IAT 2026 Application Correction Window Opens on April 16; Check Details Here

As per the official website update, the last date to submit the IISER 2026 Application Form was April 13, 2026, until 11:55 PM. Applicants who have successfully submitted their registration forms will be given an opportunity to edit the IAT 2026 registration form. The exam officials will open the IISER 2026 application correction window from April 16, 2026, at 11:00 AM onwards.

Mistakes made by applicants can be rectified within the time duration specified by the officials. The last date to make corrections during the IAT 2026 application correction window is April 18, 2026, until 11:55 PM. The exam authorities will also specify the editable and non-editable fields in the IISER 2026 application form.

The IISER Aptitude Test 2026 is scheduled to be held on June 7, 2026, in a single shift from 9:00 AM to 12:00 PM in online (CBT) mode to assess candidates’ domain knowledge. The exam will consist of multiple-choice questions (MCQs) from Mathematics, Physics, Chemistry, and Biology.

IACS Kolkata, IIT Guwahati, and IIEST Shibpur have been added to the list of IAT participating institutes for 2026.

IAT & NEST 2026 Crash Course

SciAstra launched the IAT & NEST 2026 Crash Course, dedicated to preparing students for IAT 2026 and NEST 2026, on March 30, 2026, in offline mode.

If you wish to broaden the choices of institutes to pursue undergraduate science and research courses, you should prepare for both exams and register for our crash course.

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IAT 2026 Exam Dates

Since the IAT 2026 admission dates have been released by the exam officials, candidates can check out the exam schedule below:

IISER Exam 2026 Application Correction Window: How to Modify Details

Candidates who have filled out the application form and successfully submitted the IAT 2026 registration will only be allowed to make corrections in the registration form during the application correction window. To correct the details in the application form, applicants need to follow the steps mentioned below:

• First, applicants are required to visit the official website: https://www.iiseradmission.in/

• Next, candidates need to log in to their registered account using their username and password, or directly click on the link “Application Correction Window” available on the official website. The link will redirect to the registered account.

• After logging in, candidates will be able to view the specific details that can be corrected, including editable and non-editable fields in the IISER 2026 application form.

• After making the corrections, candidates need to save the changes and submit the form. It is highly advisable for candidates to take a printout of the form for future use.

IAT 2026: List of Participating Institutes Updated

Along with IISERs, four other institutes are also accepting admissions through the IISER Aptitude Test 2026. These institutes include the following:

1. IIT Madras

2. IIT Guwahati

3. IIEST Shibpur

4. IACS Kolkata

5. IISc Bangalore

Best SciAstra Books for IAT 2026

SciAstra books are specifically designed for IAT, unlike traditional books, which focus on JEE or NEET. Aspirants preparing for the NEST 2026 and IAT 2026 exams can check out the best SciAstra books from here: