Income Tax Notice for AIS Mismatch? How to Reply – Complete Guide 2026
A few weeks ago a retired government employee messaged me on WhatsApp — he sent a screenshot of the income tax portal and wrote: “Sir, what is this notice? It says AIS mismatch — what do I do?” He had always filed his ITR on time, never missed a deadline, done everything correctly. And yet a notice had arrived.
When I downloaded his AIS, the issue became obvious immediately. An FD had matured during the year — interest of ₹47,000 — which his bank had duly reported to the department. But when his ITR was filed, the interest had not been added to the “Other Sources” section. That was the entire mismatch. We added the income in a revised ITR, paid ₹11,000 in tax and interest, and the matter closed within three weeks. No penalty. No further proceedings.
AIS mismatch notices are one of the most common tax situations I handle today — and in the majority of cases, the solution is exactly as straightforward as this one. The problem is that without knowing the process, even a simple notice can feel overwhelming. This guide tells you exactly what to do, step by step.
What is AIS and Why It Triggers Notices
The Annual Information Statement (AIS) was launched in 2021 as the Income Tax Department’s comprehensive financial tracking system. Over 40 categories of entities — banks, brokers, registrars, credit card companies, insurance companies, crypto exchanges — report your major financial transactions directly to the department. All of this flows into your AIS.
What gets reported in your AIS:
- Bank savings and FD interest — from every bank separately
- High value cash deposits and withdrawals
- Share and mutual fund purchases, sales, and dividends
- Property purchase and sale — from sub-registrar
- Credit card high-value spends
- Foreign remittances — from authorised dealer banks
- GST turnover data — from GSTN
- Rent received — from tenant TDS data
- Crypto and VDA transactions — from exchanges (new from April 2026)
- Insurance premium high-value payments
AIS = Raw data — every transaction exactly as reported, including possible duplicates and errors.
TIS = Taxpayer Information Summary — a processed and consolidated version used for ITR pre-filling.
When the department’s system compares your filed ITR against TIS and finds a gap — that mismatch triggers a notice. Download both before drafting any response.
Why AIS Mismatches Happen — 9 Common Causes
| Transaction | Common Mismatch Reason | Risk Level |
|---|---|---|
| FD / Savings Interest | Not declared in Other Sources | Moderate — tax + interest |
| High value cash deposit | Source not explained in ITR | High — unexplained income |
| Shares / MF capital gain | STCG or LTCG not reported | High — capital gains tax demand |
| Property transaction | Sale value or stamp duty mismatch | High — potential Section 148 reopening |
| Dividend income | Not added to Other Sources | Moderate |
| Rent received | Tenant deducted TDS but income not declared | Moderate to High |
| Foreign remittance | Treated as income without explanation | High |
| Credit card high spend | Lifestyle vs declared income mismatch | Moderate |
| GST turnover vs ITR income | Business income understated in ITR | High — scrutiny trigger |
Notice Types — Which Section, What It Means
| Section | What It Means | Deadline | Stage |
|---|---|---|---|
| 139(9) | ITR is defective — missing or inconsistent information | 15 days | Filing stage |
| 143(1) | Intimation — CPC automatic adjustment — demand or reduced refund | 30 days (if disputing) | Processing |
| 143(2) | Scrutiny — detailed examination of return selected | 30 days | Assessment |
| 142(1) | Information requested — file return or submit documents | As specified | Assessment |
| 148A | Show cause — income may have escaped assessment | 7–30 days | Reassessment |
| 148 | Reassessment notice — prior year income reopened | As specified | Reassessment |
Step-by-Step Reply Process — 8 Steps
-
1Download and Read the Notice Carefully
Login to incometax.gov.in → e-Proceedings → locate and download your notice. Note: the section number, the Assessment Year it covers, the exact mismatch amount mentioned, the response deadline, and the notice reference number. Write these down before doing anything else. -
2Download Both AIS and TIS
incometax.gov.in → AIS tab → download both the Annual Information Statement and the Taxpayer Information Summary as PDFs. Locate the specific transaction mentioned in the notice — which entity reported it, what amount, which financial year. -
3Compare Against Your Filed ITR
Open the ITR for the relevant AY. Check line by line — where should the AIS transaction have appeared? FD interest → Schedule OS (Other Sources). Capital gains → Schedule CG. Rent → Schedule HP. Business income → Schedule BP. This comparison pinpoints exactly where the gap is. -
4Decide — Agree or Disagree
Two paths:
A) AIS data is correct and you missed it: File a revised ITR adding the missing income, pay tax and interest, and submit your response citing the revised ITR.
B) AIS data is wrong or you already declared it correctly: Prepare proof — where in your ITR was it declared, or why the AIS entry is incorrect — and respond with documentation. -
5Collect Documents
Gather what you need based on the transaction type. See the Documents Checklist section below — specific to each income category. -
6If Income Was Missed — Pay Tax and File Revised ITR
Add the missing income to your ITR → calculate tax → calculate Section 234B/234C interest → deposit Self-Assessment Tax via Challan 280 at the income tax portal → then file the revised ITR including the challan details. Revised ITR can be filed until December 31 of the Assessment Year. -
7Submit Online Reply via e-Proceedings
incometax.gov.in → e-Proceedings → open your notice → “Submit Response” → write a clear, point-by-point reply → attach relevant documents as PDF → submit → save the acknowledgement number. This number is proof of your timely response. -
8Follow Up After 15–20 Days
Check e-Proceedings for case status. If the department requests further information or schedules a hearing — respond immediately. Many cases close after a complete, well-documented response.
Real Cases — How Different Situations Were Handled
Case 1 — Section 143(1) — FD Interest Missed — ₹11,000 Tax + Interest
Ramesh (retired, Delhi) always filed his ITR on time. In FY 2023-24, an SBI FD matured — ₹47,000 interest. His CA missed adding it to the Other Sources schedule. In March 2025, a 143(1) intimation arrived with a ₹14,000 demand (₹11,000 tax + ₹3,000 interest).
What we did: Obtained the bank interest certificate. Deposited ₹14,000 via Challan 280. Filed a revised ITR adding the FD interest. Submitted e-Proceedings response with the challan copy and bank certificate attached.
Result: Case closed in three weeks. No Section 270A penalty because the revised ITR was filed proactively.
Case 2 — Section 143(2) Scrutiny — Property Sale Mismatch — ₹28 Lakh Demand
Sunita (Mumbai) sold a property in FY 2022-23 for ₹85 lakh. The sub-registrar reported the full ₹85 lakh in AIS. Sunita had declared a capital gain of ₹12 lakh in her ITR (after indexed cost deduction). Department issued a 143(2) scrutiny notice — showing a ₹73 lakh mismatch.
What we submitted: Original purchase deed (2005), indexed cost calculation worksheet, capital gain working with full cost base, Section 54 exemption proof (new house purchased), and bank statement showing sale proceeds.
Result: AO accepted the capital gain calculation. Final demand: zero.
The lesson here is that a large AIS number does not automatically mean a large tax demand. The capital gain is calculated on the net gain — not the gross sale proceeds. A well-documented response makes this clear.
Case 3 — Section 148A — Time-Barred Reassessment
A client received a 148A notice in March 2026 for AY 2020-21 — alleging rental income had been underreported. The 3-year limitation period for escaped income below ₹50 lakh had ended on March 31, 2024. The notice arrived two years too late.
We filed a detailed limitation objection in the 148A response — citing the specific time limits under the Finance Act 2021 amendments. The AO dropped the proceedings without escalating to a 148 notice.
Knowing the time limits saved the client from a disruptive reassessment — even though the underlying income question may have had merit.
🔗 Income Tax Notice Complete Guide — All Types Explained
AIS Feedback — When the AIS Itself Is Wrong
Sometimes the AIS entry is genuinely incorrect — a bank reported someone else’s transaction against your PAN, or a figure is duplicated, or the wrong financial year is shown. In this case, submit AIS feedback:
incometax.gov.in → AIS section → click on the specific transaction → “Submit Feedback” → choose the appropriate option:
- “Information is correct” — if you agree
- “Information is not fully correct” — amount is wrong
- “Information relates to other PAN” — belongs to someone else
- “Information is duplicate” — same entry appearing twice
- “Information is denied” — transaction did not occur at all
Documents Checklist — By Income Type
| Income Type | Documents Required | ITR Schedule |
|---|---|---|
| Bank FD / Savings Interest | Form 16A or interest certificate, bank statement | Schedule OS |
| Listed shares capital gain | Broker P&L statement, contract notes, demat statement | Schedule CG — STCG/LTCG |
| Mutual fund capital gain | AMC account statement, redemption confirmation | Schedule CG |
| Property sale | Sale deed, purchase deed, improvement bills, bank statement | Schedule CG |
| Dividend income | Demat statement, dividend credit entries in bank | Schedule OS |
| Rent received | Rent agreement, bank credits, tenant TDS certificate (Form 16A) | Schedule HP |
| Business income | Books of accounts, GST returns, bank statements, P&L | Schedule BP / PGBP |
| Foreign income | Foreign bank statement, remittance advice, source documents | Schedule FSI + TR |
| Cash deposit explained | Cash book, sales register, business receipts, gift/loan documentation | As applicable |
Tax, Interest, and Penalty — What Applies
| Provision | Rate | When It Applies |
|---|---|---|
| Section 234A | 1% per month | ITR filed late — from July 31 to actual filing date |
| Section 234B | 1% per month | Advance tax paid less than 90% of assessed tax |
| Section 234C | 1% per month | Shortfall in advance tax installments |
| Section 270A — Under-reporting | 50% of tax on under-reported income | Income not declared — notice route |
| Section 270A — Mis-reporting | 200% of tax on mis-reported income | Deliberate fraud or false claims |
Common Mistakes — Expensive If You Make Them
Confusing AIS feedback with notice reply:
Both are necessary when the AIS data is wrong. AIS feedback goes under the AIS section. Notice reply goes under e-Proceedings. Submitting one does not substitute for the other — do both, separately.
Filing revised ITR without paying tax first:
The sequence matters. Pay the tax and interest via Challan 280 first — get the challan BSR code and serial number — then file the revised ITR with those challan details filled in. Filing the revised ITR before paying the tax creates an inconsistency the system flags immediately.
Missing the 30-day deadline entirely:
If deadline is tomorrow and you are not ready — submit a partial response today with whatever documents you have. Write that a complete response will follow within 7 days. An incomplete but timely response is infinitely better than a missed deadline that triggers ex-parte proceedings.
Reporting joint account interest in both partners’ ITRs:
Interest on a joint FD should be declared by the primary account holder only — not both. If both have been declaring it, one ITR has an error. Correct the non-primary holder’s ITR and submit AIS feedback explaining the joint account structure.
Assuming the CA handles the notice automatically:
Your CA prepares your return, but you are the taxpayer — the legal liability is yours. Verify that your CA has submitted the e-Proceedings response before the deadline. Ask for the acknowledgement number as proof. Do not assume the notice is handled without confirming it.
Five Habits That Prevent AIS Mismatch Notices
- Download and review AIS before filing every ITR — whatever appears in AIS should appear in your ITR. This single habit eliminates 90% of mismatch notices.
- Collect interest certificates from every bank in April/May — before your CA session. Do not rely on memory for FD interest amounts across multiple banks.
- Track capital gains in real time — when you sell shares or redeem an MF, record the gain immediately. Do not reconstruct it eight months later from memory.
- Request FD interest certificates at maturity — banks do not always send them automatically. Ask proactively.
- Check AIS in October after July filing — new entries sometimes appear after you file. If something was missed, December 31 is still the revised ITR deadline. Use it.
Frequently Asked Questions
Q1. My AIS shows ₹2.8 lakh in dividend but I only received ₹1.9 lakh. What do I do?
Companies sometimes pay interim and final dividends in the same year — both appear in AIS. There may also be a duplicate entry. Download your demat statement and verify every dividend credit. Declare what was genuinely received. For the discrepancy, submit AIS feedback with “Information is not fully correct” and attach your demat statement showing the actual amounts received.
Q2. My wife’s FD interest is showing in my AIS — we are joint account holders.
Joint FD interest is generally reported against the primary account holder’s PAN. If you are not the primary holder, submit AIS feedback explaining the joint account structure and who the primary holder is. Attach the FD account statement. The primary holder declares the interest in their ITR.
Q3. My 143(1) shows a demand of ₹8,500. Do I need a CA or can I handle it myself?
For a straightforward demand of this size — typically from missed FD interest or dividend — you can handle it yourself. Identify the missing income, pay tax and interest via Challan 280, file a revised ITR, and submit your e-Proceedings response with the challan and supporting document. Engage a CA when the amount is significant, the mismatch is complex, or the notice section is 143(2) or above.
Q4. My deadline is tomorrow and I am not ready. What do I do right now?
Log into e-Proceedings immediately and submit whatever partial response you can — attach any documents you have available. In the response text, write that complete documentation will be submitted within 7 days and request an extension. Also check if the portal has a “Request for Extension” option under the notice — use it if available. A timely partial response with a clear explanation is always better than a missed deadline.
Q5. My CA made the error in my ITR. Who is legally responsible?
You are — as the taxpayer. The Income Tax Act places the legal obligation on the assessee, not the tax preparer. Your CA may have professional negligence liability that you can pursue separately, but for the purposes of responding to the notice, you are the responsible party. Address the notice response first, close the matter, then deal with the CA issue separately if necessary.
Conclusion
An AIS mismatch notice is not a sign that the department is after you. In the majority of cases I handle — Ramesh’s forgotten FD interest, Sunita’s property sale gross vs net confusion — the situation is straightforward and the resolution takes a few weeks. What makes it complicated is not the underlying tax issue but the procedural unfamiliarity: knowing which portal section to use, which documents to attach, whether to file a revised ITR first or respond first, and how to distinguish AIS feedback from a notice reply.
The framework is clear once you understand it. Act within 30 days. Compare AIS against your ITR to locate the gap. Pay what is genuinely owed. Document what was correctly declared. Submit a complete, evidence-backed response via e-Proceedings. And from next year — check your AIS before you file, not after.
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