IISER Aptitude Test (IAT) 2026 – Complete Guide for IISER Admissions
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IAT (IISER Aptitude Test) is the centralized entrance exam for admission into IISERs. From 2026 onwards, it has become the primary and almost exclusive route for IISER admissions, replacing older channels like JEE and KVPY.
IAT → IISERs → 5-Year BS-MS Dual Degree
(Research-Oriented Science Programs)
What is IAT Counselling?
IAT counselling is conducted through a centralized system managed by the Joint Admissions Committee (JAC). Students are allotted IISER seats based on rank, category, and preferences.
How IAT Counselling Works
- Your IAT Rank (AIR)
- Your Category (GEN, OBC-NCL, SC, ST, EWS, PwD)
- Your Preference Order (IISER campuses)
- Seat Availability (~2300+ seats)
Step-by-Step IAT Counselling Process
1. Registration
Register for counselling through the official IISER admission portal.
2. Choice Filling
Select IISER campuses and programs in priority order.
3. Choice Locking
Lock preferences before deadline. If not locked, system auto-locks.
4. Seat Allotment
Seats are allotted in multiple rounds based on rank and preferences.
5. Seat Acceptance
- Freeze: Accept final IISER seat
- Float: Wait for better IISER in next rounds
6. Seat Acceptance Fee (SAF)
Pay SAF to confirm your seat. Failure to pay leads to cancellation.
7. Document Verification
Upload documents and complete verification process.
8. Final Reporting
Report physically to the allotted IISER campus.
Participating IISERs
- IISER Pune
- IISER Kolkata
- IISER Mohali
- IISER Bhopal
- IISER Thiruvananthapuram
- IISER Tirupati
- IISER Berhampur
Eligibility Criteria (Very Important)
- Must have passed Class 12 in 2024, 2025, or appearing in 2026
- Minimum 60% (GEN/OBC/EWS) and 55% (SC/ST/PwD)
- Must have studied at least 3 subjects among Physics, Chemistry, Math, Biology
IAT Exam Pattern
- 60 Questions (15 each: Physics, Chemistry, Math, Biology)
- +4 for correct, -1 for wrong
- Total Marks: 240
- Duration: 3 Hours
Seat Matrix Insight
Total IISER seats are around 2300+, making competition extremely high. Top IISERs like Pune, Kolkata, and Mohali close at very high ranks.
Documents Required for IAT Counselling
- IAT Admit Card
- IAT Rank Card
- Class 10 Marksheet (DOB proof)
- Class 12 Marksheet
- Category Certificate (valid after April 1, 2026)
- Income Certificate (EWS/OBC-NCL)
- Passport-size photographs
- Photo ID proof (Aadhar Card, etc.)
Important Dates for IAT 2026
- Application Start: March 5, 2026
- Last Date: April 13, 2026
- Admit Card: May 24, 2026
- Exam Date: June 7, 2026
- Counselling Start: June End 2026
- Final Admission: July/August 2026
Join our student community to get:
- Real-time IAT updates
- Cutoff alerts
- Preference filling guidance
- IISER prediction help
Financial Support & Scholarships
IISER students are eligible for INSPIRE scholarships (~₹60,000/year) and research internships.
Important Rules
- Admission is fully merit-based
- No management quota
- Strict document verification rules
Smart Strategy for Students
1. Top IISERs (Dream)
2. Mid IISERs (Safe)
3. New IISERs (Backup)
1. Focus on all 4 subjects equally
2. NCERT mastery is critical
3. Accuracy > Attempts
FAQs
Is IISER better than IIT?
IISERs are best for research, while IITs are more engineering-focused.
Can I skip a subject in IAT?
No, all subjects are compulsory.
Is admission guaranteed after qualifying?
No, it depends on rank and seat availability.
Final Thoughts
IAT is highly competitive. Smart preference filling and strong conceptual understanding can significantly improve your chances of getting into a top IISER.