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Form 16 vs AIS TDS Mismatch Checker India Tax Year 2026

Reconcile employer salary TDS from Form 16 Part A against official Annual Information Statement (AIS) and Form 26AS tax credits.

Statutory Rules 2026 Verified Formula Instant Reactive Official Gazette

Quarterly TDS Reconciliation

Tax Credit Reconciliation

Form 16 Part A vs AIS Statement
MISMATCH DETECTED
UNRECONCILED TAX CREDIT SHORTFALL
₹25,000
₹25,000 deducted in Form 16 missing from official AIS credit
Total Form 16 Salary TDS:₹1,20,000
Total Official AIS / 26AS Credit:₹95,000
Reconciliation Status:Variance Detected in Q4
Likely Cause:Q4 24Q return delayed / TAN PAN error
Action Required:Request Employer file Form 24Q Correction

Why Do Form 16 and AIS / Form 26AS Have TDS Mismatches?

When filing an Income Tax Return (ITR), taxpayers often discover a discrepancy between the Tax Deducted at Source (TDS) shown on their employer's Form 16 (Part A) and the tax credits populated in their Annual Information Statement (AIS), Form 26AS, or Form 168 (under Income-tax Act, 2025).

The Most Common Causes of TDS Discrepancies

  1. Quarter 4 Filing Timing Delay: The statutory due date for employers to file the fourth-quarter TDS return (Form 24Q) is May 31st. If an employer files late or makes a last-minute adjustment, the credit may appear on the internal salary slip before reflecting on the TRACES portal.
  2. PAN or Name Discrepancy: If the payroll department entered a typographical error in the employee's PAN, the TDS is deposited into the government treasury under an unmapped PAN, resulting in missing credit.
  3. Incorrect Challan Mapping (BIN Error): The employer paid the TDS challan but failed to quote the correct Book Identification Number (BIN) or Challan Identification Number (CIN) in Form 24Q.

What Happens if You File with an Unresolved Mismatch?

The Centralized Processing Centre (CPC) of the Income Tax Department automatically verifies TDS claims against the AIS database. If an employee claims ₹1,20,000 as TDS while the AIS reflects only ₹95,000:

  • The CPC will disallow the ₹25,000 discrepancy under Section 143(1)(a).
  • A formal tax demand notice will be issued with interest under Section 234B/234C.

Step-by-Step Resolution Steps

  1. Download the consolidated TDS statement (Form 26AS / AIS) from the e-filing portal.
  2. Cross-check quarter-wise TDS figures against Form 16 Part A.
  3. Identify the specific quarter where the shortfall occurs (typically Q4).
  4. Submit a formal rectification request to your employer's finance department requesting a Form 24Q Correction Statement.

Frequently Asked Questions (FAQs)

1. Can an employee claim tax credit if the employer failed to deposit TDS?

Under Section 205 of the Income Tax Act, where tax has been deducted at source, the taxpayer cannot be called upon to pay tax again, even if the employer defaults. However, to clear portal defects, the employer must rectify the Form 24Q filing.

2. How long does a Form 24Q correction take to reflect in AIS?

Once the employer uploads the correction statement on TRACES, it typically reflects in the employee's AIS within 7 to 10 working days.

Statutory Authority: Section 192, Section 205, Section 285BB, Income Tax Act, 1961 and Form 168 rules under Income-tax Act, 2025.