The IISER Aptitude Test (IAT) 2026 is now accepting applications for candidates seeking admission to the 5-year BS-MS Dual Degree programmes at all seven IISERs, as well as the Integrated PhD programme at IISc Bangalore. This national-level entrance exam evaluates knowledge in Physics, Chemistry, Mathematics, and Biology at the Class XII standard. Interested students must apply through the unified online portal, which also handles counselling and seat allocation for all participating institutes. The IAT score is mandatory for eligibility, and applicants should check the portal for detailed instructions and deadlines. This is a centralised process, making it easier for candidates to apply to multiple institutes with a single exam. Make sure to submit your application before the specified last date to be considered for admission.