A tax credit mismatch occurs when the TDS, TCS, or tax payments claimed in your ITR don't match the figures recorded against your PAN in Form 26AS. According to the Income Tax Department's Tax Credit Mismatch service, these discrepancies can arise from filing dates, deductor reporting cycles, and differences between Form 26AS and the Annual Information Statement (AIS). The comparison covers four categories: Tax Deducted at Source (TDS), Tax Collected at Source (TCS), advance tax paid in instalments, and self-assessment tax paid before filing the return.
The Income Tax e-Filing Portal provides a dedicated service to identify tax credit mismatches within a few clicks. As reported by the Income Tax Department, taxpayers can log in, select Tax Credit Mismatch, enter their PAN and assessment year, and receive a line-by-line comparison between ITR claims and Form 268 records. A clean result shows 'Tax Credit Claimed is Fully Matched with Tax Credit Available in 26AS,' while any divergence appears as a mismatch record that can be downloaded in PDF or Excel format. The portal also recommends checking the Annual Information Statement (AIS) and Taxpayer Information Summary (TIS) for comprehensive reconciliation.
According to tax professionals, five situations produce most tax credit mismatches: filing before Form 26AS is complete (waiting past May 31st for Q4 TDS entries), PAN errors at the deductor's end, TDS deducted but not deposited, timing differences between income taxation and TDS deduction years, and AIS and Form 26AS showing different income data. For mismatches without intimation, taxpayers can file a revised return under Section 139(5), while those with intimation should file a rectification request under Section 154. For timing issues, Form 102 may be required to pull TDS credit back to the earlier year where income was already declared.
Ignoring flagged mismatches carries significant consequences according to the Income Tax Department. As reported, the refund gets recomputed on the lower, matched figure alone, and any TDS left unreconciled is lost permanently rather than merely delayed. A demand notice for the shortfall can follow, and unresolved demands are set off automatically against future refunds under Section 245. Additionally, refund interest under Section 244A stops accruing on the disputed amount until the mismatch is cleared, with each month of delay adding to the cost.
Prevention through proper preparation before filing eliminates most mismatches, as reported by tax experts. Key strategies include waiting until after May 31st to download Form 26AS, matching every line between Form 130/131 and Form 26AS, cross-reading AIS and Form 26AS for comprehensive coverage, confirming PAN accuracy with every deductor, and reporting every AIS income entry in the ITR. The Income Tax Act 2025, effective from April 1st, 2026, has renamed several forms with Form 26AS becoming Form 168, Form 16 becoming Form 130, and Form 71 becoming Form 102, while returns for Tax Year 2026-27 still use familiar names under the Income Tax Act 1961. Recent developments show that the CBDT has identified additional reasons for TDS mismatches including invalid TAN of deductor, furnishing same TAN for multiple deductors, and incorrect filing of TDS schedules in return forms.
