How JoSAA Counselling Works

JoSAA — the Joint Seat Allocation Authority — is the centralized body that conducts seat allocation for all 23 IITs, 31 NITs, 26 IIITs, and 33 GFTIs every year. It runs 6 rounds of allotment over 4–5 weeks, starting approximately 2 days after the JEE Advanced result.

The process is entirely merit-based. No management quota, no donations, no interviews — your JEE rank is the only factor. The algorithm is transparent and processes all registered candidates simultaneously, assigning each the best available seat from their choice list based on rank order.

JoSAA 2026 is expected to begin on June 3, 2026 (registration opens) with Round 1 allotment around June 15, 2026, and the final Round 6 wrapping up by early July 2026.

The JoSAA algorithm is a variant of the Deferred Acceptance (Gale-Shapley) mechanism adapted for seat allocation. Here is how it works in practice:

• Candidates are processed in rank order — rank 1 is processed first, then rank 2, and so on.
• For each candidate, the algorithm checks choices from their #1 preference downward and assigns the first choice for which a seat is available in the correct category.
• Once a seat is assigned and accepted, it is removed from the pool for that round.
• If you choose Float, your current seat is held, but the algorithm tries to upgrade you to a higher-priority choice in the next round if a vacancy appears.
• If you choose Slide, the algorithm tries to upgrade you to a better branch within the same institute only.
• If you choose Freeze, you exit the upgrade process and your seat is confirmed.

Key insight: Ordering your choices correctly is the single most important strategy in JoSAA. Always put your absolute dream choice at #1, even if it seems out of reach — you have nothing to lose. The algorithm only moves you down to feasible options.