IISER Answer Key 2026 will be released by the exam officials on the same day after the successful conduct of the examination. At first, the IISER 2026 provisional answer key will be released by the exam officials in the fourth week of May 2026, tentatively.
Test takers will be able to check the correct answers marked by the exam officials and tally their IISER 2026 scores. The exam officials will also release the IAT 2026 student response sheet in order to check the responses made by them during the exam.
Candidates who are not satisfied with the answer given by the exam officials will be able to raise objections against the released IAT 2026 provisional answer key. Based on the corrections made in the provisional answer key, the IISER final answer key will be released in the fourth week of June 2026, tentatively.
Check out the complete insight on IAT answer key 2026, student response sheet, dates and other updates on this SciAstra exam page.
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IAT 2026 Exam Dates
Since IAT 2026 admission dates are yet to be announced by the exam officials, candidates can check out the previous year’s dates from here for reference:
| IISER Entrance Exam Dates 2026 | Event Date (Tentative) |
|---|---|
| IISER 2026 Exam Notification | Jan 25, 2026 – Jan 31, 2026 |
| IISER Exam 2026 Registration Date | March 10, 2026 to April 15, 2026 |
| IISER Admit Card 2026 | May 15, 2026 |
| IISER Exam 2026 | May 25, 2026 |
| IISER Provisional Answer Key 2026 | May 25, 2026 |
| IISER Exam Student Response Sheet 2026 | May 29, 2026 |
| IISER Final Answer Key 2026 | June 24, 2026 |
| IISER Result 2026 | June 24, 2026 |
How to Download the IISER 2026 Answer Key
Test takers can download the IAT 2026 answer key PDF (Provisional and Final answer key) by visiting the official website. Check out the steps to download the answer key from here:
Step 1: Visit the official website- the link will be provided soon.
Step 2: Click on the “IISER 2026 Provisional/Final Answer” link mentioned on the homepage of the official website.
Step 3: Check out the correct answers marked by the exam officials in the answer key.
Step 4: Tally the marks obtained in the examination.
How to Calculate Score Based on IISER Answer Key 2026
- For every correct answer marked by the candidates, +4 marks will be given.
- For every wrong answer marked by the candidates, a -1 mark will be deducted.
- If the candidate has not answered any question, no marks will be awarded.
- Calculate the number of correct answers and then multiply by 4
- Calculate the number of incorrect answers.
- Subtract the sum of incorrect answers from the sum of correct answers.
