IAT 2025

Yes. Candidates should have been born on or after October 01, 2000. Five years of age relaxation is given to SC, ST, and PwD candidates, i.e, these candidates should have been born on or after October 01, 1995.

No. There is no restriction in appearing in IAT 2025 based on the completion year of Class XII. The eligibility criteria for appearing in IAT 2025 is based on only the age limit (FAQ A.Q1 above).

Any student who has qualiﬁed Class XII (or equivalent) examination in science stream can apply to the B. Tech. (four year) degree) / BS (four year) degree / BS-MS (five year) dual degree programs in IISERs provided the eligibility criteria are satisfied. At present, the BS in Economic Sciences program and B. Tech. programs are available only at IISER Bhopal, the BS in Economic and Statistical Sciences program is available only at IISER Tirupati and BS-MS in Computational and Data Sciences program is available only at IISER Kolkata. Also, for applying to any of the BS/B. Tech. degree programs and for applying to BS-MS in Computational and Data Sciences degree program, candidates must have Mathematics as one of the subjects in Class XII (or equivalent) examination. Please click here to know more about the eligibility criteria.

Yes. You must produce the result of the qualifying examination (Class XII or equivalent) when the portal opens to upload documents for counselling (post the declaration of IAT 2025 results). Failing this, you will not be considered for counselling.

Yes, you can.

Yes, you can apply. Please click here for the details.

Yes. Candidates who are not citizens of India AND do not hold OCI/PIO cards shall be considered foreign nationals. Such candidates, if eligible to appear for IAT 2025, may contact the Chairperson, Joint Admissions Committee at ask2025@jac.iisertirupati.ac.in with the email subject line "Foreign National - Application for IAT 2025".

The candidates belonging to SC/ST/PwD are required to score a minimum of 55% marks in aggregate or equivalent grade in their Class XII (or equivalent) examination. Candidates belonging to other categories are required to score a minimum of 60% marks in aggregate or equivalent grade in their Class XII (or equivalent) examination. Note that, the percentage needs to be calculated using aggregate marks, that is, the sum of the marks obtained in ALL the subjects taken in class XII (or equivalent) level. Please click here for more details.

Yes, you can. You must have at least one of the two subjects, Biology/Mathematics in the Class XII (or equivalent) level. Note that the questions in the IAT will be from Biology, Chemistry, Mathematics and Physics with equal weightage. There are no subject specific cut-off marks, though. For admissions to B. Tech. at IISER Bhopal / BS (Economic Sciences) at IISER Bhopal / BS (Economic and Statistical Sciences) at IISER Tirupati / BS-MS (Computational and Data Sciences) at IISER Kolkata, having Mathematics in Class XII (or equivalent) is mandatory.

No, it is not mandatory for regular BS-MS (5 year) dual degree programs. However, for admissions to B. Tech. at IISER Bhopal / BS (Economic Sciences) at IISER Bhopal / BS (Economic and Statistical Sciences) at IISER Tirupati / BS-MS (Computational and Data Sciences) at IISER Kolkata, having Mathematics in Class XII (or equivalent) is mandatory.

No. All admissions are carried out centrally. IISERs admit students through a common application process and all candidates will be admitted through the IISER Aptitude Test (IAT) 2025. One application form submitted through the application portal is valid for all the IISERs.

You can apply only through the online admission portal. Please click here for details.

Yes. The application fee is Rs. 2000/- for candidates applying under General, EWS, OBC, and OBC-NCL categories and is Rs. 1,000/- for candidates applying under persons with disabilities (PwD), persons registered as Kashmiri Migrants (KM) and SC/ST category. The application fee is non-refundable and must be paid during the submission of the application form, which starts from March 05, 2025.

No. All payments will be accepted only through a secure online payment gateway on the application portal.

You must send your proof of payments to ask2025@jac.iisertirupati.ac.in with the subject line as "Problem with application fee". We will check and refund one of the payments if duplicate payments are made. Please wait for 7-10 working days and write back to us if it is not resolved.

Immediately notify through email to ask2025@jac.iisertirupati.ac.in with the subject line as "Problem with application fee", else your application may stand cancelled. You must clearly mention the issues faced by you during the payment process.

Please refer to FAQ A.Q4.

No. It is not required during the filling up of the application form for appearing in the IAT 2025. You will be asked for your preferences of IISERs in the online application form during counselling, if eligible. This is required to be done only after the declaration of the IAT 2025 results.

You need to upload your original mark sheet in the application portal but the percentage in the application form should be the revised one. The revised marks statement from your board conﬁrming the change of marks must be sent to ask2025@jac.iisertirupati.ac.in with a subject line “Revised Marks”. You should also mention your application number in the subject line. Click here for the timeline. Please note if the subject line is not as mentioned above, we may not be able to help you.

Once you have submitted your application, you will be allowed some windows at specified times where you can edit some information on your application. Please click here for the details of the time windows. You will NOT be able to edit category (General/OBC-NCL/SC/ST/PwD/KM) information after submitting the application.

Your application is not complete until you can download the pdf version of the filled application form after you make the payment (application fee as applicable). In case you experience any issue in downloading your application form, please write an email to ask2025@jac.iisertirupati.ac.in with a subject line “Problem with Application download”.

OBC-NCL stands for Other Backward Classes (Non-Creamy Layer). If you belong to this category, then you must select OBC-NCL as your category. Candidates belonging to this category must upload an OBC-NCL certificate, which should be valid for the financial year 2025-26 and issued on or after 1st April, 2025.

EWS stands for the Economically Weaker Sections. It applies to those candidates who satisfy the criteria of income and assets as laid out by the Govt. of India. Candidates belonging to this category must upload an EWS certificate, which should be valid for the financial year 2025-26 and issued on or after 1st April, 2025.

If you are already in possession of valid (see B.Q.12, 13 above) OBC-NCL/EWS certificates, you may submit/upload it during the application process. Otherwise, you need to upload the certificate on or before 16th June, 2025.

As Aadhar contains sensitive information, we are not collecting the same. You are requested to choose any other ID from the given options.

No. All payments will be accepted only through a secure online payment gateway on the application portal.

You must send your proof of payment by email to ask2025@jac.iisertirupati.ac.in with the subject line as "Problem with application fee". We will check and refund one of the payments if duplicate payments are made. Please wait for 7-10 working days and write back to us if it is not resolved.

Immediately notify through email to ask2025@jac.iisertirupati.ac.in with the subject line as "Problem with application fee", else your application may stand cancelled. You must clearly mention the issues faced by you during the payment process.

If you have been allotted to one of the IISERs, you need to pay the Seat Acceptance Fee (within the due date) through the counselling portal in order to accept the oﬀer and conﬁrm that you intend to join one of the IISERs to which you are allotted to. The details of the Seat Acceptance Fee amounts can be found here.

Yes. Withdrawal is possible ONLY through the counselling portal. You can withdraw by the stipulated date. Please click here for more details.

No.

The overall fee structure at various IISERs is diﬀerent. You may have to pay an additional amount after joining a particular IISER. Fee details will be provided in the oﬀer letter. For more details, please visit the webpage of the respective IISER.

No.

Yes. You must send your proof of payments to ask2025@jac.iisertirupati.ac.in with the subject line as "Problem with application fee". We will check and refund one of the payments if duplicate payments are made. Please wait for 7-10 working days and write back to us if it is not resolved.

If the payment was unsuccessful, the amount will be refunded and the same should reflect in your account in the next 3 days. If it does not, please write to us at: ask2025@jac.iisertirupati.ac.in with all the necessary details.

The IISER Aptitude Test 2025 will be conducted in the computer-based test mode. The mock test is available on the website.

The syllabus for the aptitude test is available here.

The format of the IISER Aptitude Test is available here.

Questions from previous examinations are available here.

Yes, you can. You must have at least one of the two subjects, Biology/Mathematics in the Class XII (or equivalent) level. Note that the questions in the IAT will be from Biology, Chemistry, Mathematics and Physics with equal weightage. There are no subject specific cut-off marks, though. Note that, for admissions to B. Tech. at IISER Bhopal / BS (Economic Sciences) at IISER Bhopal / BS (Economic and Statistical Sciences) at IISER Tirupati / BS-MS (Computational and Data Sciences) at IISER Kolkata, having Mathematics as a subject in Class XII (or equivalent) is mandatory.

The computer-based test will be available in Hindi and English.

It will be conducted in various cities across India. Choices for eight preferred centres where the candidate wishes to write the aptitude test have to be indicated while completing the online application form. The hall ticket will have the allotted centre details printed. If the examination cannot be conducted in any of the centres due to unforeseen reasons, the candidate would be allotted an alternate centre, and such information will be communicated in due course.

The hall ticket will be available on the website a few days before the IISER Aptitude Test (IAT 2025). The candidates can download their hall ticket after logging into their account in the application portal. The detailed information about the dates can be found here

It is not mandatory for regular BS-MS (5 year) dual degree programs. However, having Mathematics in Class XII (or equivalent) is mandatory for admissions to the B. Tech. at IISER Bhopal / BS (Economic Sciences) at IISER Bhopal / BS (Economic and Statistical Sciences) at IISER Tirupati / BS-MS (Computational and Data Sciences) at IISER Kolkata.

No. The maximum marks in IAT is 240 (60 marks for each of the four sections). The total marks obtained out of 240 is considered for preparing the Rank List.

No.

You must send your proof of payments to ask2025@jac.iisertirupati.ac.in with the subject line as "Problem with application fee". We will check and refund one of the payments if duplicate payments are made. Please wait for 7-10 working days and write back to us if it is not resolved.

The tentative total number of seats available for the 5-Year BS-MS (Dual Degree) and 4-Year B. Tech. / BS Degree Programs across all IISERs is 2363. Please click here for the details.

Currently, IISER Bhopal offers the 4-Year B. Tech. and BS (Economic Sciences) degree program and IISER Tirupati offers 4-year BS (Economic and Statistical Sciences) degree program. The tentative total number of seats available for B. Tech. program is 140, for BS (Economic Sciences) program is 35 and for BS (Economic and Statistical Sciences) program is 50. Please click here for the details.

The tentative total number of seats available for BS-MS in Computational and Data Sciences program at IISER Kolkata is 30 for the Academic Year 2025-2026. Please click here for the details.

There is a single channel available for admission into IISERs. All candidates will be admitted through the IISER Aptitude Test (IAT) 2025.

A seat matrix is available here.

No. Admission to IISERs is based on your rank in IAT 2025 and the total number of available seats in different IISERs.

The allotment is based on the availability of seats in various IISERs, your rank in IAT 2025 and your preferences.

Float option allows a candidate to be allotted an IISER/program that is higher on their preference list (if any) than the one allotted in the current round, in subsequent rounds (if any). During counselling, the ﬂoat option is enabled for all candidates who get an offer.

If you are satisﬁed with the IISER/program allotted to you in any round and do not wish to ﬂoat, you can freeze your oﬀer. Freeze option once exercised is ﬁnal and cannot be changed under any circumstances.

Yes. The reservation policies of the Govt. of India are applicable. It is summarised here.

Depending on your rank in IAT 2025 and availability of seats in the programs of your choice, you may be considered for allocation in a later round. You must periodically check the admission website for updates.

You must keep checking the admission website regularly for updates. It is the your responsibility to check the website for appropriate updates until it is declared on the website that the admissions for 2025 are over.

If you have been allotted to one of the IISERs, you need to pay the Seat Acceptance Fee (within the due date) through the counselling portal in order to accept the oﬀer and conﬁrm that you intend to join one of the IISERs. The details of the Seat Acceptance Fee amounts can be found here.

Yes. Withdrawal is possible ONLY through the counselling portal. You can withdraw by the stipulated date. Please click here for more details.

You must accept the oﬀer by paying the Seat Acceptance Fees, as mentioned in the oﬀer letter. Once you have accepted the oﬀer, you would be considered for "Float" in subsequent round(s) provided you have exercised the Float option. If there are vacancies and if you are eligible, you will be allotted to an IISER, which is higher in your preference list.

No.

The overall fee structure at various IISERs is diﬀerent. You may have to pay an additional amount after joining a particular IISER. For more details, please visit the webpage of the respective IISERs.

No. Inter-IISER transfer of students is NOT permitted and no requests to this effect will be considered.

Once you have paid the SAF, download your updated oﬀer letter again from the counselling portal. Your SAF payment details will appear on the last page of the updated oﬀer letter.

Once your SAF is paid, download your oﬀer letter again from the counselling portal. The new oﬀer letter should have the SAF payment details on the last page of the updated oﬀer letter. In case it does not appear, please verify whether your payment was successful or not. In case of any diﬃculties, please enquire by sending an email to ask2025@jac.iisertirupati.ac.in with the subject line “Issues related to SAF payment” clearly mentioning the transaction details, transaction ID, date, amount of payment made and any other relevant document.

No, it is not possible to select your past allotment.

All the IISERs offer five-year BS-MS dual degree. IISER Bhopal offers four-year B.Tech. degree and four-year BS in Economic Sciences degree. From 2025, IISER Tirupati introduces four-year BS in Economic and Statistical Sciences degree and IISER Kolkata introduces five-year BS-MS dual degree in Computational and Data Sciences.

Each IISER is an autonomous institution. Therefore, the degree is awarded by individual IISERs.

Currently, only IISER Bhopal awards the B. Tech. degree.

Currently, only IISER Bhopal awards the BS degree in Economic Sciences.

Currently, only IISER Tirupati awards the BS degree in Economic and Statistical Sciences.

Currently, only IISER Kolkata awards the BS-MS dual degree in Computational and Data Sciences.

From 2025, IISER Tirupati introduces four-year BS in Economic and Statistical Sciences program.

From 2025, IISER Kolkata introduces five-year BS-MS dual degree program in Computational and Data Sciences.

Students are trained in various disciplines of basic sciences as per the designed curriculum of the respective IISERs during the formative years. Subsequently, they can take up specialized subjects. Please refer to the websites of individual IISERs for a description of their curriculum structure.

IISER Bhopal offers B. Tech. degree program. Students are trained in various disciplines of basic sciences and introductory courses in Engineering during the first year of study. Subsequently, they take courses toward specialization in Engineering. Please visit the IISER Bhopal website for a description of the curriculum structure for the B. Tech. degree program.

IISER Bhopal offers BS degree program in Economic Sciences. Students are trained in various disciplines of basic sciences and introductory courses in Economics during the first year of study. Subsequently, they take courses toward specialization in Economics. Please visit the IISER Bhopal website for a description of the curriculum structure for the BS in Economic Sciences degree program.

IISER Tirupati offers BS degree program in Economic and Statistical Sciences. Students are trained in various disciplines of basic sciences and introductory courses in Economics and Statistics during the first year of study. Subsequently, they take courses toward specialization in Economics and Statistics. Please visit the IISER Tirupati website for a description of the curriculum structure for the BS in Economic and Statistical Sciences degree program.

Please click here for the details.

Yes. The final year of BS-MS will have mandatory research component leading to a masters thesis.

The overall fee structure for individual IISERs is diﬀerent. Please visit the websites of individual IISERs for information about their fee structure.

Students admitted will be eligible for a limited number of INSPIRE scholarships as per the norms of the Department of Science and Technology, Govt. of India.

No. IISERs are fully residential campuses and students are required to stay in campus hostels.

Students may only choose their department after joining an IISER (Exceptions: Economic Sciences at IISER Bhopal, B. Tech. at IISER Bhopal, Economic and Statistical Sciences at IISER Tirupati and Computational and Data Sciences at IISER Kolkata). Individual IISERs have their own rules and regulations regarding department allocation. Please have a look at their websites for details.

Yes. It is allowed, however allotment policy is different for different IISERs.

The course curicula differ in individual IISERs. A major subject is allotted from either second or third year based on the academic program of individual IISERs. Individual IISERs have their own rules and regulations regarding major allocation. Please have a look at their websites for details.

A candidate who is not a citizen of India AND does not hold an OCI/PIO card shall be considered a foreign national.

You are eligible to appear if you either possess an equivalence certificate issued by the Association of Indian Universities or you have passed the Class XII or an equivalent level examination from any board recognized by the Council of Boards of School Education (COBSE) in India., subject to the fulfillment other criteria.

Yes. The IAT 2025 will be conducted in different cities accross India only.

The application fee is INR 12,000.

The equivalence certificate must be uploaded while submitting the IAT 2025 Application Form under "Please upload a copy of document supporting your claim of Foreign National (You will need to produce original when necessary)" field.

Frequently Asked Questions

A. Eligibility Criteria

B. Application Process

C. Payment Related

D. IAT 2025

E. Admission Process

F. IISER Programs, Curricula, and Policies

G. OCI / PIO / Foreign Candidates

A. Eligibility Criteria

Q1. Is there any age limit for appearing in IAT 2025 ?

Q2. Does the eligibility for appearing in IAT 2025 depend on the completion year of Class XII ?

Q3. I am a Class XII science student. To which programs can I apply in IISERs ?

Q4. My Class XII results are still awaited. Can I apply ?

Q5. I am a Class XII science student of an international board studying in India. Can I apply ?

Q6. I am a PIO/OCI card holder. Can I apply ?

Q7. I am not an Indian citizen and I do not hold PIO/OCI card. Can I apply ?

Q8. What is the required percentage/cut off marks in Class XII (or equivalent) examination for getting admission to IISERs ?

Q9. I have not studied Biology/Mathematics at Class XII level. Can I take the test ?

Q10. Is Mathematics at Class XII level mandatory to take admission in IISERs ?

B. Application Process

Q1. Do I need to apply separately for different IISERs ?

Q2. How can I apply for getting admission in IISERs ?

Q3. Is there any application fee ?

Q4. Can I pay application fees by Cash/DD/Cheque ?

Q5. What should I do if I have paid the application fees more than once for a single application ?

Q6. What should I do if I have already paid the application fees, but the payment has been reversed ?

Q7. Can I apply for IISER Aptitude Test if my Class XII exam result is awaited ?

Q8. Do I need to indicate my choice of IISER while applying to appear in IAT 2025 ?

Q9. My percentage marks have changed after scrutiny/revaluation. I have two sets of marks related documents (instead of only one otherwise). What should I do ?

Q10. I have submitted my application form. However, some information on the final form is either missing or incorrect. What should I do ?

Q11. I have paid the application fees. Is my application complete ?

Q12. What is OBC-NCL category and what supporting documents are required for this category ?

Q13. What is EWS category and what supporting documents are required for this category ?

Q14. When and where should I upload/submit my OBC-NCL/EWS certificates ?

Q15. Can the UID Aadhar be provided as an ID proof for the IAT application process ?

C. Payment Related

Q1. Can I pay application fees by Cash/DD/Cheque ?

Q2. What should I do if I have paid the application fees more than once for a single application ?

Q3. What should I do if I have already paid the application fees, but the payment has been reversed ?

Q4. What is Seat Acceptance Fee (SAF) ?

Q5. Can I withdraw my application after the payment of the Seat Acceptance Fee ?

Q6. I have paid the Seat Acceptance Fees as mentioned in my oﬀer letter. In the subsequent round, I have been allocated to another IISER. Do I have to pay the Seat Acceptance Fees again ?

Q7. I have paid the Seat Acceptance Fees as mentioned in the oﬀer letter. Do I have to pay anything else ?

Q8. I have registered and paid the application fee for IAT. But I will not attend the exam. Can I get refund for the application fee paid ?

Q9. I have registered and paid the fee for IAT. Due to technical error, I have paid the fee twice. Can I get refund ?

Q10. I have made the payment towards the ‘Application/SAF’ fees and the amount has been debited from my account. However, my payment status is still showing ‘pending/unsuccessful’. Will my payment be refunded to my account ?

D. IAT 2025

Q1. What is the mode of the IISER Aptitude Test 2025 ?

Q2. What is the syllabus for the IISER Aptitude Test ?

Q3. What is the format of the IISER Aptitude Test (IAT) ?

Q4. Can I have model questions for the IISER Aptitude Test (IAT) ?

Q5. I have not studied Biology/Mathematics at Class XII level. Can I take the test ?

Q6. In what languages will the IISER Aptitude Test (IAT) be conducted ?

Q7. Where is the IISER Aptitude Test (IAT) conducted ?

Q8. Where/When do I get the hall ticket for the IISER Aptitude Test ?

Q9. Is Mathematics at Class XII level mandatory to take admission in IISERs ?

Q10. Will my IAT score be based on my performance in best 3 out of 4 subjects (Biology, Chemistry, Mathematics, Physics) ?

Q11. I have registered and paid the application fee for IAT. But I will not attend the exam. Can I get refund for the application fee paid ?

Q12. I have registered and paid the fee for IAT. Due to technical error, I have paid the fee twice. Can I get refund ?

E. Admission Process

Q1. How many seats are available for the admission to the BS-MS dual degree and B. Tech. / BS programs in 2025 ?

Q2. How many seats are available for the admission to the B. Tech. / BS degree programs in 2025 ?

Q3. How many seats are available for the admission to the BS-MS in Computational and Data Sciences program at IISER Kolkata in 2025 ?

Q4. How do I get admission to IISERs? What are the channels available for admission to IISERs ?

Q5. What is the intake by various IISERs ?

Q6. Do all candidates, who are eligible to apply, get offers for admission to IISERs ?

Q7. Will I get admission to the IISER of my choice ?

Q8. Will I get admission to BS-MS/ B. Tech. / BS degree program of my choice ?

Q9. What is ‘Float’ option ?

Q10. What is ‘Freeze’ option ?

Q11. Does reservation policy apply for admission ?

Q12. I have not been oﬀered admission in the current round. Will I be considered for allocation in a later round ?

Q13. How will I know if a new round of allotment/ﬂoat round is opened ?

Q14. What is Seat Acceptance Fee (SAF) ?

Q15. Can I withdraw my application after the payment of the Seat Acceptance Fee ?

Q16. I have been oﬀered admission to one of the IISERs. However, this is not my ﬁrst choice. Will there be a next round in which I would be offered the IISER that is my ﬁrst choice ?

Q17. I have paid the Seat Acceptance Fees as mentioned in my oﬀer letter. In the subsequent round, I have been allocated to another IISER. Do I have to pay the Seat Acceptance Fees again ?

Q18. I have paid the Seat Acceptance Fees as mentioned in the oﬀer letter. Do I have to pay anything else ?

Q19. Can I transfer my admission from one IISER to another at any time ?

Q20. How do I check if my Seat Acceptance Fees (SAF) payment has been successful ?

Q21. What happens if my Seat Acceptance Fees (SAF) payment details do not appear in my oﬀer letter ?

Q22. I was allotted an IISER in my first round (which was my lower preference) and another IISER in a subsequent round (which was my higher preference). Can I choose my initial IISER again if I have changed my mind after the allocation ?

F. IISER Programs, Curricula, and Policies

Q1. What are the degrees awarded in IISERs ?

Q2. Who awards the B. Tech. / BS / BS-MS degree ?

Q3. Who awards the B. Tech. degree ?

Q4. Who awards the BS degree in Economic Sciences ?

Q5. Who awards the BS degree in Economic and Statistical Sciences ?