The tax audit report due date for AY 2026-27 is 30 September 2026 — a Wednesday, and six days from now. If your business or profession is covered by section 44AB, this is the date by which the audit report has to be both filed by your chartered accountant and accepted by you. It is not the date your income-tax return is due; it is the report that has to exist before that return can be filed cleanly, and the two are one month apart by design.
What the tax audit report due date for AY 2026-27 actually requires
A tax audit is not something you file. It is something your chartered accountant files and you then approve. The Income Tax Department’s own guidance is explicit: the chartered accountant must electronically file the audit report to the department, and the taxpayer must then approve the report through their e-filing account. Two actions, two people, one deadline — and the second one is the step that trips businesses up every year.
The report itself is a set of forms. Form 3CA (where accounts are already audited under another law, such as the Companies Act) or Form 3CB (where they are not) is the auditor’s report, and Form 3CD is the long statement of particulars attached to it. Your CA uploads them; the forms then sit in your e-filing account waiting for your acceptance. An audit report that has been uploaded but not accepted by 30 September is not a filed report. If the acceptance step is skipped — because it landed in an inbox nobody watches, or because everyone assumed the CA’s upload was the end of it — the audit is late even though the work was done on time.
Who has to get a tax audit done
Section 44AB sets the thresholds. A business needs a tax audit if its total sales, turnover or gross receipts exceed one crore rupees in the year — raised to ten crore rupees where cash receipts and cash payments each stay within five per cent of the total. A profession crosses the line at gross receipts of fifty lakh rupees. There are further cases — for example, where someone who could have declared income on a presumptive basis instead shows lower profits and has income above the exemption limit — but the turnover and receipts tests are what catch most businesses. If you were audited last year and your scale has not shrunk, assume you are in again this year.
The test applies to the entity, not the entity type. A private limited company, an LLP, a partnership firm and a sole proprietor are all caught the moment they cross the relevant figure, and the ten-crore relief is only available where the business is genuinely running on non-cash receipts and payments — it is not a blanket higher limit. The safest reading is to check your figure for the year against the one-crore and fifty-lakh lines early, not on the last weekend of September.
Why 30 September gates your 31 October return
Section 44AB ties the report to a “specified date”, defined as the date one month prior to the due date for furnishing the return of income under section 139(1). For assessees who require a tax audit, that return is due on 31 October 2026. Count back one month and you land on 30 September — which is exactly why the report date and the return date are never the same day.
The report is the gate; the return is the room behind it. If the report is not filed and accepted by 30 September, the 31 October return that relies on its figures does not have a clean foundation to stand on.
In practice this means the last week of September is not spare time before the return — it is the deadline. Books have to be closed, the 3CD particulars have to be finalised, the report has to be uploaded, and you have to log in and accept it. Only then does the runway to 31 October actually open.
Don’t build your plan around an extension
Last year the Central Board of Direct Taxes did extend the audit-report timelines for AY 2025-26 through a circular. It is a fair bet that a chorus of representations is asking for the same again this year — and they may well succeed. But last year’s relief was a one-off decision for a different year, and as of 24 September 2026 no extension has been notified for AY 2026-27. The date written into the statute is 30 September. Treat it as the real one and work to it; an extension, if it arrives, is a windfall you can absorb, not a plan you can bank on. Firms that spend the last week waiting for a notification are the ones filing at midnight if it never comes.
What missing it costs
Failing to get the accounts audited or to furnish the report by the specified date attracts a penalty under section 271B — one-half per cent of total sales, turnover or gross receipts, or one hundred and fifty thousand rupees, whichever is less. On a business turning over a few crore, the half-per-cent side of that bites well before the cap does. But the penalty is often not the worst of it. The bigger cost is operational: an audit that runs late drags the return late behind it, and a late return carries its own interest and forfeits conveniences a timely filing would have kept. The cheapest version of this deadline is the one you meet.
If your books are not yet audit-ready with six days on the clock, the risk is not the paperwork — it is the closing. That is the part worth handing to people who do it every September.