IISER IAT Counselling 2026: Registration from July 2, Choice Filling, Seat Allotment, Fees, Documents & Complete Admission Process

The IISER Aptitude Test (IAT) 2026 results have been declared, and qualified candidates can now prepare for the next crucial stage—the IISER IAT Counselling 2026. The online counselling registration and choice filling process will begin on July 2, 2026, through the official IISER Admissions Portal.

Candidates must complete registration, submit their campus preferences, and lock their choices before July 9, 2026. Seat allotment will be conducted based on the candidate’s IAT All India Rank (AIR), category, reservation norms, and preferred IISER campuses.

This article provides complete details regarding the IISER IAT Counselling 2026 schedule, registration process, seat allotment procedure, required documents, seat acceptance fee, withdrawal policy, participating institutes, and important instructions.

IISER IAT Counselling 2026 Important Dates

What is IISER IAT Counselling?

The IISER Admissions Portal conducts a centralized counselling process for admissions into the BS-MS Dual Degree programmes and selected four-year undergraduate programmes offered by the participating Indian Institutes of Science Education and Research (IISERs).

Seats are allotted according to:

• IAT 2026 All India Rank (AIR)
• Candidate’s category
• Reservation policy
• Campus preferences submitted during counselling
• Seat availability

IISER IAT Counselling Registration Process

Candidates can register online by following these steps:

Step 1: Login

Visit the official IISER Admissions Portal and log in using your:

• IAT User ID
• Password

Step 2: Complete Registration

Verify personal details and submit the counselling registration form.

Step 3: Choice Filling

Select your preferred IISER campuses and programmes in the order of preference.

You may choose among:

• IISER Pune
• IISER Kolkata
• IISER Mohali
• IISER Bhopal
• IISER Thiruvananthapuram
• IISER Tirupati
• IISER Berhampur

Candidates are advised to arrange their preferences carefully, as seat allotment depends heavily on the order of choices filled.

Step 4: Lock Choices

Review all selected preferences carefully before the deadline and lock your choices.

Once locked, no modifications will be allowed after the choice-filling window closes.

IISER IAT 2026 Seat Allotment Process

The Joint Admissions Committee will conduct multiple rounds of seat allotment.

Seat allocation depends on:

• All India Rank (AIR)
• Reservation category
• Availability of seats
• Candidate’s choice order

Candidates can download the allotment letter after each round through the admission portal.

Freeze and Float Options Explained

After receiving a seat, candidates must choose one of the following options:

Freeze

• Accept the allotted seat.
• Exit further counselling rounds.
• No further upgradation.

Float

• Accept the current seat.
• Continue participating in future rounds.
• Eligible for a higher preferred campus if a vacancy becomes available.

Choosing Float allows candidates to retain the currently allotted seat while remaining eligible for better preferences.

IISER IAT 2026 Seat Acceptance Fee (SAF)

Candidates allotted a seat must pay the Seat Acceptance Fee (SAF) within the specified deadline.

Important Notes

• The fee includes a non-refundable administrative component.
• The remaining amount is adjusted against the first-semester tuition fee after admission.
• Failure to pay the SAF within the deadline will lead to cancellation of the allotted seat.

Documents Required for IISER Counselling 2026

Candidates should keep scanned copies of the following documents ready:

• IAT 2026 Scorecard
• Rank Card
• Class 10 Marksheet
• Class 10 Passing Certificate
• Class 12 Marksheet
• Class 12 Passing Certificate
• Government-issued Photo Identity Proof
• Category Certificate (if applicable)
• OBC-NCL Certificate
• EWS Certificate
• SC/ST Certificate
• PwD Certificate (if applicable)
• Passport-size Photograph
• Signature

Ensure all uploaded documents are clear and in the prescribed format.

IISER Programmes Available Through IAT 2026

The counselling process covers admissions to several undergraduate programmes.

Five-Year BS-MS Dual Degree

Available across all participating IISER campuses.

Four-Year Undergraduate Programmes

IISER Bhopal

• B.Tech. in Data Science and Engineering
• B.Tech. in Electrical Engineering and Computer Science
• B.Tech. in Chemical Engineering
• BS in Economic Sciences

IISER Tirupati

• BS in Economic and Statistical Sciences

IISER Mohali

• BS-MS Programme with Major in Environmental Sciences

Participating Institutes

Admissions are conducted centrally for:

1. IISER Pune
2. IISER Kolkata
3. IISER Mohali
4. IISER Bhopal
5. IISER Thiruvananthapuram
6. IISER Tirupati
7. IISER Berhampur

Seat Withdrawal and Refund Policy

Candidates who decide not to continue with the allotted seat may withdraw according to the official schedule.

Withdrawal Before Deadline

• Eligible for refund as per admission rules.

Withdrawal Before Final Withdrawal Date

• Processing charges are deducted.
• Remaining amount is refunded.

Withdrawal After Final Deadline

• Refund requests are handled by the allotted institute as per institutional rules.

Candidates should carefully review the official withdrawal schedule before taking any decision.

Important Instructions for Candidates

• Register before July 9, 2026.
• Fill maximum possible campus preferences.
• Verify all personal and academic details before submission.
• Upload documents in the prescribed format.
• Pay the Seat Acceptance Fee immediately after allotment.
• Regularly check the admission portal for seat allotment updates.
• Keep your registered mobile number and email active throughout the admission process.

Admissions Beyond IISER Campuses

The centralized IISER counselling portal is meant only for admissions into participating IISER campuses.

Candidates seeking admission to:

• IISc Bengaluru (BS Research Programme)
• IIT Madras programmes accepting IAT scores

must separately apply through the respective institute’s admission portal, as these admissions are not conducted through the IISER counselling system.

Conclusion

The IISER IAT Counselling 2026 is the final step for candidates aspiring to secure admission into India’s premier science education institutes. With counselling registration beginning on July 2, 2026, candidates should complete registration, carefully fill their campus preferences, upload the required documents, and remain updated about the seat allotment schedule.

Timely registration, proper choice filling, and prompt payment of the Seat Acceptance Fee will ensure a smooth admission process into the desired IISER campus.