Combined Defence Services Examination
CDS is the graduate-entry gateway to permanent commission via IMA, INA and AFA, and short service commission via OTA Chennai.
| Age limit | 19 – 25 years |
|---|---|
| Gender | Men & Women (OTA for both; IMA/INA/AFA men) |
| Qualification | Graduate (any stream for IMA/OTA; Engineering for INA; Physics & Maths at 12th or BE for AFA) |
| Selection process | Written (English, GK, Maths — Maths not for OTA) → SSB → Medical |
| Notification | December / May |
| Pay / stipend | Lt / Sub Lt / Flying Officer — Level 10 (₹56,100 basic + MSP ₹15,500) |
| Official website | upsc.gov.in |
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Preparation tips
- Choose academy preferences carefully — age limits differ: IMA 20-24, INA 20-24, AFA 20-24, OTA 19-25.
- OTA has no Maths paper; graduates from humanities routinely clear it.
- Final merit combines written + SSB, so both matter equally.
Frequently asked
What is the age limit for CDS?
19 to 25 years, calculated as on the date specified in the notification (usually the first day of the month the course commences).
Is there negative marking?
Most UPSC and service-conducted objective papers carry one-third negative marking; check the specific notification.
How many attempts are allowed?
There is no attempt limit — only the age band applies.
Dates shown are indicative based on past cycles. Always confirm with the official notification before applying.