IISER releases the IISER IAT 2026 answer key on the official portal iiseradmission.in. Since the IISER Aptitude Test (IAT) 2026 was held on 7 June 2026, the provisional answer key is out with the objection window open 7-13 June 2026. Candidates use it to estimate their score before the result.
IISER IAT 2026 Answer Key
What is the IISER IAT 2026 answer key?
The answer key lists the correct responses for the question paper. Basically, IISER first releases a provisional key, and candidates can challenge answers they find incorrect during 7-13 June 2026. Subsequently, the final answer key is used to prepare the result.
IISER IAT 2026 Answer Key Link – Access the official portal to download the answer key at iiseradmission.in.
Important Dates
| Exam Event | Event Date |
|---|---|
| IAT 2026 exam date | 7 June 2026 (conducted) |
| Provisional answer key | 7 June 2026 (released) |
| Objection window | 7 – 13 June 2026 |
| Result | 4th week June 2026 (expected) |
How to Download IISER IAT 2026 Answer Key
- First, open iiseradmission.in, or click the link given above on this page.
- Next, log in and open the answer key / response sheet section.
- Then, download the answer key and your recorded responses.
- Finally, match them and calculate the probable score.
How to Calculate Your Score
- Award +4 marks for each correct answer and deduct 1 mark for each incorrect answer; unattempted questions score 0.
- Probable score = (correct x 4) – (incorrect x 1), out of 240.
- Compare with previous IAT cutoffs to gauge your chances. For practice, use the IISER IAT previous year question papers.
How to Raise Objections
- Log in to iiseradmission.in during 7-13 June 2026.
- Select the question you wish to challenge and submit your claim with supporting evidence.
- Pay the prescribed fee, if applicable, and submit before the deadline.
- Valid objections are reflected in the final answer key.
IISER Aptitude Test (IAT) 2026
IAT is the IISER Aptitude Test, conducted by the seven IISERs for admission to BS-MS, BS, and BTech programmes. Candidates who appeared with the admit card use the answer key to estimate the score and then await the result.
IISER IAT Answer Key – An Overview
| Aspect | Information |
|---|---|
| Name of Exam | IISER IAT 2026 |
| Conducting Body | IISERs (jointly) |
| Exam Date | 7 June 2026 (conducted) |
| Answer Key | Provisional 7 June; objections 7-13 June |
| Marking | +4 correct; -1 incorrect (out of 240) |
| Official Website | iiseradmission.in |
| Similar Exams | Science Entrance Exams |
IISER IAT Answer Key FAQs
The IISER IAT 2026 provisional answer key was released on 7 June 2026 at iiseradmission.in, with the objection window open 7-13 June 2026.
Award +4 for each correct answer and -1 for each incorrect answer; unattempted questions score 0. So probable score = (correct x 4) – (incorrect x 1), out of 240.
Yes. IAT 2026 has negative marking – each incorrect answer carries -1 mark, while each correct answer carries +4 marks.
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