INBO Exam Date 2026: Schedule & Important Deadlines
The INBO Exam Date 2026 has been released on the official website. NSEB was held on November 23, 2025 and INBO will be held on February 1, 2026, from 13:30 to 15:30 hrs. Candidates can check the complete Schedule & Important Deadlines here.
Supriya Shrivastava25 Nov, 2025
INBO Exam Date 2026: The Indian National Biology Olympiad, or INBO, is a nationwide competition held by the Homi Bhabha Centre for Science Education (HBCSE) as part of the Biology Olympiad Program. Students in 11th and 12th grade are the target audience. Every year, a significant number of people take the exam, which is held in more than 15 centers around India.
INBO Exam Date 2026
The Indian National Biology Olympiad (INBO) for 2025-26, part of the recognized Science Olympiad program, sets out a tough competitive path for future biologists. This examination series, which is jointly administered by the Homi Bhabha Centre for Science Education (HBCSE-TIFR) for Stages 2 and 3 and the Indian Association of Physics Teachers (IAPT) for Stage 1 (NSEB), finds outstanding talent.
The academic program challenges students with non-routine, Olympiad-level tasks and is in line with Class XI–XII Biology. This notification gives participants aiming for the INBO Exam Date 2026 and later stages clarity by detailing the whole timetable.
INBO Exam Date 2026 Overview
This section gives an overview of the Indian National Biology Olympiad exam calendar, including the conducting bodies, session phases, and important dates for each stage.
| INBO Exam Date 2026 Overview | |
|---|---|
| Particulars | Details |
| Exam Conducting Body | IAPT (Stage-1), HBCSE-TIFR (Stages 2, 3) |
| Session/Term | 2025–26 |
| Official Notification Released | To be released |
| Exam Date(s) | NSEB: 23 Nov 2025; INBO: 1 Feb 2026; OCSC-Biology: Apr–May 2026 |
| Official Exam Scheme/Schedule | iapt.org.in |
INBO Exam Date 2026: Important Dates
Candidates preparing for this prestigious examination must note these critical dates and deadlines. Adhering to the stipulated exam schedule for registration, examinations, and subsequent stages is crucial for a seamless application and participation process, avoiding any last-minute complications.
| INBO Exam Date 2026: Important Dates | |
|---|---|
| Event | Date |
| Notification Released | To be released |
| Registration Start Date | 21 Aug 2025 (Student Enrolment) |
| Last Date to Apply Without Late Fee | 14 Sept 2025 (Student Enrolment) |
| Last Date to Apply With Late Fee | To be released |
| Admit Card Release Date | To be released |
| Exam Date(s) | NSEB: 23 Nov 2025; INBO: 1 Feb 2026 |
| Result Announcement Date | To be released |
INBO Exam Schedule 2026
This section explains the exam format by describing the exact timetable and program for the first phases of the Biology Olympiad. Understanding key information, such as paper sessions, precise dates, start and end times, and overall duration, is critical for efficient exam preparation and planning.
| INBO Exam Date 2026: Exam Schedule/Timing | |||
|---|---|---|---|
| Paper/Session | Date | Timings | Duration |
| NSEB (Stage-1) | Sun, 23 Nov 2025 | 2:30 PM – 4:30 PM IST | 2 hours |
| INBO (Stage-2) | Sun, 1 Feb 2026 | 1:30 PM – 3:30 PM IST | 2 hours |
INBO Admit Card 2026 Release Dates
The INBO admit card is a mandatory document for appearing in the INBO Exam 2026. Understanding its release timeline and the procedure for downloading it is crucial. The INBO admit card will be released soon on the official website. This section provides the necessary details regarding when and how candidates can obtain