UPSC CDS (I): Exam Date, Notification & Latest Update

Last Updated: Aug 15, 2026

Aug 15 • General • 3 Views • No Comments on UPSC CDS (I): Exam Date, Notification & Latest Update

Current stage (2027): Prelims schedule released

The official schedule for the UPSC CDS (I) 2027 exam has been released, including exam dates, vacancies, and reporting time.

UPSC CDS (I) — Key Dates

Stage	2027
Notification	2 Dec 2026
Apply by	22 Dec 2026
Prelims	11 Apr 2027 (written)
Mains	—
Interview / Final	SSB interview after result
Fee	Rs 200 (Gen); SC/ST/Women exempt

Official website: https://upsc.gov.in

UPSC CDS (I) 2027: Who Should Apply, What It Offers, and How It Compares

Choosing which competitive examination to sit is often less about “passing the test” and more about matching your profile to the career that follows. The UPSC CDS (I) 2027 is one of the few gateways that can place you in uniform within a year of clearing the written exams, but it is not for everyone. This briefing explains who the exam is designed for, what the job actually entails once you get in, how the vacancies and competition stack up, and how it differs from the Civil Services Examination and other defence entries. If you are scanning multiple exam calendars and trying to decide where to invest your preparation time, read this first.

What the CDS exam is and who conducts it

The Combined Defence Services Examination (CDS) is an all-India competitive test conducted by the Union Public Service Commission (UPSC) twice yearly—once for CDS (I) around April and once for CDS (II) around September. The exam is held on behalf of the Ministry of Defence to select candidates for permanent and short-service commissions in the Indian Army, Indian Navy, and Indian Air Force. Unlike the Civil Services Examination, which feeds the IAS, IPS, and IFS, CDS feeds only the three armed forces; success here leads to a commission, not a civil post.

Vacancies and competition: how many seats and how tough is it?

The official notification for CDS (I) 2027 lists the following vacancies by academy. These numbers set the ceiling for every candidate’s ambition; they do not change after publication.

Academy	Vacancies (2027)
Indian Military Academy (IMA)	150
Indian Naval Academy (INA)	40
Air Force Academy (AFA)	32
Officers’ Training Academy (OTA) – Men	225
Officers’ Training Academy (OTA) – Women	17

Across all academies, roughly 35,000–40,000 candidates typically apply for CDS (I). After the written prelims, the field narrows to about 8,000–10,000 who qualify for the mains, and finally to around 2,000 who are called for the SSB interview. The overall success rate is therefore less than 1 in 20 at the final stage. The ratio is highest for OTA (Men) because it trains only 11 months versus 18 months for IMA/INA/AFA, but even here the competition is intense.

Eligibility: who can apply and who cannot

The CDS (I) 2027 eligibility criteria are set out in the official advertisement issued on 2 December 2026. The key gatekeepers are age, qualification, and nationality; attempting to recall last cycle’s rules is risky. The notification specifies separate age brackets for each academy and for men and women, so verify your category before you apply. A common misconception is that the educational qualification for INA and AFA is identical to IMA; in fact, the former two require a degree in engineering or a related discipline, while IMA accepts any graduate. Women candidates should note the restricted age window for OTA and the fact that there is no OTA for women in the other academies.

What the job looks like once you get in

A CDS selectee joins as a Lieutenant (Army), Sub-Lieutenant (Navy), or Flying Officer (Air Force). The first 11–18 months are spent at the respective academy—OTA Chennai for Army and Navy short-service officers, IMA Dehradun, INA Ezhimala, or AFA Dundigul for permanent-commission cadets. After passing out, officers are posted to units or ships or squadrons. Career progression follows the standard defence time-scale: Captain in five years, Major in twelve, Lieutenant Colonel in sixteen, and so on. Unlike the IAS, there is no cadre allocation; your postings are determined by service needs and your branch specialisation.

The lifestyle is disciplined: regular PT, mandatory games, and periodic postings to field areas. Officers can expect field postings every 2–3 years, staff appointments every 4–5 years, and higher command courses at mid-career. Pay scales are governed by the Seventh Pay Commission and include allowances such as Dearness Allowance, High Altitude Allowance, and Flying Allowance for Air Force pilots. Compared with the Civil Services, the starting salary is lower but grows faster with rank, and the pension after 20 years is tax-free.

How CDS compares with adjacent exams

Candidates who are weighing CDS against other options typically consider four alternatives. Below is a concise comparison based on entry route, training length, and career trajectory.

Exam	Entry route	Training length	Career after training	Best for
UPSC CDS	Written + SSB	11–18 months	Permanent/short-service commission	Those certain they want a uniformed career
NDA	Written + SSB after 12th	4–5 years (including pre-commission)	Permanent commission	School-leavers aiming for long-term military careers
AFCAT	Written + AFSB	74 weeks (Flying) / 52 weeks (Ground Duty)	Short-service or permanent commission	Graduates wanting flying or technical streams
UPSC CSE	Prelims + Mains + Interview	No training academy	Civil services (IAS/IPS/IFS)	Those open to administrative careers

Key takeaways: CDS is faster than NDA (which starts at Class XII) but slower than AFCAT for flying branches. It is less competitive than CSE in absolute numbers but more specialised in outcome. If your goal is to wear the uniform within a year of graduation, CDS is the most direct route; if you are open to civil careers, CSE offers broader options. AFCAT is a close cousin for technical graduates, while NDA is the only route for those still in school.

Syllabus and exam stages: what you will actually face

The CDS (I) 2027 follows a three-stage process: written prelims, written mains, and SSB interview. The written papers are set by UPSC and test academic ability plus current awareness. The SSB is conducted by the Services Selection Board and evaluates officer-like qualities.

• Written Prelims
  • Two objective papers: English (100 marks, 2 hours) and General Knowledge (100 marks, 2 hours).
  • Elementary Mathematics is not tested at this stage.
• Written Mains
  • Three to four papers depending on the academy: English, General Knowledge, and one or two optional subjects.
  • Papers are descriptive; answers must be written in the space provided.
• SSB Interview
  • Five-day process: screening test, psychology tests, group testing officer tasks, personal interview, and conference.
  • No written component; the board assesses personality, leadership, and social adaptability.

For the exact paper structure and mark distribution, refer to the official notification on the UPSC website. The syllabus is broad but anchored in Class XII-level academic content; the challenge is to combine depth with speed.

How to prepare without over-investing

This is not a full preparation guide—those belong on specialist sites—but a short orientation for readers scanning multiple exams. The CDS syllabus overlaps heavily with the Civil Services Preliminary Examination in English and General Knowledge, so candidates already preparing for CSE can leverage that overlap. If you are starting from scratch, focus on three areas:

• Speed reading and précis writing
  • Practise reading a 500-word article in under 3 minutes and condensing it to 150 words. CDS mains rewards concise expression.
• Current affairs capsule
  • Use a monthly current affairs magazine or a trusted exam updates page on OurEducation to stay abreast of national and international developments.
• SSB familiarisation
  • Watch official SSB videos on YouTube and read the “SSB Interview” chapter in any standard GK book. The format is standardised; knowing what to expect halves the anxiety.

Take two full-length mock tests on Examophobia before the prelims; aim for 70%+ in each. If you are already in the CSE grind, allocate only 20–25% of your weekly hours to CDS-specific material; the rest can be shared revision.

Common pitfalls for first-time applicants

Even well-prepared candidates can trip on avoidable details. Below are the most frequent slip-ups observed in past cycles.

• Ignoring the academy-specific eligibility
  • Engineering graduates cannot apply for IMA; non-engineers cannot apply for INA or AFA. Double-check the qualification table in the notification.
• Underestimating the mains jump
  • Candidates who clear prelims often treat mains as a formality; the jump from objective to descriptive writing is steep. Draft one answer daily in the 60 days before mains.
• Over-packing for the SSB
  • Bring only the documents listed in the call-up letter. Extra certificates, medals, or “character certificates” are not required and can slow you down.
• Assuming women have the same options as men
  • Women can apply only to OTA (Chennai) and only within a narrow age band. There is no women’s entry to IMA, INA, or AFA.

Should you apply?

If your ambition is to command troops, sail ships, or fly jets, CDS (I) 2027 is the fastest route to a commission. If you are still weighing civil versus uniformed careers, treat CDS as a low-risk experiment: the syllabus overlaps with CSE, the SSB is a one-off event, and the application fee is only ₹200 (exempt for SC/ST/Women). If you decide to sit, block the prelims date now, download the notification, and verify your eligibility against the official table. Everything else—mock tests, current affairs, SSB practice—can be slotted in later. The schedule is public, the competition is predictable, and the only variable left is your decision to apply.

Last updated 15 August 2026. Dates change — always confirm on the official commission website before acting on them.

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