How to File ITR for a Private Limited Company or OPC (FY 2025-26 Complete Guide)

How to File ITR for a Private Limited Company or OPC (FY 2025-26 Complete Guide)

Unlike individuals, every private limited company and One Person Company (OPC) registered in India must file an income tax return each year regardless of whether it earned any income, made a loss, or remained entirely dormant after incorporation. This is a statutory obligation tied to the company's legal existence, not its turnover — a distinction that catches many first-time founders off guard when their company shows zero revenue in year one.

Filing correctly involves more moving parts than an individual return: selecting the right ITR form, determining whether a tax audit is triggered, computing Minimum Alternate Tax where applicable, and authenticating the return with a Digital Signature Certificate rather than a simple OTP. This guide walks through the entire process end to end for FY 2025-26 (Assessment Year 2026-27).

Who Must File and Why It's Mandatory

Every company incorporated under the Companies Act — private limited, public limited, or OPC — is required to file an income tax return annually, irrespective of profit, loss, or even complete business inactivity. This applies from the year of incorporation itself, even if the company has not yet commenced commercial operations. A dormant or shell company with zero transactions still needs to file a NIL return; skipping this on the assumption that "there's nothing to report" is one of the most frequent and costly mistakes newly incorporated founders make, since the return-filing obligation is entirely independent of the annual ROC filings (AOC-4, MGT-7) that are often filed alongside it.

Which ITR Form Applies

Private limited companies and OPCs are required to file ITR-6, the form specifically designed for companies other than those claiming exemption under section 11 (income from property held for charitable or religious purposes). ITR-6 is a comprehensive form that captures the balance sheet, profit and loss account, depreciation schedule, tax computation, and various disclosure schedules relevant to corporate taxpayers.

Companies claiming exemption under section 11 (typically Section 8 companies operating for charitable purposes) instead file ITR-7, which is designed for entities required to file returns under specific provisions relating to charitable trusts, political parties, and similar categories.

ITR-6 must be filed electronically and is one of the return forms that does not have a "paper" alternative — the entire process, from data entry to verification, happens online through the income tax e-filing portal or authorised utilities.

Tax Audit: When It's Triggered and Why It Matters

Whether a company needs a tax audit under Section 44AB before filing its return depends primarily on turnover:

• If the company's total turnover or gross receipts in the financial year exceeds the applicable threshold — historically set around ₹1 crore, with an enhanced threshold of roughly ₹10 crore available where cash transactions are kept within a small specified percentage (typically around 5%) of total transactions — a tax audit becomes mandatory.
• The tax audit is conducted by a practising Chartered Accountant, who issues Form 3CA/3CB and Form 3CD, which must be filed on the income tax portal before the company's ITR can be completed with full audit particulars.
• Even companies below the turnover threshold may voluntarily get audited, or may be required to for other regulatory reasons (such as loan covenants), though this doesn't change the statutory ITR filing requirement itself.

Because tax audit completion is a prerequisite input for accurately filling several schedules in ITR-6 (particularly depreciation, disallowances, and various compliance certifications), companies subject to audit should treat the audit as the first task on their filing timeline, not something to run in parallel with return preparation.

Computing Tax Liability: Corporate Rates and MAT

Corporate tax rates in India vary depending on the regime the company opts into:

• Concessional regime under Section 115BAA — many domestic companies opt into a reduced flat rate (historically 22%, plus applicable surcharge and cess) in exchange for foregoing most exemptions and incentive deductions.
• New manufacturing company regime under Section 115BAB — an even lower concessional rate (historically 15%, plus surcharge and cess) is available to certain new manufacturing companies meeting specified conditions.
• Standard/default rates — companies that do not opt into the concessional regimes are taxed at the regular slab applicable to domestic companies, which itself varies by turnover threshold in the base year, plus applicable surcharge and cess.

Minimum Alternate Tax (MAT) under Section 115JB applies to companies whose tax liability computed under normal provisions is lower than a specified percentage (historically 15%) of their "book profit" as adjusted per the MAT provisions. Where MAT applies, the company pays tax on this higher book-profit-based figure instead of the normal computation, but generally earns MAT credit that can be carried forward and set off against regular tax liability in future years, subject to a time limit. Companies that have opted for the Section 115BAA or 115BAB concessional regimes are typically exempt from MAT, which is one of the key trade-offs founders weigh when choosing a tax regime.

Documents and Information Required

Before starting the return, gather:

• Audited financial statements — balance sheet, profit & loss account, and notes to accounts (or unaudited financials if below the tax audit threshold)
• Tax audit report (Form 3CA/3CB and 3CD), if applicable
• Details of TDS/TCS credit as per Form 26AS and AIS
• Bank statements for all company accounts for the financial year
• Fixed asset register and depreciation working (as per Income Tax Act rates, which often differ from Companies Act depreciation)
• Details of loans taken/given, investments, and related-party transactions
• GST returns and reconciliation, where applicable, since mismatches between GST turnover and ITR turnover are a common scrutiny trigger
• Advance tax and self-assessment tax challans paid during the year
• PAN and DSC (Digital Signature Certificate) of the authorised signatory (typically a director)
• Details of shareholding pattern and any changes during the year, for schedule reporting

Step-by-Step Filing Process

1. Complete books of accounts and, if applicable, the statutory audit and tax audit before starting the return, since ITR-6 requires figures consistent with the audited financials.
2. Reconcile TDS credit against Form 26AS/AIS and correct any mismatches with deductors before filing, to avoid processing delays or demand notices later.
3. Compute tax liability under the applicable regime (115BAA, 115BAB, or standard rates), and separately compute MAT liability if the concessional regime hasn't been opted for, to determine which is higher.
4. Prepare and validate ITR-6 using the income tax department's utility or a professional filing tool, ensuring all schedules — balance sheet, P&L, depreciation, MAT computation if applicable, and TDS schedule — tie out to the audited figures.
5. Pay any balance self-assessment tax due before filing, using Challan 280 with the appropriate minor head.
6. File the return electronically through the income tax e-filing portal.
7. Verify the return using a Digital Signature Certificate (DSC) of the authorised director — companies cannot use Aadhaar OTP or EVC to verify ITR-6; DSC-based verification is mandatory. An unverified return is treated as not filed at all, so this step is not optional.
8. Download and retain the acknowledgement (ITR-V) and the filed return copy for the company's records.

Due Dates

• Companies not subject to tax audit (rare in practice, since most active companies exceed the audit turnover threshold or file voluntarily for other reasons): the general due date for filing typically falls around 31 October of the assessment year, since companies are treated as "corporate assessees" requiring audit-linked deadlines in most cases — always confirm the specific due date applicable for the year, as government has periodically extended corporate deadlines.
• Companies subject to tax audit: the due date is generally 31 October of the assessment year, after the tax audit report is filed (typically due around 30 September, ahead of the ITR deadline).
• Companies with international or specified domestic transactions requiring a transfer pricing report (Form 3CEB): the due date is generally extended to around 30 November of the assessment year.
• A belated return can typically still be filed after the due date, up to 31 December of the assessment year (or a date notified for the year), but this forfeits certain benefits like carrying forward business losses and may attract late fees and interest.

Penalties for Late or Non-Filing

• Late filing fee under Section 234F — typically up to ₹5,000 for delayed filing beyond the due date (with a lower cap for smaller taxpayers, though this generally does not apply to companies given their size).
• Interest under Sections 234A/234B/234C — for delay in filing, shortfall in advance tax, and deferment of instalments respectively, each computed broadly at 1% per month on the relevant shortfall.
• Loss of carry-forward benefit — a company that files late (beyond the original due date) generally loses the ability to carry forward business losses (though unabsorbed depreciation carry-forward is typically unaffected).
• Prosecution risk for prolonged default — in cases of significant tax evasion or repeated non-filing, the Income Tax Act provides for prosecution, though this is generally reserved for serious and wilful defaults rather than routine delays.
• ROC and MCA consequences — while separate from income tax, companies that also default on annual ROC filings (AOC-4/MGT-7) alongside ITR compound their compliance risk and can face director disqualification in extreme, sustained cases of default.

Common Pitfalls

• Assuming a dormant company doesn't need to file — even a company with zero transactions must file a NIL ITR-6 every year until formally struck off.
• Verifying with Aadhaar OTP instead of DSC — this simply doesn't work for companies; the return remains unverified and is treated as not filed.
• Mismatched turnover between GST returns and ITR — a frequent trigger for scrutiny notices, especially where GST returns show materially different revenue than the books.
• Missing the MAT computation entirely — companies that skip MAT comparison and file based only on normal tax computation can end up under-reporting liability if MAT is actually higher.
• Treating tax audit and statutory (Companies Act) audit as the same exercise — they serve different purposes and require separate reports (though often performed by the same CA around the same time).
• Not reconciling TDS credit before filing — mismatches between TDS claimed in the return and what's reflected in Form 26AS/AIS is one of the most common causes of processing delays and automated adjustment notices.

FAQs

Does a company with zero income still need to file ITR?

Yes. Filing is mandatory for every registered company regardless of income, turnover, or activity level — a NIL ITR-6 must be filed each year until the company is officially struck off or dissolved.

Which ITR form does a private limited company or OPC use?

Both use ITR-6, unless the company is claiming exemption under section 11 (typically Section 8/charitable companies), in which case ITR-7 applies instead.

Can a company verify its ITR using Aadhaar OTP?

No. Companies must verify their income tax return using a Digital Signature Certificate (DSC) of an authorised director — OTP-based e-verification (Aadhaar or otherwise) is not available for corporate returns.

What is the difference between tax audit and MAT?

Tax audit under Section 44AB is a compliance check on turnover-linked accounting accuracy, conducted by a CA. MAT (Minimum Alternate Tax) is a separate tax computation ensuring companies with high book profits but low taxable income (due to exemptions/deductions) still pay a minimum level of tax. The two are related but distinct requirements.

Is tax audit mandatory for every private limited company?

Only if turnover/gross receipts exceed the applicable threshold (historically around ₹1 crore, extendable to roughly ₹10 crore where cash transactions are minimal). Companies below the threshold may still be audited under the Companies Act (statutory audit is mandatory for all companies) but may not need a separate tax audit under Section 44AB.

What happens if a company misses the ITR due date?

It can generally still file a belated return (typically up to 31 December of the assessment year), but loses the ability to carry forward business losses, and becomes liable for late fees under Section 234F and interest under Sections 234A/234B/234C.

Do newly incorporated companies with no revenue in year one still need a tax audit?

Only if their turnover crosses the applicable threshold — a company with genuinely nil or minimal turnover in its first year typically will not trigger mandatory tax audit, though a NIL or low-turnover ITR-6 filing is still required.

Can a company choose between the concessional tax regime and the standard rate every year?

Generally, once a company opts for Section 115BAA, the option applies for that and subsequent years and cannot easily be withdrawn. Section 115BAB has additional eligibility conditions tied to being a new manufacturing company. It is advisable to evaluate this choice carefully with a CA before the first year it's exercised, since switching back is often restricted.

Why Founders Choose Legal Suvidha

For 14 years we have taken founders end-to-end — from choosing the right structure and incorporating, to first-year compliance, funding readiness, and ongoing ROC/GST/tax filings — so you never have to switch providers as you grow.

• One team for the whole journey — start, launch, post-launch and every annual filing after.
• Fixed, all-inclusive pricing — professional plus government fees itemised, no hidden charges.
• A dedicated CA/CS who owns your case and does not disappear after payment.
• 6,000+ founders served, 4.9/5 rating, DPIIT-recognised, 100% online.

Talk to a Legal Suvidha expert today for a free consultation and an exact, transparent quote on WhatsApp (8130645164).