Common ITR Filing Mistakes That Can Lead to Tax Notices
Every filing season, a large number of taxpayers submit their income tax return believing they've done everything correctly, only to receive a defective return notice, a demand letter, or an unexplained refund delay weeks later — and almost none of it comes from deliberate wrongdoing. For AY 2026-27 (FY 2025-26), the margin for error has genuinely narrowed: the Income Tax Department now cross-checks your return against the Annual Information Statement (AIS), Form 26AS and the Taxpayer Information Summary (TIS) using AI-driven data analytics, which means even a small, honest omission gets flagged the same way a larger one would. A ₹50 dividend missing from your return can trigger the exact same automated mismatch notice as a much bigger gap.
This year's filing season also carries a few genuinely new wrinkles worth knowing about specifically. The new tax regime is now the default option, the standard deduction has been revised, and reporting requirements around crypto and Virtual Digital Assets (VDA), foreign assets under Schedule FA, and Section 87A rebate eligibility have all been tightened compared to previous years. Several of the mistakes that used to go unnoticed simply don't anymore, because the systems checking your return have gotten better at spotting them — which is exactly why understanding what's changed for AY 2026-27 matters more this year than in a typical one.
At Sharda Associates, our CA team files and reviews individual and business returns every season, and the mistakes that lead to notices are almost always the same handful, repeated year after year — not because taxpayers are careless, but because these errors are genuinely easy to miss without a professional second look. This guide walks through exactly what those mistakes are for this filing season, why they trigger notices, and how to avoid them.
1. Selecting the Wrong ITR Form
Salaried individuals with income below ₹50 lakh and no capital gains generally file ITR-1, while anyone with capital gains, business income, or multiple property income needs ITR-2, ITR-3, or ITR-4 depending on their specific situation. Filing under the wrong form is one of the most common triggers for a defective return notice under Section 139(9), along with processing delays.
2. Not Reconciling Your Return with AIS and Form 26AS
This is, by most accounts, the single biggest trigger for income tax notices today. The department already holds a complete record of your salary, FD interest, dividends, mutual fund redemptions and property transactions, all linked to your PAN through AIS. Any mismatch between what you declare and what AIS/Form 26AS shows can result in lower refunds, additional tax demand, or a direct notice — reconciling these figures before submission is no longer optional.
3. Entering the Wrong Assessment Year
Income earned between April 2025 and March 2026 falls under FY 2025-26, with the corresponding return filed under AY 2026-27. Entering the wrong assessment year — a common last-minute filing error — can create confusion in your tax records and, in some cases, result in duplicate tax demands.
4. Omitting Crypto/VDA Income
Virtual Digital Asset transactions now have dedicated reporting in AIS pulled directly from exchange data, making omitted crypto income one of the most frequently cited new mistakes for this filing season specifically. Even informal or occasional trading needs to be reported.
5. Forgetting to Disclose Exempt Income
Agricultural income, PPF interest, insurance maturity proceeds under Section 10(10D), and long-term capital gains below the exemption threshold aren't taxable — but all of them still need to be declared in the relevant schedule. Skipping this disclosure is a well-documented audit trigger, even though no additional tax is actually owed on it.
6. Misapplying the Section 87A Rebate on Special Rate Income
This is a newer and increasingly common mistake: the 87A rebate applies only to income taxed at slab rates, not to short-term capital gains under Section 111A or long-term capital gains under Section 112A. Some tax software incorrectly nets the rebate against this special-rate income, which the CPC later corrects — often with a demand notice attached.
7. Incorrect Bank Account or Personal Details
Your name, PAN details, and bank account number/IFSC code need to match your official records exactly. A mismatch — common among those who've recently switched banks — can delay refunds or flag the return for manual verification.
8. Ignoring Foreign Assets in Schedule FA
Anyone holding foreign bank accounts, shares, or other overseas assets is required to disclose them under Schedule FA, regardless of the amount involved. This requirement is being enforced more strictly for AY 2026-27, and non-disclosure here can trigger scrutiny under stricter timelines than a typical income mismatch.
9. Missing E-Verification Within 30 Days
An ITR isn't considered filed until it's e-verified — via Aadhaar OTP, net banking, or a signed physical ITR-V sent to CPC Bengaluru — within 30 days of submission. Missing this window means your return is treated as not filed at all, regardless of how accurately it was prepared.
What Happens If You've Already Made One of These Mistakes
If you spot an error after filing, you can file a revised return any number of times before the deadline — generally December 31, 2026 for AY 2026-27, or before assessment is completed, whichever comes first — with no penalty for the revision itself. If you miss even that window, an The updated return (ITR-U) under Section 139(8A) is still available, though it comes with an additional 25–50% of the incremental tax and interest payable, so acting sooner rather than later matters.
Quick Reference: Mistake vs. Consequence
Conclusion
Almost every notice we see traces back to one of the mistakes above — not carelessness, just something genuinely easy to overlook when you're reconciling AIS, Form 26AS, and your own records under a deadline.
If you'd rather have someone check your return before the department does, our CA team at Sharda Associates reviews and files returns exactly with this in mind, catching the mismatches and misapplied rebates before they turn into a notice. Reach out to us directly at Sharda Associates +91 89899 77769. We're happy to take a quick look at your return before you file.
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Frequently Asked Questions
1. What is the ITR filing deadline for AY 2026-27?
July 31, 2026 for individuals filing ITR-1 and ITR-2, and August 31, 2026 for those filing ITR-3 and ITR-4, based on the current schedule for this assessment year.
2. Can I fix a mistake after I've already filed my return?
Yes — a revised return can generally be filed until December 31, 2026, for AY 2026-27, or before assessment is completed, with no limit on the number of revisions within that window.
3. What if I miss the revised return deadline entirely?
You can still file an Updated Return (ITR-U) under Section 139(8A), though this carries an additional 25–50% of the incremental tax and interest due.
4. Do I need to report crypto income even if it's a small amount?
Yes — VDA transactions are reported to the department directly through exchange data via AIS, so even modest crypto activity should be disclosed.
5. Why does a mismatch with AIS matter so much this year?
The department's cross-checking has become more automated and comprehensive, so even minor mismatches that might have gone unnoticed in past years are now flagged consistently.
6. Is exempt income really worth declaring if no tax is owed on it?
Yes — omitting exempt income like PPF interest or agricultural income is a documented trigger for scrutiny, even though it doesn't add to your tax liability.
7. What happens if I forget to e-verify my return?
Your return is treated as not filed at all until e-verification is completed within 30 days, regardless of how accurate the filing itself was.
8. Does the Section 87A rebate apply to capital gains?
No — it applies only to income taxed at slab rates, not to capital gains taxed at special rates under Sections 111A or 112A; misapplying it is a common cause of demand notices this year.
9. Is Schedule FA disclosure mandatory even for small foreign holdings?
Yes — foreign asset disclosure under Schedule FA is required regardless of the amount, and this is being enforced more strictly for AY 2026-27.
10. Can a CA help even if I've already received a notice?
Yes — a CA can review the specific notice, identify the underlying mismatch or error, and help file the appropriate response or revised return.
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