The IISER Aptitude Test (IAT) is the national entrance examination used for admission to undergraduate programmes offered by the Indian Institutes of Science Education and Research. IISERs provide interdisciplinary science education integrated with research. The admission process includes the five-year BS-MS programme at IISERs and other programmes offered by individual IISERs.
| Full Name | IISER Aptitude Test |
|---|---|
| Short Name | IAT |
| Conducting Body | Joint Admissions Committee / IISER Admissions |
| Exam Level | National Level |
| Category | Science / Research |
| Exam Mode | Computer Based Test |
| Duration | 180 minutes |
| Total Questions | 60 questions |
| Total Marks | 240 marks |
| Subjects | Biology, Chemistry, Mathematics and Physics |
| Participating IISERs | IISER Berhampur, IISER Bhopal, IISER Kolkata, IISER Mohali, IISER Pune, IISER Thiruvananthapuram and IISER Tirupati. |
| Official Website | https://www.iiseradmission.in/ |
| Qualifying Examination | Candidates must have passed or be appearing in the qualifying examination within the passing-year window specified by the official IAT admission brochure. |
| Recognised Board | The qualifying examination must be from a board or council recognised under the rules specified by IISER Admissions. |
| Science Subjects | Candidates seeking admission to the five-year BS-MS programme must have studied at least three subjects among Biology, Chemistry, Mathematics and Physics. |
| Mathematics Requirement | Mathematics is required for programmes where Mathematics is prescribed in the official eligibility criteria. |
| Nationality | Indian nationals and other categories permitted by the official IISER admission rules may apply. |
| Passing Year | The permitted qualifying-examination passing years are specified separately for each admission cycle. |
| Photograph | Recent photograph in the format specified by IISER Admissions. |
| Signature | Signature in the format specified in the application instructions. |
| Class XII Certificate | Qualifying examination certificate or marksheet as applicable. |
| Category Certificate | Valid category certificate where reservation or other category benefit is claimed. |
| Nationality Document | Documents supporting nationality or other permitted applicant category where required. |
| Equivalence Certificate | Candidates with qualifying examinations outside the specified recognised Indian boards may need an equivalence certificate according to the official rules. |
| IISER Berhampur | Indian Institute of Science Education and Research Berhampur. |
| IISER Bhopal | Indian Institute of Science Education and Research Bhopal. |
| IISER Kolkata | Indian Institute of Science Education and Research Kolkata. |
| IISER Mohali | Indian Institute of Science Education and Research Mohali. |
| IISER Pune | Indian Institute of Science Education and Research Pune. |
| IISER Thiruvananthapuram | Indian Institute of Science Education and Research Thiruvananthapuram. |
| IISER Tirupati | Indian Institute of Science Education and Research Tirupati. |
| 5-Year BS-MS | The five-year BS-MS dual degree is the principal undergraduate science programme offered across IISERs. |
| BS-MS in Computational and Data Sciences | IISER Kolkata offers a five-year BS-MS programme in Computational and Data Sciences. |
| BS in Economic Sciences | IISER Bhopal offers a four-year BS programme in Economic Sciences. |
| BS in Economic and Statistical Sciences | IISER Tirupati offers a four-year BS programme in Economic and Statistical Sciences. |
| B.Tech Chemical Engineering | IISER Bhopal offers a B.Tech programme in Chemical Engineering. |
| B.Tech Electrical Engineering and Computer Science | IISER Bhopal offers a B.Tech programme in Electrical Engineering and Computer Science. |
| B.Tech Data Science and Engineering | IISER Bhopal offers a B.Tech programme in Data Science and Engineering. |
The official IAT 2027 admission notification will be released by IISER Admissions.
IAT 2027 registration start date will be announced officially.
The last date for IAT 2027 application submission will be announced officially.
Any correction facility and its schedule will be announced in the official IAT 2027 notification.
IAT 2027 admit card information will be announced officially.
The IAT 2027 examination date will be announced officially.
The IAT 2027 answer key schedule will be announced officially.
IAT 2027 result date will be announced officially.
IISER counselling and seat-allocation dates will be announced through the official admission portal.
| Subject | MCQs | Numerical | Marks |
|---|---|---|---|
| Biology | — | — | 60 |
| Chemistry | — | — | 60 |
| Mathematics | — | — | 60 |
| Physics | — | — | 60 |
| Total | — | — | 240 |
| Marking Scheme | — | — | — |
Visit the official IISER Admissions website and read the current admission brochure.
Create an account and provide the required personal and contact information.
Enter personal, academic, category and programme-related information.
Select the IISER programmes and preferences available through the admission process.
Upload the required photograph, signature and supporting documents.
Pay the applicable IAT application fee through the official portal.
Verify all information and submit the application before the deadline.
Download and retain the submitted application and payment confirmation.
Appear for the computer-based IISER Aptitude Test according to the official schedule.
Candidates who qualify the admission process must participate in the IISER counselling and seat-allocation process.
| Category | year | status |
|---|---|---|
| IAT 2027 Cutoff | 2027 | TBA |
| IISER Wise Cutoff | — | — |
| Category Wise Cutoff | — | — |
Percentile cutoffs shown are for illustration and vary each year based on difficulty and number of candidates.
Stay updated on dates, admit card and results.
