CDS and AFCAT After IITM BS: Defence Officer Entries to Check

It depends on the entry. In the Combined Defence Services (CDS) exam, the Indian Military Academy (IMA) and Officers' Training Academy (OTA) ask for a degree from a recognised university or equivalent. The Naval Academy, the Air Force Academy and most Air Force Common Admission Test (AFCAT) branches add more. They ask for named subjects, Physics and Maths at Class 12, or an engineering degree. IIT Madras says its BS meets any selection process that accepts a BS degree, but UPSC and the Indian Air Force make the final call. Check the current notice and ask them in writing if you are unsure.

What the CDS notice asks for

These lines are from the UPSC notice for CDS (II) 2026, published on 20 May 2026, with the exam on 13 September 2026. Later notices may change these rules.

Other points in the notice:

• Final-year degree students may apply. They must show proof of passing by fixed dates. These are 1 July 2027 for IMA and the Naval Academy, 13 May 2027 for the Air Force Academy, and 1 October 2027 for OTA.
• Age limits are tight. IMA and the Naval Academy take unmarried men aged 19 to 24. OTA takes unmarried men and women aged 19 to 25, with some conditions for women. The Air Force Academy takes candidates aged 20 to 24.
• In exceptional cases, UPSC may treat a candidate without the listed degree as qualified, if it judges the standard enough.

What the AFCAT notice asks for

These lines are from the AFCAT 02/2026 notification, for courses starting in July 2027. Applications ran from 20 May to 19 June 2026, and the exam was on 8 August 2026.

The Accounts, Education and Meteorology branches ask for commerce or finance degrees, a postgraduate degree, or science or engineering subjects.

Three notes in the notice matter for IITM BS students:

• Class 12 in the 10+2 pattern. Only candidates who passed Class 12 in the 10+2 pattern can apply.
• CGPA conversion. Your university's conversion method is used. IIT Madras's Senate formula is percentage = CGPA x 10. See CGPA to percentage.
• Final-year applicants. You may apply before your degree is complete if you have no pending backlog when you apply, with proof of completion by 30 May 2027.

What this means for IITM BS students

• The degree question. The notices say "recognised university". IIT Madras is an institute set up under an Act of Parliament. Its ES FAQ says any degree granted by an IIT is recognised as a legal degree. Its support desk says the BS meets any selection process that accepts a BS degree. UPSC and the Air Force still decide.
• Class 12 subjects. The Data Science programme admits students from any stream. If you did not study Physics and Maths in Class 12, you do not meet the Class 12 rule of the entries that ask for them, whatever your degree. Electronic Systems needs Physics and Maths in Class 12, but also admits 3-year diploma holders. Diploma holders should check the 10+2 pattern note.
• Only degrees count. The Foundation certificate and the Diplomas are not degrees. You need the BSc exit (Data Science) or the full BS.
• Timing. The IITM BS runs in terms, with no single final-year exam. A certificate needs at least 9 terms for a BSc and 12 for a BS, and the original comes after the exit form and a Senate meeting. Match your last term to the proof dates above. See exit and certificate timelines.
• Backlogs. IIT Madras does not issue backlog certificates. Your grade card is the record to show. See grade cards and backlogs.

Common questions

Can Data Science BS students write the CDS exam?

For IMA and OTA, the notice asks for a degree of a recognised university or equivalent, with no subject named. IIT Madras says its BS meets any selection process that accepts a BS degree. UPSC decides, so if you are unsure, write to UPSC before you apply.

Is the 3-year DS BSc enough for AFCAT?

Some AFCAT branches ask for a degree of at least three years in any discipline. The DS BSc is a degree from IIT Madras, but whether the Air Force accepts it is the Air Force's decision. Ask before you apply.

Can I apply while I am still studying the IITM BS?

Both notices let final-year students apply, with proof of passing by a set date. Since the IITM BS has no fixed final year, count the terms you have left and make sure you can finish before those dates.

Where can I read about other government exams?

Our guide on UPSC, SSC and bank exams covers the general rule and the documents to keep ready.