IISER 2026: Document Upload Window Opens Today; Answer Key Challenge Closes Tonight
The Indian Institute of Science Education and Research (IISER) has commenced the IISER 2026 document upload process from June 13, 2026.

The Indian Institute of Science Education and Research (IISER) has commenced the IISER 2026 document upload process from June 13, 2026. Candidates who appeared for the IISER Aptitude Test (IAT) can now log in to the official admission portal to upload or update their required documents. The facility will remain active until June 21, 2026. In parallel, the answer key objection window will close today at 11:55 PM, making it a crucial day for aspirants.
Key Dates at a Glance
| Event | Date / Deadline |
|---|---|
| Document Upload Window Opens | June 13, 2026 |
| Last Date to Upload Documents | June 21, 2026 |
| Answer Key Challenge Closes | June 13, 2026 (11:55 PM) |
Document Upload Process
Candidates must log in to the IISER admission portal using their registered credentials. The portal allows applicants not only to upload fresh documents but also to replace previously submitted ones if corrections are needed.
Steps to Upload Documents:
- Visit the official IISER admission portal
- Log in using application number and password
- Navigate to the document upload section
- Upload or replace required documents
- Review and submit carefully
List of Required Documents
Candidates are required to upload the following documents (as applicable):
- GEN-EWS Certificate (issued on or after April 1, 2026)
- OBC-NCL Certificate (issued on or after April 1, 2026)
- Class 12 Marksheet or Equivalent Certificate
Important Instructions for Candidates
- Ensure all documents are clear, legible, and error-free
- Verify details before final submission
- Upload certificates in the prescribed format
- Avoid last-minute submissions to prevent technical issues
- Any incorrect or invalid document may lead to rejection of candidature
IISER 2026 Answer Key Challenge
The answer key objection window for IISER 2026 will close today at 11:55 PM. Candidates who have identified discrepancies in the provisional answer key must submit their objections through the IAT login portal within the deadline.
Key Points:
- Objections can be submitted only in online mode
- Late submissions will not be accepted
- Final answer key will be released after reviewing objections
- Results and merit list will be based on the final answer key
What Candidates Should Do Now
With two critical deadlines overlapping, candidates should prioritize:
- Submitting valid objections (if any) before tonight
- Preparing and uploading documents well before June 21
- Double-checking all entries to avoid disqualification
Conclusion
The IISER 2026 admission process has entered a decisive phase. While the document upload window provides a limited opportunity for verification, the closure of the answer key challenge tonight marks a key milestone toward result declaration. Candidates must act promptly and carefully to ensure their eligibility remains intact.
