CSAB 2026 Vacant Seat Matrix Released: Check Branch-Wise Vacancies in NITs, IIITs & GFTIs

Key Takeaway

The Central Seat Allocation Board (CSAB) has released the tentative vacant seat matrix for CSAB Special Rounds 2026, giving JEE Main qualified candidates another opportunity to secure admission after JoSAA counselling. This year, the seat matrix includes 15,423 tentative vacant seats across 114 participating institutes, including NITs, IIITs, IIEST Shibpur, and GFTIs. The vacancy list is available branch-wise, category-wise, and quota-wise, making it one of the most important documents for candidates preparing their CSAB preference list.

CSAB 2026 Vacant Seat Matrix Released

The tentative seat matrix was released on 28 July 2026 and is now available on the official CSAB portal. Candidates can download the PDF to check institute-wise and branch-wise vacancies before filling their choices. Since these vacancies are tentative, additional seats may become available during the counselling process as students withdraw, fail to report, or surrender seats. The official document also advises candidates to fill programmes they are willing to join even if they are not currently listed as vacant. 

Many students make the mistake of looking only at the number of vacant seats. Instead, focus on where those seats are available. A branch with only a few vacancies in a top NIT may still be more attainable than expected if previous closing ranks moved significantly during CSAB. Likewise, branches with dozens of vacancies may remain competitive depending on demand.

Quick Snapshot of the 2026 Seat Matrix

OGcollege Insight: The vacancy matrix is tentative and subject to change during counselling. 

Which Branches Have the Highest Vacancies?

The exact distribution varies from institute to institute, but the released matrix shows vacancies across both core and emerging branches. Several institutes have vacancies in Civil Engineering, Mechanical Engineering, Electrical Engineering, Electronics & Communication Engineering, as well as newer specialisations like Artificial Intelligence, Data Science, Internet of Things, VLSI, Embedded Systems, Transportation Engineering, and Quantum Technologies. The availability differs by category and quota, so candidates should always check the official PDF for their specific eligibility. 

NITs, IIITs and GFTIs All Have Opportunities

Many aspirants focus only on NITs during CSAB. However, this year's matrix also contains vacancies across several IIITs and GFTIs, including seats in popular Computer Science specialisations and Electronics branches. Depending on your JEE Main rank, some IIITs and GFTIs may offer stronger branch options than lower-ranked NITs. A balanced preference list should compare institutes across all participating categories instead of limiting choices to one institute type.

Don't Fill Choices Based Only on Vacancies

A larger number of vacant seats does not automatically mean an easier admission. The final cutoff depends on factors such as candidate preferences, category, Home State or Other State quota, and the number of students participating in CSAB. Some branches with relatively few vacancies still witness substantial cutoff movement, while others with many vacant seats remain competitive. Use the vacancy matrix together with previous CSAB closing ranks instead of relying on vacancy numbers alone.

Why This Seat Matrix Matters

The vacant seat matrix is one of the most valuable resources available before CSAB choice filling. It helps candidates identify colleges where seats are actually available, compare branch options across institutes, estimate possible cutoff movement, and build a more realistic preference list. Students who analyse the matrix carefully often discover colleges and branches that they would have otherwise ignored.

Download the Official Seat Matrix

Candidates should always use the official CSAB vacancy matrix instead of relying on screenshots or edited lists circulating on social media. You can download the latest Tentative Seat Vacancy for CSAB Special Rounds 2026 PDF directly from the official CSAB portal:  CSAB 2026 Tentative Vacant Seat Matrix PDF You can also access the counselling portal here:  Official CSAB 2026 Portal

Build Your Preference List Using Data

Looking at a 700+ page vacancy PDF manually can be overwhelming. The OGcollege CSAB College Predictor helps you identify institutes where your JEE Main rank has realistic admission chances based on previous counselling trends. After shortlisting colleges, the OGcollege CSAB Choice Filling Tool helps organise your preferences using historical cutoff data rather than guesswork, making your final choice list much more structured.

If you're participating in CSAB this year, you may also find Build a CSAB Preference List Based on Data, Not Guesswork useful. You can also read CSAB Choice Filling 2026: A Practical Guide to Choosing the Right NIT, IIIT & GFTI before locking your final preferences.

Talk to Seniors Before Locking Your Choices

The vacancy matrix tells you where seats are available. Current students can tell you whether those seats are worth choosing. Through the OGcollege Talk to Seniors platform, you can connect with students studying in different NITs, IIITs, and GFTIs. Yatharth Singh (NIT Meghalaya) can explain campus life and CSE opportunities, Kirti Goyal (NIT Kurukshetra) can discuss placements and hostel experience, Nikhil Gorle (IIIT Dharwad) can share insights into coding culture and internships, while Saurabh Kumar Gupta (NIT Mizoram) can help you understand academics and branch-specific opportunities. Speaking with seniors before finalising your preference list often provides practical clarity that vacancy numbers alone cannot.

Conclusion

The release of the CSAB 2026 tentative vacant seat matrix marks one of the most important stages of the counselling process. With 15,423 tentative vacant seats across 114 participating institutes, candidates now have the opportunity to analyse branch-wise vacancies and prepare a smarter preference list. Instead of selecting colleges based solely on vacant seat counts, combine the official matrix with previous cutoff trends, placement data, and real student insights to maximise your admission chances. 

Verified Sources

Official CSAB 2026 Portal

CSAB 2026 Tentative Vacant Seat Matrix PDF

Careers360 – CSAB Vacant Seats 2026 Analysis.