CAT 2026: Key Rules for NC-OBC and EWS Certificate Validity

The Indian Institutes of Management (IIMs), which jointly conduct the Common Admission Test (CAT), have laid down specific eligibility conditions regarding category certificates for Non-Creamy Layer Other Backward Class (NC-OBC) and Economically Weaker Section (EWS) candidates. Aspirants planning to appear for CAT 2026 must ensure their certificates meet the prescribed validity norms to avoid disqualification at the time of admission.

NC-OBC Certificate: What You Must Check

Candidates seeking reservation under the NC-OBC category are required to submit a valid Non-Creamy Layer certificate issued by a competent authority. The IIMs typically require that the NC-OBC certificate be issued on or after a specific cut-off date that falls close to the CAT registration window. Candidates who hold an expired or backdated certificate risk losing their reserved-category status during the IIM admission process, even if they qualify in CAT.

• The certificate must be issued by a designated competent authority such as a Sub-Divisional Magistrate or equivalent officer.
• The caste must appear in the Central List of OBCs maintained by the Government of India — state OBC lists alone are not sufficient for IIM admissions.
• Candidates must verify that their caste is listed under the Central OBC list, not merely the state list, as IIMs follow central government norms.

EWS Certificate: Validity and Format

For EWS candidates, the Income and Asset Certificate must be issued in the format prescribed by the Government of India. The certificate is generally valid for the financial year in which it is issued, and IIMs require a fresh certificate issued for the relevant financial year at the time of application and again at the time of admission.

• The EWS certificate must be issued by a Revenue Officer not below the rank of Tehsildar.
• Annual family income from all sources must be below ₹8 lakh to qualify under the EWS category.
• Candidates must not belong to SC, ST, or OBC categories to be eligible for EWS reservation.
• Certain asset ownership conditions — such as not owning agricultural land beyond a specified limit — must also be met.

Common Mistakes to Avoid

A large number of candidates lose their reservation benefits at the final admission stage due to certificate-related errors. The most frequent issues include submitting state-list OBC certificates instead of centrally recognised ones, presenting outdated non-creamy layer certificates, and failing to get an EWS certificate for the correct financial year. Aspirants are strongly advised to collect fresh, valid documents well before the CAT 2026 registration process begins.

When Will CAT 2026 Registration Open?

While the official CAT 2026 notification is yet to be released by the convening IIM, CAT is historically conducted in November each year, with registration typically opening in August. Candidates should keep track of the official CAT website for the most updated schedule and certificate-related instructions.

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For official CAT notifications, candidates should bookmark the official CAT portal: iimcat.ac.in.