The Indian Institutes of Science Education and Research (IISERs) will start the IISER Aptitude Test (IAT) 2026 registration process from March 5, 2026, for undergraduate admissions to the 2026–27 academic session. The institute has clarified that admissions will be based solely on IAT 2026 scores, and JEE scores will not be considered. Aspirants seeking admission to any of the seven IISER campuses must apply online through the official portal iiseradmission.in.
The IAT 2026 will serve as the exclusive and mandatory gateway for admission to IISER Berhampur, Bhopal, Kolkata, Mohali, Pune, Thiruvananthapuram, and Tirupati. IISERs are autonomous institutions established by the Government of India to promote excellence in basic science education and research.
IAT 2026 Important Dates
| Event | Date |
| Application Portal Opens | March 5, 2026 |
| Application Portal Closes | April 13, 2026 |
| Application Correction Window | April 16–18, 2026 |
| Hall Ticket Release | May 24, 2026 |
| IAT 2026 Examination | June 7, 2026 (9:00 AM – 12:00 PM IST) |
The aptitude test will be conducted on June 7, 2026 (Sunday) from 9 AM to 12 Noon.
IAT 2026 Eligibility Criteria
Candidates must meet the following eligibility requirements:
- Passed Class 12 (or equivalent) or a minimum three-year diploma programme in science in 2024, 2025, or 2026.
- Secured at least 60% aggregate marks (55% for SC/ST/PwD candidates), calculated across all subjects.
- Studied at least three subjects among Biology, Chemistry, Mathematics, and Physics.
Subject-Specific Eligibility
Mathematics is mandatory for the following programmes:
- BS-MS in Computational and Data Sciences – IISER Kolkata
- BTech/BS in Economic Sciences – IISER Bhopal
- BS in Economic and Statistical Sciences – IISER Tirupati
Candidates must ensure they meet subject requirements before applying.
How to Apply for IAT 2026
Follow these steps to complete your application:
- Visit the official website: iiseradmission.in
- Click on “Apply for IAT-2026” on the homepage.
- Register to generate a User ID and Password.
- Fill out the application form, upload required documents, and pay the application fee.
- Review all details carefully before final submission, as certain fields cannot be modified later.
A correction window will be available from April 16 to April 18, 2026, for limited modifications.
Why IAT 2026 is Important
The IISER Aptitude Test remains the sole admission route for UG programmes across all seven IISER campuses. These institutes are recognized globally for their strong foundation in interdisciplinary science education, research training, and innovation. Admission through IAT ensures a standardized evaluation process focusing on scientific aptitude and analytical skills.
Quick Reference Summary
| Particulars | Details |
| Exam Name | IISER Aptitude Test (IAT) 2026 |
| Conducting Body | IISERs (Government of India) |
| Admission Mode | Only through IAT score |
| Application Dates | March 5 – April 13, 2026 |
| Exam Date | June 7, 2026 |
| Mode of Exam | Computer-Based Test |
| Official Website | iiseradmission.in |
Frequently Asked Questions (FAQs)
| When will IAT 2026 registration begin? |
| Registration will begin on March 5, 2026. |
| What is the last date to apply for IAT 2026? |
| The application portal will close on April 13, 2026. |
| Will JEE scores be accepted for IISER admissions 2026? |
| No, admissions will be based solely on IAT 2026 scores. |
| When will IAT 2026 be conducted? |
| The exam will be held on June 7, 2026, from 9 AM to 12 PM IST. |
| What is the minimum eligibility percentage? |
| 60% aggregate (55% for SC/ST/PwD candidates). |
| Is Mathematics compulsory for all programmes? |
| It is mandatory for specific programmes such as Computational and Data Sciences and Economic Sciences. |
| Where can I apply for IAT 2026? |
| Through the official website iiseradmission.in. |
| Will there be an application correction window? |
| Yes, from April 16 to April 18, 2026. |
The launch of the IAT 2026 registration process marks the beginning of admissions to India’s premier science institutions. Candidates aspiring for IISER undergraduate programmes must apply between March 5 and April 13, 2026, and prepare strategically for the June 7 examination. For official updates and detailed notifications, visit iiseradmission.in regularly and bookmark this page for future announcements, for more details and apply CLICK HERE
