Form 26AS vs AIS Mismatch: Complete Resolution Guide for ITR 2026

It is the first week of July 2026, and if you or your clients are filing ITR for AY 2026-27, there is a near-certain chance you have already stared at the Annual Information Statement (AIS) and wondered why the numbers do not match your books. AIS now shows income from 17 different sources — from salary and interest to mutual fund redemptions, crypto transactions, GST turnover, and foreign remittances — and even a small data entry error by a bank or TDS deductor can create a mismatch that triggers a scrutiny notice six months later.

The good news: most AIS mismatches are resolvable before the July 31 deadline for non-audit taxpayers, and even after filing, with the right documentation. This guide walks you through every type of mismatch, explains who is likely wrong (it is not always the taxpayer), and gives you a step-by-step process to reconcile AIS, Form 26AS, and your actual books before you click "File Return."

Form 26AS and AIS — Two Different Windows on Your Tax Data

Many CAs and taxpayers still treat Form 26AS and AIS as interchangeable. They are not — and the confusion between them is itself a source of errors.

Form 26AS (available under the e-File > Income Tax Returns > View Form 26AS path or directly at TRACES) shows:

• TDS deducted and deposited by deductors (employers, banks, buyers)
• TCS collected from you
• Advance tax and self-assessment tax paid
• IT refunds received
• Specified Financial Transactions (SFT) — high-value transactions reported by banks, registrars, and mutual funds

Starting FY 2023-24, the tax department migrated most SFT data to AIS and reduced what appears in Part E of Form 26AS. Today, Form 26AS is primarily your TDS/TCS credit ledger.

AIS (Annual Information Statement) is a comprehensive view of all financial activity reported about you to the Income Tax Department from multiple sources. It includes:

• Salary (from employers via TDS returns)
• Dividend income (from registrar/company)
• Interest income (from banks, NBFCs, post offices)
• Mutual fund transactions (SFT-005)
• Listed securities purchases/sales (SFT-017)
• Unlisted equity and preference shares
• Immovable property transactions (SFT-012/013)
• GST turnover (from GSTN)
• Foreign remittances (from authorised dealers via Form 15CA/CB)
• Rent received (reported by tenants or property registrars)
• Business payments received (aggregated from third-party SFT)

TIS (Taxpayer Information Summary) is the deduplicated, simplified summary of AIS — it removes duplicate data from multiple sources reporting the same income. When your AIS and TIS diverge, the department is still deduplicating or a feedback you submitted is pending.

The 6 Most Common AIS Mismatches for AY 2026-27

1. TDS Credit in Form 26AS vs. AIS vs. Actual

This is the most frustrating mismatch. Your Form 26AS shows ₹45,000 TDS deducted by your bank on FD interest. AIS shows ₹42,000. Your actual TDS certificate shows ₹45,000.

Why does this happen? Banks file their TDS returns quarterly (Form 26Q). If the bank filed a correction after AIS was last updated, AIS reflects the older figure. The TRACES database (which powers Form 26AS) updates within 7 days of a correction; AIS may lag by 2–3 weeks.

Resolution: Use Form 26AS (TRACES) as the definitive TDS credit source. File ITR with the Form 26AS or TDS certificate amount. If AIS is lower, submit AIS feedback noting the correct amount and the reason for the discrepancy.

2. Interest Income Over-reported in AIS

A ₹5,000 interest credit on your savings account appears as ₹8,500 in AIS. The common cause: the bank reported gross interest before TDS, but AIS aggregated data from two sources — the SFT return and the TDS return — showing both instead of netting one out.

Another scenario: a fixed deposit matured and the bank reported both the reinvestment amount and the original principal as "interest paid." For a ₹10 lakh FD yielding ₹80,000 per year, this can make AIS show ₹10,80,000 of income instead of ₹80,000.

Resolution: Download your bank's TDS certificate and account passbook. The TDS certificate is the legal figure. Report actual interest income in your ITR. Submit AIS feedback: "Information is incorrect — actual interest income is ₹[X] as per TDS certificate."

3. Capital Gains Mismatch from Securities

Your broker reports purchase and sale values to BSE/NSE, which flows to AIS as SFT-017. Your broker's tax P&L statement accounts for STT, brokerage, and other charges. The raw AIS figure often shows higher gains than your actual taxable capital gains.

For example: You sold shares worth ₹3.5 lakh (original cost ₹2.8 lakh). Your broker's P&L shows a net gain of ₹65,000 after charges. AIS might show ₹70,000 as reported proceeds without netting those charges, or might omit the cost basis entirely.

Resolution: Always use your broker's capital gains statement (from Zerodha Console, Groww Tax P&L, Angel One Tax Statement, or equivalent) as the source of truth. Report from the broker statement. Submit AIS feedback with the correct cost of acquisition and the broker-certified figures.

4. GST Turnover in AIS vs. Books

GSTN shares aggregate GST turnover data with the Income Tax Department, which appears in AIS under "Business receipts." Your AIS might show ₹68 lakh because your GSTR-1 reported that turnover. But your actual books show ₹61 lakh because:

• ₹4 lakh was export turnover (zero-rated, not chargeable domestic income)
• ₹3 lakh was exempt supply excluded from your P&L

Resolution: Prepare a written reconciliation mapping your GSTR-1 turnover to your ITR income figures. File ITR with actual book income. Keep the reconciliation document for at least 6 years — it is your primary defence against any officer who questions the gap between GST turnover and declared income.

5. Foreign Remittances and LRS Transactions

Authorised dealer banks report Form 15CA/CB remittances to the department. If you sent money abroad under the Liberalised Remittance Scheme (LRS) for education or investment, it appears in AIS as "Foreign remittance." AIS does not distinguish between capital transfers and income payments.

If you remitted ₹25 lakh for your child's foreign university fees, AIS may flag this as a large financial transaction. This is not income — it is a capital payment from your post-tax funds.

Resolution: Submit AIS feedback: "This is a capital remittance for education fees under LRS — not income." Attach the Form 15CA/CB acknowledgment and the university admission or fee receipt as supporting documents.

6. Rent Income Double-Reported

Tenants deducting TDS on rent report the rent paid to you via their TDS returns. Sometimes this gets double-counted — once via the TDS return and once via SFT. If your tenant paid ₹2.4 lakh annual rent and deducted TDS, AIS might show ₹4.8 lakh if both sources independently report the same amount.

Resolution: Compare the rent per your lease agreement and bank credits against the AIS figure. Submit feedback with "Information is duplicate" and attach the signed lease agreement showing actual annual rent.

Reconciling AIS Before You File: A 7-Step Process

Step 1: Download AIS, TIS, and Form 26AS

Log into www.incometax.gov.in. Navigate to e-File > Income Tax Returns > AIS to download both AIS and TIS in PDF and JSON format. Download Form 26AS via the TRACES link. This gives you three data sources to compare side by side.

Step 2: Build a head-wise reconciliation table

Create a table with five columns: Income Head | AIS Value (₹) | Form 26AS (₹) | Books/Documents (₹) | Difference (₹). Fill this for every income type appearing in AIS — salary, interest, dividends, capital gains, business income, rent, and foreign transactions.

Step 3: Classify each difference

Three outcomes are possible: (a) AIS is correct and books need adjustment — correct your ITR entry. (b) AIS is wrong and books or certificates are correct — submit AIS feedback. (c) Timing difference — note which assessment year the income belongs to and report accordingly.

Step 4: Submit AIS feedback for each incorrect item

On the AIS portal, click on the specific income item, then click "Feedback." Choose from: "Information is correct," "Information is not fully correct," "Information is duplicate or included in other information," "Information is denied," or "Information relates to other PAN or year." Write a clear explanation and attach supporting documents where available. Feedback is acknowledged instantly and AIS updates within 3–7 working days. For the July 31 deadline, submit feedback by July 22 to allow time for the correction to reflect.

Step 5: Ask deductors to correct Form 26AS errors

If TDS credit in Form 26AS is wrong — wrong PAN, wrong amount — contact the deductor in writing and request a correction through TRACES (Form 26Q or 27Q amendment). After the deductor files the correction return, TRACES updates Form 26AS within 7 working days.

Step 6: File ITR with actual, correct data — do not wait

Do not hold your filing hostage to AIS corrections. File with actual figures supported by your books and TDS certificates. If AIS shows higher income than you are reporting, document your reason. The Income Tax Act requires your return to be correct — it does not require AIS to agree first.

Step 7: Maintain a written reconciliation document

A one-page AIS-to-ITR reconciliation note — showing each AIS item, your book figure, the difference, and your explanation — is your first line of defence if you receive a 143(1)(a) intimation. Keep it with the tax file for at least 6 years.

The Real Cost of Ignoring AIS Mismatches

Filing without addressing AIS mismatches carries concrete financial consequences:

Section 143(1)(a) intimation: The Centralised Processing Centre (CPC) in Bengaluru automatically adjusts your return upward to match AIS if your reported income is lower and unexplained. You receive a tax demand plus 1% per month interest under Section 234B from the assessment date.

Section 139(9) notice: Returns with significant unexplained income gaps may be declared defective, requiring you to revise and refile within the notice period — adding pressure during an already busy season.

Section 271(1)(c) penalty: If the mismatch is treated as concealment of income, the penalty is 100%–300% of the tax on the under-reported amount. For ₹5 lakh under-reported at a 30% tax rate: ₹1.5 lakh in tax plus up to ₹4.5 lakh in penalties — a total exposure of ₹6 lakh on an error that a 15-minute AIS feedback submission could have prevented.

The AIS feedback mechanism is free, online, and available around the clock. Use it before you file, not after you receive a notice.

Key Takeaways

• Form 26AS (TRACES) remains the authoritative TDS credit ledger. AIS is broader but more error-prone — always verify TDS credits against Form 26AS and your actual TDS certificates, not AIS alone.
• File your ITR with correct, book-supported figures even when AIS shows more. Submit AIS feedback in parallel — do not delay filing while waiting for AIS to update.
• Capital gains from brokers, GST turnover from GSTN, and LRS remittances under Form 15CA/CB are the three highest-risk categories for AIS over-reporting in AY 2026-27.
• Submit AIS feedback by July 22 if you want corrections reflected before the July 31 non-audit deadline. Feedback typically takes 3–7 working days to update.
• A written AIS-to-ITR reconciliation note for every client is the single most protective document a CA can prepare this ITR season — it converts a potential scrutiny case into a routine clarification.

How corpus Helps

corpus automatically reconciles your GST turnover — pulled directly from your GSTR-1 filing data — against your books in real time, so you know before AIS does whether your reported turnover and actual income are aligned. For CA firms managing multiple clients, corpus's multi-client dashboard flags reconciliation gaps across all clients at once: salary TDS, professional fee TDS, interest income, and GST turnover side by side — not buried in separate Tally files or scattered across email threads.

When a client receives a 143(1)(a) intimation for an AIS mismatch, you can pull the reconciliation report from corpus in under two minutes and share it with the assessing officer or use it to draft your response. No scrambling through bank statements forwarded over WhatsApp the night before a hearing.

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