IISER 2025 seat allotment list was released on the official website on July 21, 2025. The exam officials mention the IAT 2025 Round 1 opening and closing ranks for various categories like GEN, OBC, SC/ST, PwD and KM. Candidates who have their AIR ranks mentioned in the IISER 2025 Round 1 rank list can accept the seat and submit the SAF in the time window from July 21, 2025 to July 26, 2025.
Check out the complete IISER 2025 seat allotment process, round 1 seat allotment dates, opening and closing ranks, and expected cutoff here in this SciAstra article.
What is IISER 2025 Seat Allotment List?
IISER seat allotment list 2025 stipulates the rank range in the form of opening and closing ranks for the courses offered based on the seat intake. Here candidates must note that based on the seats that remain vacant, the exam-conducting authority releases multiple rounds of IISER 225 seat allotment lists.
The IISER 2025 opening and closing ranks of each participating institute of IAT 2025 will vary. Also, the conducting authority will release the IAT 2025 seat allotment list category-wise.
IISER 2025 Seat Allotment Process
Candidates can understand the complete IAT seat allotment process from below:
- Registering for IISER 2025 Counselling Process: In order to get admissions in the courses offered at IISERs, the test takers need to fill out the IISER 2025 counselling registration form.
- Fill out IISER 2025 Academic Programme Preference Form: While making registrations, candidates have to make their course, which they want to pursue, and IISER institute choices. Candidates need to choose among 11 academic programmes across 7 IISER institutes from the drop-down menu.
- Release of IISER 2025 seat allotment list: Based on the seats available at IISERs, the courses offered at these institutes, and the number of registrations made during the counselling process, the exam officials will release the Round 1 IISER 2025 seat allotment list.
- Accept/ Float/ Reject the allotted seat: If a candidate is offered a seat, then he/she will have two options:
- When a candidate receives an admission offer from the exam authority, then he/she can either choose to accept the seat OR reject it by not taking any further action.
- If a candidate wishes to take admission against the offered seat, then they have to either Accept & Float or to Accept & Freeze.
- Pay the Seat Acceptance Fees (SAF): When a candidate is made an offer for the seat allotment, then they need to pay a IAT 2025 seat acceptance fees. The SAF will be paod by the candidates as per the category of the student applied during the registration process.
IISER 2025 Seat Acceptance Fees
When a candidate is offered a seat by the exam authority during the counselling process, they are given an opportunity to accept or float the seat. In order to do so, one needs to pay the IAT 2025 seat acceptance fees. Check out the details from here:
| Category | Fees |
| General/EWS/OBC/OBC-NCL/PwD/KM/Kashmiri Pandit/Kashmiri Hindu Families (Non-Migrants) | INR 35,000/- (INR 25,000/- + INR 10,000/- (Non-refundable administrative fee) |
| SC/ST Categories | INR 17,500/- (INR 12,500/- + INR 5000/- (Non-refundable administrative fee) |
IISER 2025 Seat Allotment List Dates (OUT)
IISER 2025 online counselling registration process is over. The last date for filling out the counselling registration form was July 7, 2025. The exam officials have announced IISER 2025 seat allotment list dates. Candidates can check out the schedule of IAT 2025 seat allotment dates from here:
| Event Name | Date |
| IISER 2025 First Admission List | July 21, 2025 |
| Choice-making last & SAF last day | July 21, 2025- July 26, 2025 (5 PM) |
| IISER 2025 Second Admission List | August 1, 2025 |
| Choice-making last & SAF last day | August 1, 2025- August 5, 2025 (5 PM) |
| IISER 2025 Third Admission List | August 8, 2025 |
| Choice-making last & SAF last day | August 8, 2025- August 12, 2025 (5 PM) |
| IISER 2025 Fourth Admission List | August 16, 2025 |
| Choice-making last & SAF last day | August 16, 2025- August 19, 2025 (5 PM) |
When is IISER 2025 Round 1 Seat Allotment Releasing?
Candidates can now check out the IAT 2025 Round 1 seat allotment list. The exam officials has released the IISER 2025 Round 1 seat allotment list on July 21, 2025 on the official website. Test takers whose AIR ranks lying in the mentioned courses offered by the seven IISER institutes will be able to make their choices against the allocated seat from July 21, 2025 to July 26, 2025 till 5PM.
IISER 2025 Opening and Closing Ranks (Round 1)
The IAT 2025 seat allotment list consists of opening and closing ranks for all 7 IISER participating institutes. The exam officials will be releasing the IISER 2025 opening and closing ranks category-wise. Candidates whose AIR/Category rank lies on the released list will have to accept/reject or float the seat.
The exam officials will be releasing the IAT 2025 opening and closing ranks in multiple rounds. The round 1 IISER 2025 opening and closing ranks were released on July 21, 2025.
Check out the rank list
| Category | P1 | P2 | P3 | P4 | P5 | P6 | P7 | P8 | P9 | P10 | P11 |
| Unreserved (GEN, OBC) | 3299 | 2015 | 935 | 1778 | 355 | 2381 | 2990 | 974 | 1636 | 498 | 2324 |
| OBC-NCL | 2080 | 1325 | 891 | 1358 | 404 | 1563 | 1880 | 604 | 851 | 417 | 1529 |
| SC | 856 | 555 | 292 | 520 | 167 | 665 | 812 | 355 | 609 | 169 | 800 |
| EWS | 767 | 465 | 341 | 480 | 143 | 576 | 718 | 158 | 246 | 106 | 446 |
| ST | 409 | 264 | 191 | 263 | 65 | 338 | 393 | 115 | 189 | 124 | 313 |
| Unreserved PwD | 58118 | 31547 | 44127 | 50112 | 10526 | 53859 | 60050 | 35747 | 50106 | 967 | 27004 |
| OBC-NCL PwD | 29183 | 23669 | 20784 | 23209 | 8735 | 24716 | 27439 | 3132 | 29841 | 23780 | 26865 |
| SC PwD | 9247 | 10976 | 8626 | 12900 | 3775 | 13788 | 13814 | 2116 | 3594 | 8432 | 8502 |
| EWS PwD | -- | -- | 9505 | -- | 7606 | -- | 3563 | 4854 | -- | 243 | 7674 |
| ST PwD | -- | -- | 447 | -- | -- | -- | -- | -- | -- | -- | -- |
| KM (Kashmiri Migrants) | 21570 | 16933 | 16200 | 10106 | 6037 | 17974 | 19610 | 16708 | 20237 | 17341 | 25127 |
IISER Academic Programme Name Abbreviations
| Name of IISER Academic Programme | Abbreviation |
| IISER Berhampur (BS-MS) | P1 |
| IISER Bhopal (BS-MS) | P2 |
| IISER Kolkata (BS-MS) | P3 |
| IISER Mohali (BS-MS) | P4 |
| IISER Pune (BS-MS) | P5 |
| IISER Thiruvananthapuram (BS-MS) | P6 |
| IISER Tirupati (BS-MS) | P7 |
| IISER Bhopal (B. Tech.) | P8 |
| IISER Bhopal (BS in Economic Sciences) | P9 |
| IISER Kolkata (BS-MS in Computational and Data Sciences) | P10 |
| IISER Tirupati (BS in Economic and Statistical Sciences) | P11 |
IISER 2024 Opening and Closing Ranks
Check out the IAT 2024 opening and closing rank details from here:
| IISER 2025 Opening and Closing Ranks (Tentative) | |||
| Institute Name | GEN | OBC | SC |
| IISc Bangalore | 1-20 | 5-35 | 15-75 |
| IIT Madras | 10-35 | 10-50 | 25-220 |
| IISER Pune | 10-717 | 15-371 | 35-266 |
| IISER Mohali | 100 -2229 | 1332 | 55-550 |
| IISER Trivandrum | 200 -2965 | 50-1241 | 60-681 |
| IISER Tirupati | 300-3470 | 70-1461 | 80-738 |
| IISER Berhampur | 400 -3576 | 80-1634 | 100-739 |
| IISER Bhopal | 150 -2609 | 65-1305 | 45-600 |
| Kolkata | 50 -1801 | 30-817 | 50-364 |
IISER 2025 Expected Cutoff
The exam officials have not released any IISER 2025 cut off so far. In like manner of the responses and information received by the test takers about their IISER 2025 rank card, the below-mentioned can be the expected IISER 2025 cutoff.
| Institute Name | General | OBC | SC |
| IISER Pune | 150-160 | 120-130 | 115-125 |
| IISER Bhopal | 140-150 | 130-140 | 120-130 |
| IISER Kolkata | 145-155 | 130-140 | 110-120 |
| IISER Mohali | 120-130 | 110-120 | 95-110 |
| IISER Tirupati | 110-120 | 100-110 | 85-105 |
| IISER Berhampur | 90-100 | 80-90 | 70-80 |
| IISER Trivandrum | 100-110 | 90-100 | 75-85 |
Conclusion
IAT 2025 counselling process provides admission to the five year BS-MS, four-year BS degree, and BTech degree programmes offered by the seven IISER participating institutes. Candidates who had taken the IISER 2025 exam and who had gotten the AIR/Category rank will get the opportunity to participate in the counselling process. Based on the registrations made and the number of seats available, the IAT 2025 opening and closing ranks will be released category-wise.
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