Tax authorities have issued an advisory urging all income tax filers to check and renew their expired or expiring Digital Signature Certificates (DSCs) ahead of the upcoming filing deadlines. Since DSCs are mandatory for certain categories of taxpayers, including companies and audit cases, outdated certificates can lead to filing errors and submission failures.

The advisory highlights that many taxpayers unknowingly attempt to file returns using inactive digital signatures, resulting in delays and non-compliance notices. To avoid such disruptions, filers are encouraged to verify the validity period of their DSCs and complete the renewal process well in advance.

Officials have emphasized the importance of using a valid and active DSC for seamless e-filing and secure verification. With the income tax portal fully integrated with DSC functionality, keeping digital credentials up to date is now an essential part of compliance management for both individuals and businesses.