax audit produces Form 3CA-3CD. The transfer pricing audit produces Form 3CEB. The ROC annual filing (AOC-4) uses the same audited financials. Patron integrates all these compliance streams into a unified ITR-6 preparation for Mumbai companies. Private Limited Company Compliance and Statutory Audit are closely linked services.

Key Terms for ITR for Companies:

ITR-6: Income tax return for all companies except Section 11 charitable trusts – filed electronically with DSC only
Section 115BAA: Concessional 22% corporate tax (25.17% effective) – forgo all exemptions, Form 10-IC, irrevocable
Section 115BAB: 15% rate (17.16% effective) for new manufacturing companies incorporated after 01.10.2019
MAT (Section 115JB): Minimum Alternate Tax at 15% of book profit – credit carry-forward for 15 years
Form 3CA-3CD: Tax audit report for companies audited under Companies Act
Form 3CEB: Transfer pricing report for international/specified domestic transactions

CA-Managed Company ITR-6 Filing

Which Mumbai Companies Must File ITR-6?

MNC subsidiaries at BKC and Nariman Point – Indian subsidiaries of global corporations filing ITR-6 with Schedule TP (transfer pricing), Form 3CEB, and international transaction disclosures. Due date: 30 November for TP cases. The most complex ITR-6 filings in Mumbai.

Startup Pvt Ltd companies at Powai, Andheri, and Lower Parel – Angel/VC funded startups. Many loss-making in early years but needing ITR-6 to carry forward losses (8 years) and unabsorbed depreciation (indefinitely). Section 79 restricts loss carry-forward if shareholding changes by more than 49% (relaxed for eligible startups). Pvt Ltd Company Compliance is essential alongside ITR-6.

Manufacturing companies at Andheri MIDC and Thane-Belapur – Companies claiming Section 115BAB (15% concessional rate) for new manufacturing. Depreciation on plant/machinery, R&D deduction under Section 35, and employment generation deduction are key ITR-6 considerations.

Holding and investment companies at Nariman Point and Fort – Companies with income from dividends (taxable post-2020), capital gains, and interest. MAT computation under Section 115JB is often the binding constraint.

NBFCs and fintech at BKC and Lower Parel – Complex revenue recognition, provisioning, NPA treatment. RBI guidelines may differ from IT Act treatment. NPA provisioning under Section 36(1)(viia).

Listed companies (BSE/NSE headquartered) – ITR-6 with additional listed-entity disclosures. Buyback tax treatment (post October 2024). Investor relations require timely filing.

One Person Companies (OPCs) – Solo-founder companies filing ITR-6 (not ITR-3/4). Same requirements as Pvt Ltd but simpler financials.

Company ITR-6 Filing Services Included

Service	What We Do
Financial Statement Preparation	Balance Sheet and P&L in Ind AS or Schedule III format. Tally/Zoho integration for startups; finance team coordination for BKC corporates
Tax Computation & Regime Optimisation	Computing tax under 115BAA (22%), 115BAB (15%), and default (30%). Recommending lowest effective rate for each Mumbai company
MAT Computation (Section 115JB)	Book profit computation, MAT vs regular tax comparison, MAT credit tracking and carry-forward for 15 years
Statutory & Tax Audit Coordination	Both audits produce reports feeding into ITR-6. Ensuring data consistency across statutory audit (AOC-4) and tax audit (Form 3CA-3CD)
Transfer Pricing (Form 3CEB)	TP documentation, Form 3CEB preparation, Schedule TP in ITR-6, and assessment support for BKC MNC subsidiaries
Advance Tax Planning	Quarterly computation (15 Jun, 15 Sep, 15 Dec, 15 Mar) for fluctuating Mumbai company revenue. Section 234B/234C interest minimisation
Loss Carry-Forward & Set-Off	Business loss (8 years), unabsorbed depreciation (indefinitely). Section 79 shareholding verification for Powai startup funding rounds
ROC-ITR Dual Compliance	Same audited financials for both AOC-4 (ROC) and ITR-6 (IT). Ensuring turnover, profit, and BS figures match across filings

Our Process

Company ITR-6 Filing Process in Mumbai

Patron Accounting's Mumbai team follows a structured 6-step process. ITR-6 is filed exclusively online with DSC. Our Marine Lines office handles all filings digitally.

Step 1

Finalise Audited Financial Statements

Complete the statutory audit and obtain the auditor's report. Prepare Balance Sheet, P&L, Cash Flow Statement, and Notes in Ind AS or Schedule III format. For Powai startups, Patron prepares financials within 30 days of year-end. For BKC corporates, Patron coordinates with the in-house finance team.

Audit completedFinancials signed

Statements Ready01

Step 2

Upload Tax Audit Report by 30 September

The statutory auditor prepares Form 3CA-3CD. Upload on income tax portal by 30 September. For companies with transfer pricing, Form 3CEB uploaded by 31 October. Patron coordinates the audit timeline to ensure both reports are uploaded within deadline.

Form 3CA-3CD uploaded3CEB if applicable

Audit Uploaded02

Step 3

Compute Tax Under Optimal Regime

Compute taxable income after all adjustments. Apply chosen rate: 115BAA (25.17% effective), 115BAB (17.16%), or default (30%+). Compute MAT under Section 115JB. Pay higher of regular tax or MAT. Patron computes under all three regime options for each Mumbai company.

3 regimes modelledMAT computed

Tax Optimised03

Step 4

Reconcile TDS/TCS Credits and Advance Tax

Download Form 26AS and AIS from portal. Reconcile TDS/TCS credits with company records. Verify 4 quarterly advance tax deposits. Compute net tax payable or refund. For BKC companies with TDS from 50-100 clients, Patron reconciles every credit line.

26AS reconciledAdvance tax verified

Credits Matched04

Step 5

Prepare ITR-6 Schedules and File with DSC

Populate all 30+ schedules: Part A-BS, Part A-P&L, Schedule BP, DEP, CG, OS, MAT, CFL, SH, AL, TP (if applicable). Validate using offline utility. File electronically with company's DSC. Patron files by 15 October (audit) or 15 November (TP) for Mumbai companies.

30+ schedules populatedDSC signed and filed

ITR-6 Filed05

Step 6

Monitor CPC Processing

ITR-6 filed with DSC is auto-verified. CPC Bengaluru processes and issues intimation under Section 143(1). If demand notice is issued (MAT credit, TDS mismatch, depreciation disallowance), respond within 30 days. Patron provides scrutiny representation for Mumbai companies.

Auto-verifiedCPC intimation handled

Complete06

Documents Required for Company ITR-6 in Mumbai

Company PAN and DSC: Company PAN registered with IT Department. Valid Class 2/3 DSC of authorised signatory (director/CS)
Audited Financial Statements: Balance Sheet, P&L, Cash Flow, Notes per Ind AS or Schedule III, signed by Board and statutory auditor
Tax Audit Report: Form 3CA-3CD signed by statutory/tax auditor, uploaded on income tax portal
Transfer Pricing Report (if applicable): Form 3CEB with transaction-wise international/specified domestic transaction details
TDS/TCS Certificates: Form 16A from all TDS-deducting clients. Form 26AS/AIS for credit reconciliation
Advance Tax Challans: Quarterly payment receipts with CIN and BSR code
Board Resolutions: For tax regime election (115BAA/115BAB), dividend declaration, and ITR signing authority
Form 10-IC/10-ID: For Section 115BAA (Form 10-IC) or 115BAB (Form 10-ID) opt-in, filed before ITR due date

Mumbai-Specific Tip: BKC MNC subsidiaries with related-party transactions exceeding Rs 1 crore must file Form 3CEB and maintain TP documentation. The TP study should use the most appropriate method (CUP, TNMM, PSM) based on comparable data. Patron prepares TP documentation and Form 3CEB for Mumbai companies with international transactions.

Common Challenges in Company ITR-6 Filing in Mumbai

Challenge	Impact	How Patron Accounting Solves It
Tax Regime Selection (115BAA vs 115BAB vs Default)	Irrevocable choice between three regimes. 115BAA forfeits all exemptions. Startups with losses may benefit from default rate initially	Three-scenario tax modelling for each company; regime recommendation with break-even analysis
MAT Credit Tracking	Nariman Point holding companies accumulate years of MAT credits. Multi-year tracking and Schedule MAT accuracy critical	Multi-year MAT credit register; correct Schedule MAT in ITR-6; CPC credit verification
Transfer Pricing Scrutiny (BKC MNCs)	Royalties, management fees, intercompany loans commonly challenged by Commissioner (International Tax) Mumbai	Comprehensive TP documentation, Form 3CEB, Schedule TP preparation, and assessment representation
Loss-Making Startup Compliance	Section 79 restricts loss carry-forward if >49% shareholding changes during fundraising. Missing one year forfeits losses permanently	Section 79 shareholding analysis; startup proviso application; annual ITR-6 even when loss-making
Ind AS vs Schedule III Format	Companies meeting Ind AS thresholds must use Ind AS financials. ITR-6 has separate Part A-BS sections. Wrong format causes fundamental errors	Correct accounting standard determination; Ind AS/Schedule III aligned ITR-6 preparation

Company ITR Filing Fees in Mumbai

Fee Component	Amount
ITR-6 Filing (Government)	Nil – no fee on incometax.gov.in
Corporate Tax (Section 115BAA)	25.17% effective (22% + 10% surcharge + 4% cess)
Corporate Tax (Section 115BAB)	17.16% effective (15% + 10% surcharge + 4% cess)
Corporate Tax (Default, turnover < Rs 400 cr)	~26% effective (25% + surcharge + cess)
MAT (Section 115JB)	15% of book profit (~15.6% effective)
Late Fee (Section 234F)	Rs 5,000
Patron Fee – Pvt Ltd/OPC ITR-6	Starting Rs 10,000
Patron Fee – Company ITR-6 with Audit	Starting Rs 15,000 (including tax audit coordination)
Patron Fee – MNC ITR-6 + TP	Custom quote (transfer pricing + Form 3CEB + ITR-6)
Patron – Accounting + Audit + ITR Bundle	Starting Rs 15,000/month (year-round books + audit + ITR-6)

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 ITR for Companies consultation - Call +91 945 945 6700 or WhatsApp us. No-obligation assessment.

Company ITR Filing Timeline

Stage	Estimated Timeline
Advance Tax – Q1 (15%)	15 June
Advance Tax – Q2 (45%)	15 September
Advance Tax – Q3 (75%)	15 December
Advance Tax – Q4 (100%)	15 March
Tax Audit Report (Form 3CA-3CD)	30 September – mandatory for all companies
TP Report (Form 3CEB)	31 October – MNC subsidiaries with international transactions
ITR-6 Filing (Audit Cases)	31 October – most Mumbai companies
ITR-6 Filing (Transfer Pricing)	30 November – MNC subsidiaries with Form 3CEB
Form 10-IC/10-ID (Regime Election)	Before ITR due date – irrevocable
Belated/Revised Return	31 December

Patron files 15 days before each statutory deadline for Mumbai companies, providing buffer for portal issues, client review, and last-minute adjustments.

Key Benefits

Why Choose Patron for Company ITR in Mumbai

Mumbai Office at Marine Lines

Walk-in for company tax computation, regime selection, and ITR-6 filing. Central location for BKC MNCs, Powai startups, Nariman Point holding companies, MIDC manufacturers.

All Company Types Covered

ITR-6 for Pvt Ltd, public, OPC, Section 8, foreign companies, NBFCs. From Rs 10 lakh startup to Rs 500 crore MNC subsidiary – full spectrum coverage.

Integrated Compliance

Accounting + statutory audit + tax audit + ROC filing + ITR-6 as one seamless workflow. Data flows consistently, eliminating discrepancies that trigger scrutiny.

Transfer Pricing & International Tax

TP documentation, Form 3CEB, Schedule TP with ALP determination. Assessment proceedings and MAP assistance for BKC MNC subsidiaries.

Trusted by Mumbai Companies

Trust Signals: 10,000+ Businesses | 4.9 Google Rating | 50,000+ Documents Filed | 15+ Years

“Patron files ITR-6 for our three group companies in Mumbai. The statutory-tax audit-ROC-ITR integration ensures zero data discrepancies across all filings.”

— CFO, Manufacturing Group, MIDC

Offices in Pune, Mumbai, Delhi, and Gurugram serving companies with ITR-6 and corporate tax compliance.

Corporate Tax Rate Comparison for Mumbai Companies

Regime	Section	Effective Rate	Best For (Mumbai)
Concessional (No Exemptions)	115BAA	25.17% (22% + surcharge + cess)	Powai startups (profitable), BKC services companies with minimal exemptions
New Manufacturing	115BAB	17.16% (15% + surcharge + cess)	MIDC/Thane new manufacturing units incorporated after 01.10.2019
Default (Full Exemptions)	Regular	~34.94% (30% + surcharge + cess, turnover > Rs 400 cr)	Companies with significant 80IA/80IB/10AA/additional depreciation
Default (Small Company)	Regular	~26% (25% + surcharge + cess, turnover < Rs 400 cr)	Small Mumbai Pvt Ltd with material deductions
MAT (Minimum Floor)	115JB	~15.6% of book profit	Nariman Point holding companies with high book profits

Related Services

Explore related services for your company:

ITR for Companies (India Overview) – National-level company ITR-6 filing
Private Limited Company Compliance – Annual ROC compliance for Pvt Ltd
Statutory Audit Services – Audit under Companies Act 2013
Accounting Services – Year-round bookkeeping and financial reporting
ROC Notice – Handling MCA/ROC compliance notices
TDS Return Filing – Quarterly TDS compliance
Income Tax Return Filing
GST Returns

Legal & Compliance Framework for Company ITR

Section 139(1): Due date for company ITR: 31 October (audit), 30 November (TP)
Section 44AB: Tax audit mandatory for all companies under Companies Act audit mandate
Section 115BAA: Concessional 22% rate (Form 10-IC, irrevocable)
Section 115BAB: 15% rate for new manufacturing companies (Form 10-ID)
Section 115JB: MAT at 15% of book profit; credit carry-forward 15 years
Section 92E: Transfer pricing audit for international/specified domestic transactions (Form 3CEB)
Section 79: Loss carry-forward restricted if >49% shareholding change (startup proviso available)
Section 234F: Late filing fee Rs 5,000
Section 234A/234B/234C: Interest on late filing, late advance tax, and deferment
ITR-6 Filing: Electronic only with DSC. No physical/EVC filing for companies
CPC Bengaluru: Processes ITR-6 and issues Section 143(1) intimation

Filing Portal: incometax.gov.in

Frequently Asked Questions – ITR for Companies in Mumbai

Get answers about ITR-6, corporate tax rates, MAT, tax audit, DSC requirements, and more for Mumbai companies.

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Which IT office handles company ITR in Mumbai?

ITR-6 is filed electronically on incometax.gov.in and processed by CPC Bengaluru. The jurisdictional Assessing Officer (based on company PAN zone) handles scrutiny and assessment. For transfer pricing cases, the Commissioner (International Tax) Mumbai handles assessment. Tax audit reports are uploaded on the same portal. No physical filing is accepted for companies. Patron files ITR-6 digitally for all Mumbai company clients.

What is the due date for company ITR-6 filing?

For companies requiring audit (virtually all companies): 31 October. For companies with international transactions requiring transfer pricing report (Form 3CEB): 30 November. Tax audit report must be uploaded by 30 September. Late filing attracts Rs 5,000 fee (Section 234F) plus 1% per month interest on unpaid tax (Section 234A). Belated return can be filed until 31 December.

What is Section 115BAA and should my company opt for it?

Section 115BAA offers a concessional 22% tax rate (25.17% effective) for domestic companies that forgo all exemptions and deductions (except depreciation). Companies must file Form 10-IC before the ITR due date. The election is irrevocable. For Mumbai Pvt Ltd companies without significant exemptions (80IA, 10AA, additional depreciation), 115BAA typically results in lower tax. Patron models both scenarios before recommending.

Is tax audit mandatory for all companies?

Yes. All companies registered under the Companies Act must have their accounts audited (statutory audit). The statutory audit report in Form 3CA-3CD satisfies the tax audit requirement under Section 44AB. The report must be uploaded on the income tax portal by 30 September. Patron coordinates both statutory and tax audit for Mumbai companies.

What is MAT and when does it apply?

Minimum Alternate Tax (MAT) under Section 115JB applies when a company's regular tax liability is less than 15% of its book profit. The company pays the higher of regular tax or MAT. The excess MAT paid becomes credit carry-forwardable for 15 years. Common for Mumbai holding companies and investment vehicles with high book profits but low taxable income.

Can a loss-making Mumbai company skip ITR-6 filing?

No. Every company must file ITR-6 regardless of profit or loss. Filing preserves business loss carry-forward (8 years) and unabsorbed depreciation (indefinitely). For Powai startups with accumulated losses, missing one year permanently forfeits that year's loss carry-forward. ROC compliance (AOC-4, MGT-7) also requires the same audited financials.

Can a company file ITR-6 without DSC?

No. Companies must file ITR-6 using a Digital Signature Certificate only. Unlike individuals who can use Aadhaar OTP or EVC, companies have no alternative verification method. A valid Class 2 or 3 DSC of the authorised signatory must be registered on the income tax portal. Patron ensures DSC registration and validity before filing season.

Quick Answers

Company ka ITR kab file karna hota hai? 31 October (audit cases – virtually all companies). 30 November (transfer pricing cases – MNC subsidiaries). Tax audit report 30 September tak upload karna hota hai. Late fee Rs 5,000.

Kaunsa form use hota hai company ke liye? ITR-6. DSC se file karna mandatory hai. Physical filing allowed nahi hai. Section 11 charitable companies ITR-7 file karti hain.

115BAA kya hai aur kab opt kare? 22% concessional rate (25.17% effective). Form 10-IC file karo. Saare exemptions chhodne padte hain. Irrevocable hai. Agar significant exemptions claim karne hain toh default 30% better ho sakta hai.

Don't Miss Company ITR-6 Deadlines

Tax audit report must be uploaded by 30 September – missing this blocks ITR-6 filing. ITR-6 is due by 31 October (30 November for TP). Late filing triggers Rs 5,000 fee, 1%/month interest, and loss carry-forward restrictions. A Powai startup with Rs 2 crore accumulated losses that misses the deadline loses the entire year's losses permanently.

Get your company ITR-6 filed accurately – Call +91 945 945 6700 or WhatsApp us.

Get CA-Managed Company ITR-6 Filing in Mumbai

ITR-6 filing for companies in Mumbai spans the full corporate spectrum – from BKC MNC subsidiaries with transfer pricing to Powai startups carrying forward losses, from MIDC manufacturers claiming 115BAB rates to Nariman Point holding companies managing MAT credits, from BSE/NSE listed companies to One Person Companies.

Patron Accounting's Mumbai office at Marine Lines provides integrated company ITR-6 compliance – from year-round accounting to statutory and tax audit coordination, corporate tax regime optimisation, MAT computation, transfer pricing, advance tax planning, and e-filing with DSC.

With offices in Pune, Mumbai, Delhi, and Gurugram, 10,000+ businesses served, and 4.9 Google rating, Patron Accounting LLP delivers accurate, timely company ITR-6 filing across India.

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Content Created: 24 March 2026 | Last Updated: 24 March 2026 | Next Review: 24 June 2026 | Reviewed By: CA & CS Team, Patron Accounting LLP

This content is reviewed quarterly for accuracy of corporate tax rates, ITR-6 schedules, and filing deadlines. Freshness Tier: 1. IT Act 2025 effective 01.04.2026.