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IISER Aptitude Test
Registration opens
Based on IAT 2026's 5 Mar opening. 2027 schedule not yet released.
~Mar 2027
Provisional
Exam date
Based on IAT 2026's 7 Jun exam date. 2027 schedule not yet released.
~Jun 2027
Provisional
Application fee
₹2000(₹1000 SC/ST/reserved)
Provisional - IISER IAT 2026 fee
Official website
https://www.iiseradmission.inIAT is the entrance exam for the 5-year BS-MS dual degree (and some 4-year BS/B.Tech) programs at India's 7 IISERs (Pune, Kolkata, Mohali, Bhopal, Thiruvananthapuram, Tirupati, Berhampur) - the country's flagship pure-sciences research track, alongside NEST. Participation has grown sharply in recent years - from under 35,000 candidates in 2023-24 to over 1.86 lakh in 2026.
Mode
Computer-based test (CBT)
Duration
3 hours
Questions
60
Total marks
240
Marking scheme
+4 correct / -1 incorrect
Sections
Seats are allotted directly by IAT rank and category - no separate counselling interview stage. Students choose their major after a common first year or two, depending on the specific IISER.
The official notification for this cycle hasn’t been released yet, so there’s nothing to verify against - everything above is an estimate based on past years. Always confirm on the official website once it’s released.
