CSAB Examination Guide

CSAB's entire calendar is compressed into roughly three to four weeks, running immediately after JoSAA's final round concludes, typically spanning late July through late August. Because the whole process is designed to finalize admissions before the academic session begins, deadlines are tight and candidates must track each stage closely.

Stage 1: Vacant Seat Matrix Display

Within days of JoSAA's final round and seat-freeze deadline, CSAB publishes the provisional and then final vacant-seat matrix — a detailed, institute-wise and branch-wise count of every seat left unfilled across NITs, IIITs, and GFTIs. Candidates should study this matrix carefully before registering, since it directly shows which institute-branch combinations have realistic availability.

Stage 2: Fresh Registration and Choice Filling

Registration for CSAB Special Rounds opens shortly after the vacant matrix is displayed and typically remains open for about a week. All candidates — whether returning from JoSAA or entirely new — must register afresh and build a brand-new choice list specific to CSAB's vacant-seat matrix; JoSAA choice lists do not carry over automatically.

Stage 3: Special Round 1 and Special Round 2

CSAB conducts exactly two Special Rounds (occasionally supplemented by a further mop-up round in some years), each following the familiar allotment-response-reporting cycle: seat allotment is published, candidates must respond within a short window (freeze, float, slide, or withdraw), followed by document verification and fee payment for those confirming a seat.

Stage 4: CSAB-NEUT Round

Running on an overlapping or immediately sequential timeline, the CSAB-NEUT round specifically allocates reserved seats for candidates domiciled in the North-Eastern states and specified Union Territories, using the same JEE Main rank basis but a separate reserved seat pool.

Stage 5: Final Reporting at Allotted Institute

Candidates who accept and freeze a seat in either Special Round must physically report to their allotted institute (or complete the prescribed online reporting process) within the specified deadline, typically in late August, shortly before the academic session begins in most NITs, IIITs, and GFTIs.

Why the Timeline Is So Compressed

Because CSAB operates after JoSAA has already consumed the bulk of the admission calendar, and because the academic session for most NITs/IIITs/GFTIs must begin on schedule, CSAB's entire registration-to-reporting cycle is deliberately compressed into under a month, leaving little room for delayed decision-making by candidates.

Illustrative Full Timeline

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Candidates should treat each of these windows as tight and non-negotiable — missing a response deadline in either Special Round typically results in forfeiture of that seat offer, with no guarantee of another chance in the same cycle.