CSAB 2027 SC Cutoff Process Explained

CSAB allocates seats that remain vacant in NITs, IIITs, and GFTIs after JoSAA's main rounds finish. The same central reservation policy that governs JoSAA applies here: SC candidates get 15% reservation, cutting across every institute's Home State and Other State seat pools. This structure is a long-standing government policy rather than something redefined each counselling cycle, so it is reasonable to expect it unchanged for CSAB 2027.

Because SC reservation is vertical, SC candidates compete only among themselves for their designated share of seats, not against the General or OBC-NCL pool. This is why SC cutoff ranks (in terms of JEE Main All India Rank) appear numerically far higher than General category cutoffs for the exact same branch and institute — it does not reflect a lower academic bar, only a smaller, separately-ranked competition pool.

In JoSAA, SC seats at top NITs fill up in early rounds given consistent demand. By the time CSAB begins, the SC seats still vacant are typically concentrated at newer NITs, certain IIITs, and GFTIs where SC candidate turnout in JoSAA was comparatively lower. This means CSAB SC cutoffs at these institutes can open up substantially compared to JoSAA's final closing ranks — a dynamic driven by structural demand patterns that is expected to repeat in the 2027 cycle, though exact numbers remain unknown this far in advance.

SC certificates do not require annual renewal since caste status is not income-dependent. The certificate must be issued by a competent authority in the prescribed central government format, listing the caste exactly as it appears in the Central List of Scheduled Castes applicable to the candidate's state of origin. A common pitfall: SC status is determined by state of origin, not the state of current residence or Class 12 schooling.

SC candidates also benefit from the 65% Class 12 aggregate eligibility threshold (versus 75% for General/OBC-NCL/EWS), a relaxation that has applied consistently through JoSAA and, by extension, CSAB for years.