UPSC CDS 2026 – Complete
Preparation Guide
CDS recruits Commissioned Officers for the Indian Military Academy (IMA), Naval Academy (INA), Air Force Academy (AFA) and Officers' Training Academy (OTA). CDS I 2026 exam was held on 13 April 2026. CDS II 2026 notification expected September 2026. Graduate required. Age 19–25 years.
1What is UPSC CDS 2026?
Combined Defence Services (CDS) Examination is conducted by the Union Public Service Commission (UPSC) twice a year to recruit Commissioned Officers for the three wings of the Indian Armed Forces. It is one of the most prestigious routes to a defence career open to graduates.
Successful candidates join a training academy — IMA Dehradun, INA Ezhimala, AFA Dundigal, or OTA Chennai — for a 1–2 year training programme before being commissioned as officers. Female candidates are eligible exclusively for OTA.
UPSC CDS I 2026 written exam was held on 13 April 2026. Result expected June–July 2026. CDS II 2026 notification is expected in September 2026. No OTA Women vacancies were notified for CDS I 2026 — watch CDS II 2026 for those.
2Important Dates 2026
| Event | Date | Status |
|---|---|---|
| CDS I 2026 Notification Released | 22 October 2025 | ✅ Done |
| CDS I 2026 Application Last Date | 11 November 2025 | ✅ Done |
| CDS I 2026 Written Exam | 13 April 2026 | ✅ Done |
| CDS I 2026 Written Result | June–July 2026 (Expected) | ⚠️ TBN |
| CDS I 2026 SSB Interview Rounds | Aug–Dec 2026 (Expected) | ⚠️ TBN |
| CDS I 2026 Final Merit List & Joining | Early 2027 (Expected) | ⚠️ TBN |
| CDS II 2026 Notification | September 2026 (Expected) | ⚠️ TBN |
| CDS II 2026 Written Exam | November 2026 (Expected) | ⚠️ TBN |
TBN = To Be Notified. CDS II 2026 dates are estimates based on historical patterns. Always verify on upsc.gov.in.
3Eligibility Criteria 2026
📋 Age Limits by Academy
| Academy | Age Range | Gender |
|---|---|---|
| Indian Military Academy (IMA) | 19–24 years | Male |
| Indian Naval Academy (INA) | 19–24 years | Male |
| Air Force Academy (AFA) | 20–24 years | Male |
| Officers' Training Academy (OTA) | 19–25 years | Male and Female |
Important: There is NO age relaxation of any kind (OBC, SC, ST, PwBD) for CDS. The age limit is absolute.
4Vacancy History
| Cycle | Total | IMA + INA | AFA | OTA |
|---|---|---|---|---|
| CDS II 2023 | ~459 | 132+32 | 32 | 263 |
| CDS I 2024 | ~457 | 100+32 | 32 | 293 |
| CDS II 2024 | ~342 | 100+32 | 32 | 178 |
| CDS I 2025 | ~459 | 100+32 | 32 | 295 |
| CDS I 2026 | ~339 | 100+32 | 32 | 175 |
| CDS II 2026 (upcoming) | TBN | TBN | TBN | TBN |
5Exam Pattern 2026
For IMA / INA / AFA — 3 Papers, 340 Marks Total
| Paper | Qs | Marks | Duration |
|---|---|---|---|
| English | 120 | 120 | 2 hrs |
| General Knowledge | 120 | 120 | 2 hrs |
| Elementary Mathematics | 100 | 100 | 2 hrs |
| Total | 340 | 340 | 6 hrs |
For OTA — 2 Papers, 240 Marks Total
| Paper | Qs | Marks | Duration |
|---|---|---|---|
| English | 120 | 120 | 2 hrs |
| General Knowledge | 120 | 120 | 2 hrs |
| Total | 240 | 240 | 4 hrs |
Final merit = Written Exam marks + SSB Interview marks. SSB carries 300 marks for IMA/INA/AFA (Total 640) and 200 marks for OTA (Total 450). Negative marking: 1/3 per wrong answer in all papers.
6Detailed Syllabus 2026
1📖 English (120 Marks) — All Academies
- ▸Spotting Errors – grammar, usage, syntax
- ▸Sentence Improvement and Sentence Ordering
- ▸Fill in the Blanks (vocabulary in context)
- ▸Synonyms and Antonyms in context
- ▸Reading Comprehension (1–2 passages)
- ▸Idioms and Phrases
- ▸Direct and Indirect Speech (narration)
- ▸Active and Passive Voice
- ▸Cloze Test
- ▸Para Jumbles (Ordering of Sentences)
2🌍 General Knowledge (120 Marks) — All Academies
- ▸Current Affairs – National and International (last 6 months)
- ▸History of India – Ancient, Medieval, Modern, Freedom Struggle
- ▸Indian Polity and Constitution – features, amendments, bodies
- ▸Geography – India and World (physical, economic, climate)
- ▸Indian Economy – basic concepts, policies, budget highlights
- ▸Physics – matter, light, sound, electricity
- ▸Chemistry – elements, compounds, reactions
- ▸Biology – human body, diseases, nutrition
- ▸Defence and Military History – battles, milestones, HQ
- ▸Sports, Awards, Books, Personalities, Important Days
3🔢 Elementary Mathematics (100 Marks) — IMA / INA / AFA only
- ▸Arithmetic – Number System, LCM/HCF, Fractions, Percentages
- ▸Ratio and Proportion, Averages, Simple and Compound Interest
- ▸Profit and Loss, Time and Work, Time Speed Distance
- ▸Algebra – Factorization, Linear and Quadratic Equations
- ▸Logarithms, Sets and Set Theory
- ▸Geometry – Lines, Angles, Triangles, Circles, Quadrilaterals
- ▸Mensuration – Area and Volume (2D and 3D)
- ▸Trigonometry – Identities, Heights and Distances
- ▸Statistics – Mean, Median, Mode, Bar diagrams, Pie charts
- ▸Matrices – basic operations and determinants
7Previous Year Cut-offs
| Academy | Written 2024 | Written 2023 | Final 2024 | Final 2023 |
|---|---|---|---|---|
| IMA (Written) | ~149/340 | ~141/340 | ~251/640 | ~244/640 |
| INA (Written) | ~149/340 | ~141/340 | ~255/640 | ~248/640 |
| AFA (Written) | ~149/340 | ~141/340 | ~257/640 | ~249/640 |
| OTA Men (Written) | ~82/240 | ~75/240 | ~149/450 | ~142/450 |
| OTA Women (Written) | ~82/240 | ~75/240 | ~145/450 | ~139/450 |
Cut-offs are approximate. Final cut-off is out of 640 (IMA/INA/AFA) or 450 (OTA). A strong SSB score can compensate for an average written score.
8SSB Interview Process (5 Days)
SSB is a comprehensive 5-day personality and leadership assessment that evaluates 15 Officer Like Qualities (OLQs). It carries 300 marks for IMA/INA/AFA and 200 marks for OTA.
Officer Intelligence Rating (OIR) Test (Verbal + Non-Verbal) and Picture Perception and Description Test (PPDT). Screened-in candidates proceed; others are sent back on the same day.
Thematic Apperception Test (TAT), Word Association Test (WAT), Situation Reaction Test (SRT), and Self-Description Test (SD). Tests personality, Officer Like Qualities (OLQs), and self-awareness.
Group Discussion (GD), Group Planning Exercise (GPE), Progressive Group Task (PGT), Half Group Task (HGT), Individual Obstacles, Command Task, Final Group Task, and Lecturette.
45–60 minute one-on-one interview by a Senior Assessor. Covers personal background, hobbies, current affairs, motivation to join defence, and OLQ assessment. Honesty is key.
Final assessment conference where IO, GTO, and Psychologist share scores. Result announced same day — Recommended (R) or Not Recommended (NR). Recommended candidates go for medical examination.
9Salary & Career Growth
CDS officers are paid under the 7th Pay Commission. On commissioning as Lieutenant, pay is Level 10 (Rs 56,100/month) plus Military Service Pay (MSP) of Rs 15,500/month for all officers.
💰 Salary Breakdown — Lieutenant (On Joining)
| Component | Amount |
|---|---|
| Basic Pay – Lieutenant (Pay Level 10) | ₹56,100/month |
| Military Service Pay (MSP) | ₹15,500/month |
| Dearness Allowance (DA) on Basic + MSP | ~₹18,400/month |
| House Rent Allowance / Free Govt. Accommodation | ₹6,700–₹13,500/month |
| Transport Allowance (TPTA) | ₹3,600–₹7,200/month |
| Flying Allowance (AFA officers only) | ₹25,000–₹43,000/month extra |
| Estimated Gross In-hand (Lt., non-flying) | ~₹90,000–₹1,00,000/month |
📈 Career Progression
| Rank | Timeline | Pay Level | Basic Pay |
|---|---|---|---|
| Lieutenant | 0–2 yrs | Level 10 | ₹56,100–₹1,77,500 |
| Captain | 2–5 yrs | Level 10B | ₹61,300–₹1,93,900 |
| Major | 5–13 yrs | Level 11 | ₹69,400–₹2,07,200 |
| Lieutenant Colonel | 13–19 yrs | Level 12A | ₹1,21,200–₹2,12,400 |
| Colonel | 19–25 yrs | Level 13 | ₹1,30,600–₹2,15,900 |
| Brigadier / Maj General | 25+ yrs | Level 13A+ | ₹1,39,600+ |
10How to Apply for CDS 2026
Go to upsconline.nic.in. Do NOT use any third-party site — only the official UPSC portal is valid for applications.
New candidates must register at upsconline.nic.in/otrs/. You need a valid email, mobile number, and scanned photo and signature.
Select the CDS notification, fill personal details, educational qualification, and choose academy preference. Double-check all entries before submitting.
Rs 200 for General and OBC candidates. SC, ST, and female candidates are exempt. Payment via SBI Net Banking, Challan, or card.
Save the confirmation page. Admit card is released on upsc.gov.in about 3 weeks before the exam. Carry it with a valid photo ID to the exam hall.
116-Month Study Plan for CDS 2026
Revise grammar rules: tenses, articles, prepositions, voice, narration. Do 30 error-spotting and sentence-improvement drills daily. Start reading The Hindu or Indian Express every morning for 15 minutes. CDS English is tricky but very scorable with daily practice.
Revise NCERT Class 9–12 Maths: Arithmetic, Algebra, Geometry, Trigonometry. CDS Maths is Class 10–12 standard but questions are cleverly framed. Target 60–70% accuracy by Month 2 end. Solve previous year CDS Maths papers to understand the question style.
Cover NCERT History (Class 6–12), Indian Polity by Laxmikanth, and NCERT Geography. These three form about 60% of GK. Make short notes for quick revision. Study 3–4 chapters daily and revise weekly.
Physics, Chemistry, Biology from NCERT Class 8–10. Basic Economics and Budget highlights. Start a daily current affairs habit using free apps. Defence news and appointments are very frequently asked in CDS GK.
Start full-length CDS mock tests. Target 2 mocks per week. Analyse wrong answers carefully — most mistakes are in GK and Maths. Revise weak areas. Build English vocabulary from previous year papers.
Revise all subjects using short notes. Daily practice for English and Maths. Start preparing for SSB: read about Officer Like Qualities (OLQs), watch SSB YouTube videos, practise WAT and TAT writing. Physical fitness: running, push-ups, pull-ups — start 6 months before SSB.
12Best Books for CDS 2026
| Book | Author | Subject | Buy |
|---|---|---|---|
| Pathfinder CDS Examination Conducted by UPSC | Arihant Experts | All-in-One | — |
| CDS Chapterwise-Sectionwise Solved Papers | Arihant Publications | Previous Papers | — |
| Objective General English | S.P. Bakshi (Arihant) | English | Buy |
| NCERT Mathematics Class 9 and 10 | NCERT | Mathematics | — |
| Indian Polity | M. Laxmikanth | General Knowledge | Buy |
| A Brief History of Modern India | Rajiv Ahir (Spectrum) | History | — |
| Certificate Physical and Human Geography | G.C. Leong | Geography | Buy |
| SSB Interview: The Complete Guide | Maj Gen (Retd.) J.K. Chopra | SSB Interview | — |
13Free Resources for CDS Preparation
Official notifications, syllabus PDFs, previous year papers, and admit cards.
Best free resource for SSB interview prep — GTO, Psychology, WAT, TAT explained by experts.
Free daily current affairs and CDS GK classes.
Free CDS classes for English, GK, and Mathematics with mock test solutions.
Free full-length CDS mock tests and previous year papers with analytics.
Free NCERT textbooks — the most important source for CDS GK and Mathematics.
Official defence magazine — great for current defence affairs and service news.
Free SSB prep articles, GK notes, success stories, and community for defence aspirants.
14Expert Tips for CDS 2026
Negative marking is one-third mark per wrong answer. Never guess randomly. If you can eliminate two options, attempt — otherwise skip. Accuracy over attempts. Skipping a time-consuming Maths question and securing English and GK marks is often the smarter call.
GK carries the highest weight and is the most dynamic section. CDS regularly asks about recent appointments (Chiefs of Army/Navy/Air Force), exercise names, missile tests, budget defence allocations, and India-centric geography. Build a 6-month daily reading habit.
CDS Maths is Class 10–12 level — not higher. But questions are cleverly designed. Solve the last 10 years of CDS Maths papers to spot repeated topics. Trigonometry, Mensuration, and Statistics carry the highest weight. Even 50–60 out of 100 adds significant marks.
SSB carries 300 marks vs 340 for the written exam (for IMA). A strong SSB score can compensate for an average written score. Develop genuine leadership, communication, and teamwork — not scripted answers. Interviewers see thousands of candidates and detect rehearsed responses instantly.
Start physical fitness training from Day 1 of preparation. SSB does not have a formal PFT, but fitness influences stamina, confidence, and bearing during the 5-day process. Run 2–3 km daily, add push-ups and pull-ups. You want to arrive at SSB fit and sharp, not gasping.
CDS is held twice a year. If you miss CDS I, CDS II is only 6 months away. Many successful officers cleared CDS on their second or third attempt. Each attempt gives better understanding of the exam and SSB. Never let one NR (Not Recommended) at SSB discourage you.
For SSB interview, know your PIQ (Personal Information Questionnaire) deeply. Everything on your PIQ is fair game for the interviewer. They look for consistency between what you wrote and what you say. Be honest — never inflate or invent experiences.
OTA aspirants only need English and GK — no Maths. This makes CDS more accessible for arts and commerce graduates. OTA Men also has a higher age ceiling of 25 years vs 24 for IMA/INA/AFA, giving an extra year of preparation time.