IAT 2026: Documents Required, Eligibility and Registration Details

Documents Required for IISER 2026 Application Form: IAT 2026 participating institutes have released the IAT 2026 2026 exam date. The exam will be conducted on June 7, 2026. The IAT 2026 application form will be released online on March 5, 2026, at iiseradmission.in.

Before applying for the registration form, candidates need to be well-prepared, not only academically but also in terms of documentation.  It is important to keep all the required documents ready to ensure a smooth and error-free registration process. The Indian Institutes of Science Education and Research (IISERs) verify candidate eligibility, category claims, and academic credentials strictly based on the documents uploaded during the application and counselling stages.

Being aware of the complete list of documents in advance helps applicants avoid last-minute issues and ensures the timely submission of the application form. The documents required for the IISER 2026 application typically include personal identification proof, academic certificates, category certificates (if applicable), and recent photographs and signatures in the prescribed format.

This SciAstra blog provides a detailed overview of all the essential documents required for the IISER 2026 Application Form, along with important instructions to follow while uploading them.

Latest Updates:

• IISER 2026 Eligibility Criteria

IISER 2026 Registration Dates

Check out the IISER 2026 exam dates below:

What is the last date to fill IAT 2026 application form?

The IISER Aptitude Test 2026 notification has been released. As per the notification, the last date to fill out the IAT 2026 application form is April 13, 2026.

Also Read: IISER 2026 Exam Pattern

What is the IISER Eligibility Criteria 2026?

Candidates who are interested in appearing for IISER entrance exam, can check out the eligibility criteria mentioned below to understand the basic eligibility criteria that one needs to satisfy:

List of Documents Required to Fill IISER 2026 Application Form

It is important for the candidates to know what documents are required to fill the IISER 2026 Application Form. Here is the list of the updated documents that candidates need while filling out the IAT 2026 application form:

1. Recent Passport-Size Photograph

• A candidate needs to provide a clear, recent colour photograph.

• It is preferred that the photo needs to be taken against a light or white background.

• It is important for the candidates to note that their faces must be clearly visible without any shadows.

• Please avoid wearing caps, sunglasses, or masks.

2. Scanned Signature of the Candidate

• The signature should be done using a black or blue ink pen on white paper.

• It must match the candidate’s signature used in official records.

• Ensure the signature is neat and clearly visible.

3. Class 10 Marksheet or Certificate

• Used for date of birth verification.

• Candidates must enter details exactly as mentioned in the Class 10 certificate.

• A scanned copy may be required for reference or upload (if asked).

4. Class 12 Marksheet / Appearing Certificate

• Candidates who have passed Class 12 must keep their marksheet ready.

• Those appearing in 2026 may need to upload a self-declaration or select the “appearing” option in the form.

• Ensure subject details are accurate.

5. Valid Photo Identity Proof

Candidates need to keep any one of the following ID proofs ready:

• Aadhaar Card

• School ID Card

• Passport

• Voter ID

• PAN Card

• Driving Licence

The details entered in the application form must match the ID proof exactly.

6. Category Certificate (If Applicable)

Applicable for candidates belonging to SC, ST, OBC-NCL, or EWS categories.

• The certificate must be issued by a competent authority.

• OBC candidates must ensure the certificate clearly mentions Non-Creamy Layer (NCL) status.

• Certificates should be valid as per the guidelines mentioned in the IISER 2026 notification.

7. PwD Certificate (If Applicable)

• Candidates applying under the Persons with Disabilities (PwD) category must upload a valid disability certificate.

• The certificate should mention the percentage of disability as per government norms.

8. Debit/Credit Card or Net Banking Details

Although not a document, candidates must keep payment details ready for online fee payment, such as:

• Debit Card

• Credit Card

• Net Banking

• UPI (if enabled)

Also Read: How to Fill IISER 2026 Application Form

IISER 2026 Registration Form: Document Size and Dimensions

Based on the document requirements, here is a table of the specifications for the photograph, signature, and caste certificate.

IISER Application Form 2026: How to Resize Documents

Candidates can check out the steps mentioned below for resizing the documents required for the IAT 2026 application form:

• Use Online Resize Tools:
  Candidates can search for the free online image/document resize in their web browser and choose for online tool that allows them to adjust the file dimensions and size. Now candidates will be required to upload their scanned documents and then set them to the required size range.

• Adjust Image Dimensions:
  For candidates who want to upload the photos and signatures, some resize tools let you set pixel dimensions (e.g., 200×230 px for photos). One can crop and resize manually to match NTA’s required pixel size and reduce file size.

• Compress File Size:
  If candidates find that their scanned file is larger than the allowed limit, then use a “file size compressor” tool online.

• Convert File Formats:
  When candidates are uploading files like ID or Disability certificates, they need to convert their JPG files to a PDF file. If needed, use a file converter search online to change formats to those accepted by CUET (like JPG/JPEG or PDF).

How to fill IISER 2026 Application Form?

In order to fill out the IAT 2026 application form, candidates need to follow the steps mentioned below:

1. First, candidates are required to visit the official website.

2. Create a registered account to fill out the application form.

3. After logging in to the registered account, candidates are required to fill in details such as educational information, family details, address, exam city preference, courses applied for, and other required information.

4. Upload the required documents as asked by NTA on the application portal.

5. Pay the IAT 2026 application fee.

6. Take a printout of the IISER 2026 application form or save it as a PDF for future reference.

IISER Exam 2026 Test Series Launched

The SciaAstra team has recently launched a FOCUS test series, which will emphasise Full Online Controlled Understanding and Simulation, helping candidates experience the real-time environment of the IISER aptitude test 2026.

The IAT 2026 FOCUS mock test is designed based on the official exam pattern, and the difficulty level is determined through an in-depth analysis of previous years’ question papers. Candidates will get Unit-wise, Half-length, and Full-length test series, covering all chapters to assess their domain understanding, cognitive skills, and analytical abilities as per the IISER 2026 syllabus.

Attempt the IISER Exam 2026 Test Series to check your exam preparation level to get admissions to the IISERs, IISc and IIT Madras here:

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