Tax department warns of defective returns over TDS mismatches and correction deadlines

Taxpayers face possible return rejection over mismatched TDS credits; experts advise early correction within a 15-day window following defect notices issued under Section 139(9).

A mismatch in tax deducted at source, or TDS, can be enough for the Income Tax Department to treat a return as defective, according to guidance on Section 139(9) of the Income Tax Act and the tax-filing materials reviewed. The issue usually arises when the credit claimed in a taxpayer’s return does not align with the department’s records, a problem that can also stem from missing income details, the wrong return form, or incomplete schedules and supporting documents.

Under Section 139(9), a return may be flagged as defective if it is incomplete, inconsistent or fails to meet the form’s requirements. The law gives taxpayers a chance to correct the problem after a notice is issued, and the defect notice is typically sent to the registered e-mail address or made visible through the e-filing portal. The notice should identify the mismatch or omission and explain what needs to be fixed.

Taxpayers are generally allowed 15 days to respond, unless the notice specifies a different deadline. Tax experts cited in the related guidance say this is an important window because failure to act can have serious consequences: the return may be treated as invalid, with knock-on effects for refunds, carry-forward losses and other filing-related benefits.

The safest approach is to compare the return with Form 26AS, the annual information statement and other tax records before submitting it, especially where TDS credit is involved. If the department spots an error, the correction can usually be filed through the income tax e-filing portal, but the response must be complete and within the permitted time.