Tax Audit Report by 30 September, ITR by 31 October: Complete Calendar

By CA Nikhil Gupta · 23 July 2026

Scope: FY 2025–26 (1 April 2025 to 31 March 2026), filed for AY 2026–27

Finin2min Summary

Likely return: ITR-3 for an individual/HUF business case
Normal filing date: Audit report generally 30 September 2026; ITR generally 31 October 2026
Starting income head: Audited business or professional income
Core control: classify the transaction, reconcile gross figures, preserve evidence and only then choose the ITR.
Transition point: FY 2025–26 income is filed for AY 2026–27 under the Income-tax Act, 1961 despite filing after 1 April 2026.

The Answer in One Table

Question	Finin2min answer
Income period	FY 2025–26 (1 April 2025 to 31 March 2026)
Assessment year	AY 2026–27
Likely head	Audited business or professional income
Likely ITR	ITR-3 for an individual/HUF business case
Alternative	Complete facts may change the form
Normal deadline	Audit report generally 30 September 2026; ITR generally 31 October 2026
Audit point	The audit report precedes and must reconcile with the return.

The Two-Minute Answer

The correction route depends on the original form, due date, audit status, tax increase, refund effect and whether loss carry-forward is at stake. Rebuild a complete computation rather than adding one isolated line.

This page targets the frequent search intent—which return, which deadline, which schedules and which documents? It does not treat a broker, bank, app or platform label as the legal answer.

Step 1 — Classify the Income

The return form follows the legal head and taxpayer profile. The starting classification is Audited business or professional income and the likely form is ITR-3 for an individual/HUF business case. The final form applies to the taxpayer as a whole: salary, rent, gains, business and other income are combined in one correct return rather than split into separate returns.

Classification should be documented before tax is calculated. Review ownership, intention, contracts, frequency, funding, books, services, foreign status and consistency with earlier years. The same product may be an investment for one person and stock-in-trade for another.

Step 2 — Compute the Taxable Amount

Use transaction-level data wherever lots, dates, fees, refunds, foreign currency or TDS matter. Reconcile gross receipt or sale consideration to platform settlement, bank movement, AIS, Form 26AS and GST. TDS is a credit, not an expense or proof that income was correctly computed.

Step 3 — Apply the Filing Calendar

The normal filing timing is Audit report generally 30 September 2026; ITR generally 31 October 2026. For AY 2026–27, ITR-1 and ITR-2 individual cases remain on the 31 July track; non-audit business or professional cases move to 31 August; ordinary audit cases remain 31 October and transfer-pricing cases 30 November. A belated return is generally available to 31 December 2026, subject to earlier assessment completion, but it does not preserve every loss or procedural right.

Income earned during FY 2025–26 remains governed by the Income-tax Act, 1961. The official transition FAQ confirms that the old forms and proceedings continue for AY 2026–27.

Step 4 — Build the Evidence File

original acknowledgement
corrected computation
source statements
tax challans
audit or verification evidence and new acknowledgement

The file should allow another reviewer to reproduce the number from source statement to ITR schedule. Record the download date because platform reports can later change layout or aggregation.

Worked Indian Example

A taxpayer discovers omitted income after filing. The correct response depends on whether a revised return is open, whether tax must increase and whether loss rights have been affected. A complete replacement return is prepared rather than a one-line patch.

What Viral Posts Usually Miss

The due date follows the return category and audit status, not the product’s marketing name.
TDS is a tax credit, not the final computation.
Net bank settlement is often not gross income, turnover or sale consideration.
A belated return does not preserve every loss, option or procedural right.
The same product can require ITR-2 for an investor and ITR-3 for a business.

Common Mistakes

using rectification for the wrong form
assuming belated filing preserves losses
missing verification or audit acceptance

Finin2min Decision Checklist

Confirm that FY 2025–26 / AY 2026–27 is the correct filing scope.
Identify the legal income head before selecting the ITR.
Reconcile gross figures to bank, AIS, Form 26AS and source statements.
Compute cost, expenses and tax credits separately.
Run audit only where business or professional income exists.
File loss returns by the original due date where carry-forward is required.
Reopen every official source immediately before filing.

Finin2min Q&A

Which ITR should I use for Tax Audit Report by 30 September, ITR by 31 October?

The starting answer is ITR-3 for an individual/HUF business case. The taxpayer’s complete income and exclusions can still change the final form.

What is the AY 2026–27 filing deadline?

The normal deadline is Audit report generally 30 September 2026; ITR generally 31 October 2026. Audit, transfer-pricing, belated or correction facts can change the calendar.

Which income head applies?

The starting classification is Audited business or professional income. Contracts, ownership, records, intention and consistency can alter the result.

Does a small amount still need reporting?

A small amount does not create a general exemption and can make a simplified return ineligible.

Which documents should I preserve?

Preserve original acknowledgement, corrected computation, source statements, tax challans, audit or verification evidence and new acknowledgement. Keep downloaded source files, not only screenshots.

What is the main filing risk?

Key risks are using rectification for the wrong form; assuming belated filing preserves losses; missing verification or audit acceptance. Classify first, reconcile gross figures and then select the form.

Primary Sources

Editorial and Risk Note

This guide is educational and scenario-based. The final return depends on complete facts, residential status, audit position, other income, losses, foreign assets and the law on the filing date. Dynamic deadlines and portal procedures must be rechecked immediately before submission.