ITR-3 & ITR-4 Filing Due Date AY 2026-27: 31 August Deadline for Businesses & Professionals

If you earn income from a business, profession, freelancing activity or another source that requires you to file ITR-3 or ITR-4, your income tax return deadline may be different from the July deadline applicable to many salaried taxpayers.

For Assessment Year 2026-27, eligible taxpayers having business or professional income and not requiring a tax audit have until 31 August 2026 to file their income tax return.

The separate August deadline is especially relevant for proprietors, consultants, freelancers, professionals, eligible presumptive taxpayers and individuals reporting business income through ITR-3 or ITR-4.

However, the form you use does not by itself decide your filing deadline. A taxpayer who is required to get accounts audited may have a later return-filing deadline. That makes it important to identify both the correct ITR form and whether a tax audit requirement applies before relying on 31 August.

This guide explains the ITR-3 and ITR-4 filing due date for AY 2026-27, who can use each form, when the 31 August deadline applies, documents to prepare, common filing mistakes and what happens if the deadline is missed.

ITR-3 and ITR-4 Due Date for AY 2026-27 at a Glance

The Income Tax Department has specifically confirmed 31 August 2026 as the due date for ITR-4 for AY 2026-27 and separately recognises 31 August for non-audit business and professional cases.

Taxpayers should also remember that AY 2026-27 relates to income earned during FY 2025-26. The return for this period continues to be filed under the provisions and forms applicable to the Income-tax Act, 1961.

If you want a broader overview of the year's forms and filing changes, you can also read CompuTax's AY 2026-27 ITR filing guide.

Why Is the ITR-3 and ITR-4 Deadline 31 August 2026?

The filing calendar for AY 2026-27 separates non-audit taxpayers having business or professional income from many other individual taxpayers.

Until the previous filing cycle, people often associated 31 July with almost every individual non-audit return. For AY 2026-27, business and professional taxpayers covered by the relevant non-audit category have an additional month, making 31 August 2026 an important standalone filing deadline.

The change recognises a practical difference between a straightforward salary return and a business return. Even a small proprietor or freelancer may need to reconcile:

• business receipts and expenses;
• bank transactions;
• GST turnover, where applicable;
• TDS appearing in Form 26AS;
• income reported in AIS;
• profit and loss figures;
• balance-sheet information;
• presumptive income calculations;
• advance tax and self-assessment tax; and
• other personal income that must also be reported in the return.

The extra month does not mean taxpayers should wait until the last week of August. Business returns usually involve more reconciliation than salary-only returns, and discrepancies are easier to resolve when filing begins early.

Who Should File ITR-3 for AY 2026-27?

ITR-3 is primarily meant for individuals and Hindu Undivided Families whose total income includes income chargeable under the head Profits and Gains of Business or Profession and who are not eligible to file ITR-1, ITR-2 or ITR-4.

Common examples include:

• proprietors running a business;
• freelancers or consultants reporting actual business or professional income;
• professionals who are not using the eligible presumptive taxation route;
• individuals with business income along with salary, house-property income or capital gains;
• individuals undertaking F&O or intraday transactions that are treated as business income;
• partners receiving taxable remuneration, bonus, commission or interest from a partnership firm, depending on their facts; and
• taxpayers whose income profile makes them ineligible for the simplified ITR-4 form.

ITR-3 is more detailed than ITR-4. Depending on the taxpayer's circumstances, it may require information relating to financial statements, business schedules, depreciation, capital gains, assets and liabilities, losses and other disclosures.

If you are unsure whether ITR-3, ITR-4 or another form is applicable, refer to the existing ITR form selection guide for AY 2026-27 before preparing the return.

Who Should File ITR-4 for AY 2026-27?

ITR-4, also known as Sugam, is a simplified return available to eligible resident individuals, HUFs and resident firms other than LLPs that declare business or professional income on a presumptive basis under Sections 44AD, 44ADA or 44AE of the Income-tax Act, 1961.

For AY 2026-27, ITR-4 is generally available where the taxpayer meets the prescribed eligibility conditions, including a total income of up to ₹50 lakh.

Depending on eligibility, the return can include presumptive business or professional income along with specified income such as salary or pension, one house property and eligible income from other sources.

Presumptive Taxation Thresholds Relevant to ITR-4

Importantly, the turnover or gross-receipt threshold of a presumptive scheme is not the same thing as the ₹50 lakh total-income ceiling applicable to ITR-4 eligibility. Both sets of conditions must be checked.

ITR-3 vs ITR-4: What Is the Difference?

Choosing between ITR-3 and ITR-4 should therefore be based on the nature of income and eligibility, not simply on which return is shorter.

Does Every ITR-3 Taxpayer Have a 31 August 2026 Deadline?

No. This is one of the most important distinctions to understand.

The 31 August deadline applies to the relevant non-audit business and professional cases. If the taxpayer is required to get accounts audited under Section 44AB or another applicable provision, the return-filing deadline may instead be 31 October 2026.

For example, the general tax-audit threshold under Section 44AB is ₹1 crore of business turnover, but it may increase to ₹10 crore where the prescribed limits on cash receipts and cash payments are satisfied. For a profession, the general Section 44AB threshold is ₹50 lakh of gross receipts, subject to the law and other applicable conditions.

Presumptive-taxation rules can also affect whether an audit becomes necessary. Therefore, turnover alone should not be used to decide the filing deadline without checking the complete facts.

If there is any uncertainty about audit applicability, resolve it before treating 31 August as the final filing date.

31 August Is Also Important If You Want the Old Tax Regime

Business and professional taxpayers should pay special attention to Form 10-IEA.

The new tax regime is the default regime. An eligible taxpayer having income from business or profession who wants to opt for the old tax regime is generally required to furnish Form 10-IEA on or before the due date under Section 139(1).

For an eligible non-audit business or professional taxpayer whose applicable return due date is 31 August 2026, this makes the August deadline relevant not only for filing ITR-3 or ITR-4, but also for completing the tax-regime choice correctly.

Do not wait until the return is ready to think about Form 10-IEA. Compare the tax liability under both regimes first and complete any required regime-related compliance before the applicable due date.

Documents to Keep Ready Before Filing ITR-3 or ITR-4

A business or professional return should not be prepared only from the figures visible in the pre-filled ITR. Start with the underlying financial information and reconcile it against the tax portal.

Keep the following records ready, as applicable:

• PAN and Aadhaar details;
• bank-account details;
• Form 26AS;
• Annual Information Statement (AIS);
• Taxpayer Information Summary (TIS);
• business turnover or professional gross-receipt records;
• profit and loss account;
• balance-sheet information where required;
• bank statements;
• books of account and expense records;
• GST turnover and return data where applicable;
• TDS certificates;
• advance-tax challans;
• self-assessment-tax payment details;
• capital-gain statements where relevant;
• interest and dividend statements;
• home-loan and house-property information;
• details of brought-forward losses;
• deduction and investment proofs where relevant; and
• Form 10-IEA acknowledgement where applicable.

Before filing, compare the information in your books and supporting records with the information reported to the Income Tax Department. CompuTax has a detailed guide explaining how to cross-check AIS before filing your ITR.

How to File ITR-3 or ITR-4 for AY 2026-27

Step 1: Confirm the Correct Assessment Year

Select AY 2026-27, which corresponds to income earned during FY 2025-26.

Step 2: Identify the Correct ITR Form

Review the nature of income, residential status, presumptive-tax eligibility, capital gains, foreign assets and other relevant conditions before choosing between ITR-3 and ITR-4.

Step 3: Determine Whether Tax Audit Applies

Do this before relying on the 31 August deadline. Taxpayers covered by an audit requirement follow a different compliance schedule.

Step 4: Reconcile AIS and Form 26AS

Compare TDS, interest, dividends, securities transactions and other reported information with your books and financial records. Do not assume pre-filled data is automatically complete or correct.

Step 5: Finalise Business or Professional Income

For ITR-3, prepare the relevant income computation and financial information based on the taxpayer's actual records.

For ITR-4, ensure the taxpayer genuinely qualifies for the relevant presumptive taxation provision before using the simplified form.

Step 6: Compare Old and New Tax Regimes

Calculate the liability under the applicable regimes rather than selecting one by habit. If a business or professional taxpayer intends to opt for the old regime, check whether Form 10-IEA must be filed before the return due date.

Step 7: Calculate Final Tax Liability

After considering TDS, TCS, advance tax and other eligible tax credits, calculate whether any self-assessment tax remains payable.

If you need to review the current advance-tax schedule, refer to CompuTax's Advance Tax Calculator and Due Dates FY 2026-27 guide.

Step 8: Validate the Return Before Submission

Check bank information, schedules, tax credits, financial figures and mandatory disclosures carefully. Validation errors are easier to correct before uploading than after submission.

Step 9: File and E-Verify the Return

Filing is not complete merely because the return has been uploaded. Complete the prescribed verification process within the permitted period using an available verification method.

Common ITR-3 and ITR-4 Filing Mistakes to Avoid

1. Assuming Every Business Taxpayer Has Until 31 August

A taxpayer requiring a tax audit may have a different return-filing deadline. Always check audit applicability first.

2. Filing ITR-4 Only Because It Is Simpler

ITR-4 can be used only when all prescribed eligibility conditions are met. A simpler form is not necessarily the correct form.

3. Ignoring AIS Because Books Are Already Finalised

Your books show what you recorded. AIS shows information that third parties have reported to the Income Tax Department. Both need to be reconciled.

4. Treating GST Turnover and Income-Tax Turnover as Unrelated

Where GST registration applies, material inconsistencies between GST information and the figures reported in the income-tax return should be examined and explained before filing.

5. Forgetting Form 10-IEA

A business or professional taxpayer who wants the old tax regime may have a separate Form 10-IEA requirement that must be completed within the applicable time limit.

6. Waiting Until 31 August to Start Reconciliation

The deadline is the final filing date, not the recommended date to begin preparing the return. Missing TDS credits, incorrect AIS entries or mismatched books can take time to investigate.

7. Using Outdated Filing Software

ITR schemas and validation rules change between assessment years. Software used for AY 2026-27 should support the forms, validations and computation requirements applicable to this assessment year.

What Happens If You Miss the 31 August 2026 ITR Deadline?

If 31 August 2026 is your applicable original filing deadline and you fail to file by that date, you can generally still submit a belated return within the permitted time.

For AY 2026-27, the belated-return deadline is 31 December 2026, subject to the applicable provisions.

However, filing late can have consequences.

• A late-filing fee of up to ₹5,000 may apply, depending on the taxpayer's circumstances.
• Interest may apply where tax remains unpaid.
• Certain losses may not be eligible to be carried forward if the return is not filed within the original due date.
• Regime-related choices available only within the original filing timeline may be affected.
• Refund processing may be delayed.

Filing a belated return is therefore a fallback, not an alternative filing strategy.

For a broader explanation of belated returns and late filing, see CompuTax's existing ITR filing deadline and belated return guide.

Why CA Firms Should Not Leave ITR-3 and ITR-4 Filing Until the Last Week

The August deadline is particularly demanding for Chartered Accountants and tax professionals because business returns are rarely identical.

A single practice may simultaneously be handling:

• presumptive business cases;
• regular business accounts;
• freelancer and professional returns;
• F&O income;
• capital gains;
• partner returns;
• AIS mismatches;
• old-versus-new-regime comparisons;
• advance-tax adjustments; and
• returns that may or may not require tax audit.

Manually checking each client against separate spreadsheets, portal downloads and tax calculations makes the filing rush harder than it needs to be.

CompuTax Professional Income Tax Software is designed for CAs, tax professionals, businesses and other users managing income-tax compliance. It supports income and tax computation, e-return filing, Form 26AS data import, advance-tax estimation, e-verification-related activities and other return-filing workflows.

For professional practices handling multiple compliance areas, CompuTax also explains how an integrated workflow can help in its guide to CA practice management for ITR, GST and TDS.

Final Checklist Before the 31 August 2026 Deadline

• Confirm that AY 2026-27 is selected.
• Verify whether ITR-3 or ITR-4 is the correct form.
• Check whether a tax audit requirement applies.
• Reconcile books with AIS and Form 26AS.
• Check TDS and TCS credits.
• Reconcile GST information where applicable.
• Finalise business/professional income.
• Check brought-forward losses.
• Compare old and new tax regimes.
• File Form 10-IEA within the applicable deadline where required.
• Calculate and pay any self-assessment tax due.
• Validate the return before submission.
• File before 31 August 2026 where that is your applicable due date.
• Complete e-verification after filing.

Frequently Asked Questions

What is the ITR-3 due date for AY 2026-27?

For an eligible taxpayer having business or professional income who is not required to undergo tax audit, the ITR filing due date for AY 2026-27 is 31 August 2026. Audit cases generally follow the applicable later deadline.

What is the ITR-4 due date for AY 2026-27?

The Income Tax Department has confirmed that the due date for filing ITR-4 for AY 2026-27 is 31 August 2026 for the applicable category of taxpayers.

Is 31 August 2026 an extension of the July ITR deadline?

No. The August date is a separate statutory filing deadline applicable to specified categories, including relevant non-audit business and professional taxpayers. It should not be treated as a blanket extension of the 31 July deadline.

Can a freelancer file ITR-4?

A freelancer or professional may be eligible for ITR-4 where the taxpayer satisfies the conditions of the applicable presumptive taxation provision, including Section 44ADA where relevant, and also meets all other ITR-4 eligibility requirements. Otherwise, ITR-3 may be required.

Which ITR is applicable for F&O trading?

Where F&O activity results in income taxable as business income, ITR-3 is commonly relevant for individuals and HUFs. The exact return and audit position should be determined from the taxpayer's complete facts, turnover calculation and other income.

Is ITR-4 compulsory if I use presumptive taxation?

ITR-4 is a simplified form available to taxpayers who satisfy its eligibility conditions. The applicable form should still be selected after considering the taxpayer category, total income and other sources of income or disclosures.

Do I need Form 10-IEA before filing ITR-3 or ITR-4?

An eligible taxpayer having income from business or profession who wants to opt out of the default new tax regime and use the old tax regime generally needs to furnish Form 10-IEA within the applicable due date under Section 139(1).

What if my business requires a tax audit?

If a tax audit requirement applies, do not rely on the 31 August non-audit deadline. Audit reports and the final ITR follow their respective statutory timelines. For AY 2026-27, the tax-audit report is generally due before the corresponding audit-case return deadline.

Can I file ITR-3 or ITR-4 before 31 August?

Yes. There is no advantage in waiting for the final day once your information is complete and reconciled. Filing early leaves time to resolve validation or reporting issues and reduces last-day pressure.

What happens if I file ITR-4 after 31 August 2026?

If 31 August is your applicable original due date, a return filed later would generally be treated as a belated return. Late fees, interest and other restrictions may apply depending on your income and tax position.

Which software can be used to prepare ITR-3 and ITR-4 for multiple clients?

CA firms and tax professionals can use CompuTax Professional to manage income-tax computation and return-filing workflows for multiple taxpayers. The software includes features for tax computation, e-return filing, Form 26AS import, advance-tax estimation, validation and other compliance activities.

Conclusion

31 August 2026 is the key ITR filing deadline for AY 2026-27 for relevant taxpayers earning business or professional income who are not covered by the tax-audit filing timeline.

The extra month after July should be used for accurate reconciliation, not procrastination. Confirm whether ITR-3 or ITR-4 applies, check the audit position, reconcile AIS and Form 26AS, review the tax regime, complete Form 10-IEA where required and validate the return well before submission.

For CA firms and tax professionals managing a large number of business returns, using updated income tax software can reduce repetitive work, improve validation and help manage the August filing rush more systematically.

If you want to know more about CompuTax Professional or discuss the right income-tax software for your practice or business, contact the CompuTax team.

Disclaimer

This article is intended for general informational purposes and reflects the applicable guidance available as of 19 August 2026. Income-tax provisions, filing utilities, due dates and government notifications may be amended or extended. Taxpayers should verify the latest position on the official Income Tax Department portal or consult a qualified tax professional before making filing or tax-regime decisions.