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Income Tax· Updated Jul 2026· 6 min read· By CA Sumit Chandwani· AY 2026-27

AIS and Form 26AS Mismatch: Fix It Before It Triggers a Notice

Today's assessments are AIS-driven, not just TDS-driven. If your return does not match what AIS and Form 26AS say, the portal's automated system flags it, and a notice or refund delay usually follows. Here is how to reconcile all three.

What's in this guide
  1. Why this matters now
  2. AIS vs Form 26AS vs TIS
  3. The three-way check
  4. Using AIS feedback
  5. Get it reconciled

The single most common reason for a Section 143(1) demand, a delayed refund, or a defective-return notice is a mismatch between your ITR and the department's own records. Those records now come primarily from the Annual Information Statement (AIS), not just Form 26AS. Reconciling them before you file is the highest-return thing you can do.

Why this matters more than ever

The e-filing portal auto-processes returns and has no tolerance for mismatches. If your broker reports a capital gain, your bank reports FD interest, or a company reports a dividend, and your ITR does not include it, the system adds it under Section 143(1) and raises a demand. The old habit of checking only Form 26AS leaves a large blind spot, because 26AS shows mainly TDS, while AIS shows income from dozens of sources.

AIS vs Form 26AS vs TIS, in plain terms

Form 26AS is the authoritative record of TDS, TCS and advance tax, use it to verify your tax credits. AIS is a much broader statement aggregating income from many sources (interest, dividends, capital gains, and more), use it to check your income is complete. TIS is a category-wise summary of AIS, and it is what the "pre-fill" button pulls into your ITR. If TIS is wrong, your pre-filled return is wrong.

The three-way check before you file

Download Form 26AS (from the portal or TRACES) and AIS/TIS (from the portal). Match your Form 16 TDS to Form 26AS quarter by quarter, then compare every income category in TIS against your own records, salary slips, bank interest certificates, broker and mutual fund statements. The most commonly missed entry in salaried returns is savings-bank and FD interest, which the bank reports to AIS whether or not you remember it.

Using the AIS feedback tool

If AIS shows something wrong, for example income that is not yours because your PAN was misquoted, or a gross figure where only net is taxable, do not just ignore it. Use the AIS feedback facility on the portal to mark the entry (for example, "information relates to other person or year") and give the correct position. Corrections can take time to reflect, so if the deadline is near, file with the correct figures supported by your documents and keep proof of the feedback you submitted.

Get your reconciliation done right

A clean three-way reconciliation is a few hours of careful work that prevents the most common notices and refund delays. If you would rather have a CA do it and file a return that matches the department's records, our Income Tax & ITR filing service includes this reconciliation as standard. Get a free consultation.

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Frequently asked questions

When is a tax audit mandatory under Section 44AB?
For a business, when turnover exceeds ₹1 crore, or ₹10 crore if cash transactions stay under 5% of both receipts and payments. For a professional, when gross receipts exceed ₹50 lakh. It is also mandatory if you opt out of a presumptive scheme like 44AD or 44ADA and declare profits below the presumptive rate while your income exceeds the basic exemption limit.

Frequently asked questions

What is the difference between AIS and Form 26AS?
Form 26AS is the authoritative record of TDS, TCS and advance tax credits. AIS is a broader statement aggregating income from many sources such as interest, dividends and capital gains. You should reconcile both before filing.
Why did I get a notice even though Form 26AS matched my return?
Because assessments are now AIS-driven. Form 26AS mainly shows TDS, while AIS captures income from many sources. If your return omits income that appears in AIS, the system can raise an adjustment under Section 143(1).
How do I correct a wrong entry in AIS?
Use the AIS feedback facility on the e-filing portal to flag the entry, for example as belonging to another person or year, and provide the correct information. Keep proof of the feedback you submit.
What if the AIS correction is not processed before the deadline?
File your ITR with the correct figures supported by your own documents, and retain proof of the AIS feedback submission in case a notice follows.

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