IISER 2026 Document Upload Window Opens: Answer Key Challenge, Counselling, Merit List

IISER 2026 Document Upload Window has officially opened for candidates seeking admission through the IISER Aptitude Test (IAT) 2026. The Indian Institutes of Science Education and Research have activated the selective information and document upload facility on the official admission portal, allowing applicants to upload, update, or replace required certificates and academic records. Candidates can complete the process until June 21, 2026. At the same time, candidates who wish to challenge the provisional answer key must act quickly, as the IISER 2026 Answer Key Objection Window will close today at 11:55 PM. After the deadline, no further objections will be accepted, and the final answer key will be prepared after reviewing all submitted challenges

IISER 2026 Document Upload Window Dates and Important Schedule

Candidates participating in the IISER admission process should carefully note the key dates associated with document submission and answer key challenges. These dates are crucial for admission to BS-MS, BS, and B.Tech programmes offered through the IISER admission process

IISER 2026 Document Upload Process at iiseradmission.in

The IISER 2026 Document Upload Window allows candidates to submit documents that may not have been available during the initial application stage. Applicants can also replace previously uploaded documents if corrections are required. Candidates must log in using their registered credentials and verify all uploaded information carefully before final submission. The admission authority has emphasized that all certificates must be accurate, valid, and free from errors Steps to Upload Documents for IISER 2026 Admission Candidates can follow the process below:

1. Visit the official IISER admission portal.
2. Log in using the registered User ID and Password.
3. Open the document upload section.
4. Upload or replace the required certificates.
5. Verify all details carefully.
6. Submit the documents before the deadline.
7. Save the confirmation page for future reference.

IISER 2026 Required Documents for Upload

Candidates should ensure that all mandatory documents are available in the prescribed format before accessing the upload facility. Missing or incorrect documents may affect admission eligibility and counselling participation. The commonly required documents include:

• Class 10 Marksheet
• Class 12 Marksheet or equivalent qualifying certificate
• GEN-EWS Certificate (if applicable)
• OBC-NCL Certificate (if applicable)
• Valid Photo Identity Proof
• Passport-size Photograph
• Candidate Signature

For reserved category candidates, certificates should comply with the validity requirements specified by the admission authority.

IISER IAT 2026 Answer Key Challenge Closes Tonight

Alongside the document upload process, candidates have one final opportunity to challenge the IISER IAT 2026 Provisional Answer Key. The objection portal remains open only until 11:55 PM today. After this deadline, the admission committee will review submitted objections and prepare the final answer key. The provisional answer key was released after the IAT examination, while the response sheets became available on June 09, 2026, enabling candidates to compare their responses and identify discrepancies. Candidates who find errors in the answer key must submit objections online through the admission portal within the specified timeline. Valid objections supported by evidence will be reviewed by the expert committee.

IISER 2026 Response Sheet and Score Calculation

The IISER 2026 Response Sheet was released to help candidates evaluate their performance before the declaration of results. By comparing recorded responses with the provisional answer key, candidates can estimate their expected scores. The response sheet contains:

• Candidate Roll Number
• Application Number
• Question Paper Details
• Recorded Responses
• Examination Information

The response sheet does not contain correct answers. Candidates must use it alongside the answer key to calculate probable marks.

IISER Admission 2026 Programmes and Seat Availability

The IISER Aptitude Test (IAT) 2026 serves as the gateway to undergraduate science programmes offered by participating IISER campuses. Admissions are granted to candidates seeking entry into BS-MS Dual Degree programmes, BS programmes, and selected B.Tech courses. The examination was conducted on June 07, 2026, in computer-based mode across multiple centres nationwide. Candidates were assessed in Physics, Chemistry, Mathematics, and Biology through a multiple-choice question format.

IISER Result 2026 and Merit List Preparation

Following the closure of the answer key challenge process, the admission authority will evaluate all objections and release the IISER Final Answer Key 2026. The final answer key will serve as the basis for preparing the IISER Result 2026 and the admission merit list. Candidates who successfully complete the document upload process and satisfy eligibility requirements will be considered during the counselling and seat allocation stages. The merit list will determine admission opportunities across participating IISER campuses and associated programmes.

IISER 2026 Counselling Process After Document Verification

The document upload phase represents an important step before counselling begins. During counselling, candidate eligibility, category claims, academic qualifications, and uploaded certificates will be verified before seat allotment. Candidates should ensure:

• Documents are legible and error-free.
• Certificates are valid and updated.
• Uploaded files match official records.
• All mandatory information is correctly submitted.

Any discrepancy detected during verification may lead to delays or rejection of candidature.

IISER 2026 Admission Update: What Candidates Should Do Now?

With the IISER 2026 Document Upload Window now active and the IISER Answer Key Challenge Window closing tonight, candidates should prioritize both tasks immediately. Those awaiting the IISER Result 2026 should ensure that all required documents have been uploaded before June 21, 2026, while candidates intending to raise answer key objections must do so before 11:55 PM today. The upcoming release of the final answer key, result, merit list, and counselling schedule will determine admission to one of India's most competitive science education programmes.