Income Tax Return Filing 2026: 8 ITR Mistakes That AI Systems Can Easily Flag

The Income Tax Return (ITR) filing season for Assessment Year 2026-27 is underway, and tax experts are warning taxpayers to be extra careful while submitting their returns.

The reason is simple: the Income Tax Department is increasingly relying on artificial intelligence (AI), advanced data analytics, and automated verification systems to identify discrepancies in tax returns. These systems can compare information submitted by taxpayers with data received from employers, banks, mutual funds, stock brokers, property registrars, and other financial institutions.

As a result, even minor mismatches can lead to refund delays, scrutiny notices, or requests for clarification.

How AI Is Changing Tax Compliance

The Income Tax Department has significantly expanded its use of technology in recent years.

AI-powered systems can automatically cross-check income details, investments, tax deductions, capital gains, and financial transactions against information available through Form 26AS, the Annual Information Statement (AIS), Taxpayer Information Summary (TIS), and reports submitted by financial institutions.

This allows authorities to identify inconsistencies more quickly and accurately than traditional manual reviews.

1. Mismatch Between Form 16 and ITR

One of the most common mistakes involves reporting income figures that do not match Form 16 issued by employers.

Taxpayers should carefully verify salary details, tax deducted at source (TDS), and allowances before filing returns. Any discrepancy can immediately attract attention during automated verification.

2. Ignoring Income Reported in AIS

Many taxpayers focus only on Form 16 and overlook information available in the Annual Information Statement.

The AIS may contain details related to interest income, stock transactions, mutual fund investments, dividend income, and other financial activities. Failure to report these earnings can create mismatches in the system.

3. Incorrect TDS Claims

Claiming TDS amounts that differ from official records can trigger scrutiny.

Taxpayers should cross-check TDS credits with Form 26AS and AIS before filing returns to ensure that all claimed credits are supported by available records.

4. Not Reporting Interest Income

Interest earned from savings accounts, fixed deposits, recurring deposits, and other investments remains taxable under applicable rules.

Many individuals unintentionally omit such income, leading to discrepancies when banks report the information to tax authorities.

5. Wrong Deduction Claims

Claiming deductions without proper documentation or exceeding eligible limits can create problems during assessment.

Deductions under various sections should be supported by valid investment proofs and comply with current tax regulations.

6. Forgetting Capital Gains

Capital gains from shares, mutual funds, property sales, or other investments are increasingly tracked through automated systems.

Failure to report gains accurately can result in notices or reassessment requests, especially as investment platforms share transaction data with tax authorities.

7. Selecting the Wrong ITR Form

Choosing an incorrect ITR form remains a common filing mistake.

Different categories of taxpayers are required to use specific forms based on income sources, business activities, and investment profiles. Filing through the wrong form may lead to processing issues and delays.

8. Bank Account and Personal Information Errors

Simple mistakes in bank account details, PAN information, Aadhaar records, or contact details can create unnecessary complications.

Incorrect information may delay refunds and generate additional verification requirements during return processing.

Why Accuracy Matters More Than Ever

With AI-powered compliance systems becoming increasingly sophisticated, tax filing errors are now easier to detect.

Experts recommend reviewing all financial documents carefully before submission and cross-verifying details with Form 16, AIS, TIS, and Form 26AS. Maintaining proper records and ensuring complete disclosure can help taxpayers avoid notices and ensure faster refund processing.

Tips for Smooth ITR Filing

Before submitting your return, experts recommend:

• Verify salary and TDS details.
• Review AIS and Form 26AS thoroughly.
• Report all income sources.
• Disclose capital gains accurately.
• Check deduction eligibility.
• Select the correct ITR form.
• Confirm bank account details.
• Retain supporting documents for future reference.

As the Income Tax Department continues to strengthen its use of artificial intelligence and analytics, accurate and transparent filing has become more important than ever. Taxpayers who carefully review their returns before submission can significantly reduce the risk of notices, delays, and compliance issues.