JoSAA registration opens on 2 June 2026, exactly one day after JEE Advanced results. Before you log in, before you fill a single choice, before you even know your AIR, there is one document you must internalise: the IIT Seat Matrix 2026. It is the official, branch-wise, category-wise, gender-wise count of every B.Tech, B.S., B.Arch, and Dual Degree seat that JoSAA will allocate across the 23 IITs this season. Get the matrix wrong and you fill choices in a vacuum; get it right and you can compute your realistic admission band in 20 minutes flat.
This guide explains what the 2026 seat matrix will look like (the 2025 baseline is locked; 2026 expands marginally), how to read it correctly, the trap that 80% of candidates fall into when comparing branch popularity, and the exact way to use it alongside your projected AIR. If you want a mentor to walk you through your specific case once your rank is out, call 7033005444.
What the IIT seat matrix actually is
The IIT seat matrix is published by the Joint Seat Allocation Authority on josaa.nic.in. It is a single master table broken down by:
- Institute — all 23 IITs, from IIT Bombay and IIT Delhi at the top of demand to IIT Bhilai, IIT Goa, IIT Jammu, IIT Palakkad among the newer ones.
- Programme — every degree: 4-year B.Tech, 5-year B.S., 5-year Dual Degree (B.Tech + M.Tech), 5-year M.Sc, 5-year Integrated M.Tech, 5-year B.Arch.
- Quota — All India (AI) only, since IITs do not have state quotas (NITs do).
- Category — OPEN, OPEN-PwD, EWS, EWS-PwD, OBC-NCL, OBC-NCL-PwD, SC, SC-PwD, ST, ST-PwD.
- Gender — Gender-Neutral and Female-only (the 20% supernumerary quota for women, applicable across every category).
Each cell in the matrix tells you how many seats are available in that specific intersection. For example: “IIT Bombay → Computer Science and Engineering (4-Year B.Tech) → AI quota → OPEN → Gender-Neutral → 65 seats.” That number, combined with the previous year’s opening and closing ranks, is your single most powerful planning input.
The 2026 baseline: what to expect when the matrix drops
As of late May 2026 the JoSAA seat matrix page still shows the 2025 numbers; the 2026 matrix typically goes live the day JoSAA registration opens (2 June 2026). The 2025 baseline:
- Total IIT B.Tech and integrated programme seats in 2025: ~17,760.
- Expected 2026 total: 17,700-18,000 based on JAB’s incremental capacity additions at IIT Hyderabad, IIT Indore, and the newer IITs.
- IIT Kharagpur, IIT Madras, and IIT Bombay typically together account for ~3,600 seats — about 20% of the IIT pool.
- The seven newer IITs (Bhilai, Dharwad, Goa, Jammu, Palakkad, Tirupati, Dhanbad in current accounting) collectively offer ~3,200 seats.
The two structural changes to watch for in 2026: any expansion of the female-supernumerary quota (currently 20%) and any new programme launches at the newer IITs, especially in AI/Data Science streams. JAB has been pushing AI-DS programmes hard since 2023.
How to read the matrix correctly: the three numbers that matter
1. Seat count
Self-explanatory but commonly misread. A branch with 40 seats has more allotment elasticity than a branch with 12 seats. A 12-seat branch can swing its closing rank by 500-1000 positions year-over-year just because three or four candidates choose differently. A 60-seat branch is far more stable. Smaller branches are more volatile — this matters when you use last year’s closing rank as a predictor.
2. Opening Rank (OR) and Closing Rank (CR)
These come from the previous year’s final round of JoSAA (Round 6). The OR is the best AIR that got that branch in that category-gender; the CR is the last AIR that got it. The CR is the only one you should care about for choice filling. If your AIR is at or below the CR, you have a realistic shot. If your AIR is significantly above the CR, treat it as a stretch choice (which is fine — fill stretches too).
3. Round-wise drift
JoSAA runs six rounds. The CR drifts upward (i.e., higher AIRs admitted) across rounds as top-rankers withdraw or upgrade. Round 1 CR is the tightest; Round 6 CR is the loosest. Most published OR/CR data is Round 6 — meaning the displayed CR is the loosest of the season. If you want to optimise for Round 1 entry, look for previous-year Round 1 CRs separately (JoSAA publishes round-wise data).
The 80% trap: branch popularity is not branch placement
Most aspirants read the matrix and the CRs and conclude: “CSE everywhere is best.” That is half-correct and badly executed.
CSE at IIT Bombay closes around AIR 65-70 (Gender-Neutral, OPEN). CSE at a newer IIT might close around AIR 6,500-7,500. Both are “CSE.” Both will earn you a degree that says Computer Science. But the placement, peer group, lab infrastructure, and research opportunity profiles are different. Conversely, Electrical at IIT Madras closes tighter than CSE at a newer IIT — and arguably places equally well into core engineering and software roles. The matrix lets you see this if you read it laterally, not vertically.
The correct way to use the matrix is to bucket your realistic-AIR-range options into three tiers:
- Tier A — stretch: branches where the previous CR is 10-20% better than your projected AIR. Fill these at the top of your preference list. JoSAA Round 1 sometimes opens these up.
- Tier B — realistic: branches where the previous CR is within ±10% of your projected AIR. This is where you should spend most of your slots.
- Tier C — safety: branches with CR 30%+ above your AIR. Make sure at least 8-10 of your choices are in this tier so you do not exit JoSAA empty-handed.
Category and female-supernumerary mechanics
Reservation under the JoSAA framework is implemented through the seat matrix itself. The OPEN category is genuinely open — SC/ST/OBC/EWS candidates can also be allotted via the OPEN list if their AIR is good enough. The category-specific rows are reserved floors, not ceilings. This means a high-scoring OBC-NCL candidate often gets allotted under OPEN-Gender-Neutral at a better branch than the OBC-NCL row in the same institute would offer.
The female-supernumerary quota (20% additional seats reserved for female candidates, layered on top of the regular seats) shows in the matrix as a separate column. Female candidates compete in both the Gender-Neutral list and the Female list — whichever yields the better branch is the allotment that flows through. This is automatic; you do not fill choices differently as a female candidate.
The newer IITs vs the older IITs: a 2026-specific note
The seat matrix often surprises first-time aspirants when they see how much capacity sits in the newer IITs. Between IIT Bhilai, IIT Goa, IIT Palakkad, IIT Jammu, IIT Dharwad, and IIT Tirupati, you are looking at ~3,200 seats — roughly the combined intake of IIT Bombay, IIT Delhi, and IIT Madras. The OR-CR ranges are markedly looser at the newer IITs. If your projected AIR is between 9,000 and 18,000, the newer IITs become your primary playing field and the matrix tells you which branches at which newer IIT are within reach.
For 2026, watch specifically for: any new Artificial Intelligence and Data Science programme rows at IIT Bhilai and IIT Dharwad; expansion of Electrical and Electronics intake at IIT Tirupati; and any signal of M.Tech-converted-to-Dual-Degree slots at IIT Madras, which historically pull rank.
Where to find the matrix and what to download on Day 1
When JoSAA 2026 goes live on 2 June:
- Go to josaa.nic.in/seat-matrix/.
- Download the full IIT seat matrix PDF (institute-wise view).
- Download the previous year’s Round 1 and Round 6 OR-CR for IITs separately.
- Save all three files locally — server load on 2 June is historically brutal.
Open the matrix in a spreadsheet (copy-paste from the PDF works fine) and add one custom column: “My AIR Reach Status” with values Stretch / Realistic / Safety, based on the bucket logic above. By the end of your first JoSAA-day, you should have a ranked list of 40-60 choices ready to lock in. Read our companion JoSAA 2026 choice filling strategy for the sequencing logic.
One number to anchor everything: total IIT seats vs JEE Advanced qualifiers
Roughly 2 lakh candidates appeared for JEE Advanced 2026 on 17 May. Of these, around 50,000-55,000 will clear the qualifying cutoff and feature in the AIR list on 1 June. The IIT pool offers ~17,800 seats. Which means roughly 1 in 3 AIR holders gets an IIT seat. The other two-thirds will look at NITs, IIITs, and GFTIs via JoSAA — also valuable, also worth filling choices for, because the JoSAA portal handles all three together.
Knowing where you sit in this funnel — before you fill choices — is the difference between a strategic JoSAA campaign and a hopeful one.
Quick self-test
[cg_quiz title=”IIT Seat Matrix 2026 — Reader Test” q1=”Approximately how many B.Tech and integrated programme seats do the IITs collectively offer in 2026?” q1a=”~10,000″ q1b=”~17,800″ q1c=”~25,000″ q1d=”~40,000″ q1correct=”B” q2=”Which authority publishes the official IIT seat matrix?” q2a=”NTA” q2b=”JAB” q2c=”JoSAA” q2d=”MoE” q2correct=”C” q3=”What does CR stand for in seat-matrix-linked OR/CR data?” q3a=”Category Rank” q3b=”Closing Rank” q3c=”Combined Rank” q3d=”Cumulative Rank” q3correct=”B”]
FAQ
When will the IIT seat matrix 2026 be published?
JoSAA typically publishes the official 2026 seat matrix on the day registration opens — 2 June 2026 — on josaa.nic.in. The page currently displays 2025 data until then.
How many IIT seats are available in 2026?
Expected total intake across the 23 IITs is 17,700-18,000 B.Tech and integrated programme seats, marginally above the 2025 figure of ~17,760.
Are state quotas applied to IIT seats?
No. IITs follow the All India (AI) quota only. State quotas apply to NITs (Home State and Other State), not to IITs.
How does the female-supernumerary quota work?
The 20% female-supernumerary quota adds seats on top of the regular intake. Female candidates compete in both Gender-Neutral and Female-only seat lists, and JoSAA allots them whichever yields the better branch automatically.
Is the seat matrix the same across all six JoSAA rounds?
The total seat count is fixed at the start of counselling. However, vacancies created by candidates withdrawing or upgrading are redistributed in subsequent rounds, which causes Closing Ranks to drift upward.
Where do I download the previous year OR-CR alongside the matrix?
The same JoSAA portal (josaa.nic.in) publishes round-wise OR-CR archives for IITs, NITs, IIITs, and GFTIs. Download Round 1 and Round 6 separately — Round 1 is your tightest reference, Round 6 the loosest.
Want a mentor to bucket your projected AIR against the 2026 matrix and build your 40-60-choice list with you? Call JEE Gurukul at 7033005444. Free sessions run from 1 June (AIR day) to 7 June (JoSAA Round 1 lock).