CDS Syllabus 2026: Subject-Wise Topics, Exam Pattern + PDF

The CDS syllabus covers three subjects — English, General Knowledge and Elementary Mathematics — for entry into the IMA, INA and AFA, while OTA candidates are tested only on English and General Knowledge (no Maths). Each paper is objective, bilingual (English & Hindi except the English paper), runs for 2 hours, carries a 1/3 negative marking penalty, and the total written marks are 300 for IMA/INA/AFA and 200 for OTA. This guide breaks down the complete cds syllabus 2026 subject-wise, adds topic-wise weightage based on previous-year papers, a curated booklist, a time-bound study plan and a free subject-wise PDF you can download and start with today.

Quick answer — the CDS syllabus at a glance:

• Subjects (IMA/INA/AFA): English (100), General Knowledge (100), Elementary Mathematics (100) = 300 marks.
• Subjects (OTA): English (100) + General Knowledge (100) = 200 marks, no Maths paper.
• Format: objective/MCQ, 2 hours per paper, 1/3 negative marking.
• Level: graduate-level English, Class-10 (matriculation) Maths, broad graduate-level GK.
• Next stage: a written exam followed by the SSB interview (300 marks).

CDS Syllabus 2026 Overview

The Combined Defence Services (CDS) Examination is conducted twice a year (CDS 1 and CDS 2) by the Union Public Service Commission (UPSC) to recruit officers into four academies:

• IMA — Indian Military Academy, Dehradun (Army)
• INA — Indian Naval Academy, Ezhimala (Navy)
• AFA — Air Force Academy, Hyderabad (Air Force)
• OTA — Officers Training Academy, Chennai (Short Service Commission, both men and women)

Selection has two stages: a written examination followed by an SSB (Services Selection Board) interview worth 300 marks. The cds syllabus 2026 itself has not changed structurally from previous cycles — UPSC continues to test graduate-level English, matriculation-level Elementary Mathematics and a broad General Knowledge section. Understanding exactly what falls inside each subject, and how many questions typically come from each topic, is the difference between finishing a paper comfortably and running out of time. Always cross-check dates and any last-minute changes against the official UPSC CDS notification for the cycle you are applying to.

CDS Exam Pattern 2026 — Marks, Papers & Duration

Before the syllabus, fix the cds exam pattern 2026 in your head, because it decides how you allocate the 2 hours per paper. The written exam is fully objective (multiple-choice), and every paper is bilingual except the English paper, which is in English only.

Here is the paper-by-paper breakdown of marks and question count, which most aspirants get confused about:

How many papers are there in the CDS exam? For IMA, INA and AFA there are three papers (English, GK, Elementary Maths). For OTA there are only two papers (English and GK). So an OTA-only aspirant writes 200 marks of paper, while an IMA/INA/AFA aspirant writes 300.

Negative Marking & Marks-vs-Time Strategy

Is there negative marking in the CDS exam? Yes. For every wrong answer, one-third (1/3) of the marks assigned to that question is deducted. Because English and GK have 120 questions in 120 minutes, you get roughly one minute per question — there is no time to overthink. Elementary Maths gives 100 questions in 120 minutes, so about 72 seconds each, but many questions need working, so the effective pressure is higher.

The practical rule: with 1/3 negative marking, a pure blind guess across four options has negative expected value, but an educated guess after eliminating two options is worth attempting. Aim for 75–85% accuracy on attempted questions. A candidate who attempts 100/120 in GK at 80% accuracy nets far more than one who attempts all 120 at 65%. Speed without accuracy is punished twice — once by the wrong mark you lose and once by the 1/3 penalty.

CDS English Syllabus (Subject-Wise)

The cds english syllabus tests your command of grammar, usage and comprehension at graduate level. It is the most scoring paper because the topics are finite and repeat every year. There is no fixed official topic list beyond “testing the candidate’s understanding of English and workmanlike use of words,” but previous-year papers show a very stable pattern.

English Grammar Sub-Topics You Must Master

Error-spotting and sentence-improvement questions almost always come from the same grammar zones: subject-verb agreement, tenses, articles (a/an/the), prepositions, pronoun-antecedent agreement, conjunctions, degrees of comparison, and conditional sentences. For example, a classic error-spotting item — “One of the boys have not submitted their form” — tests agreement (“has”, “his”). Practising 30–40 error-spotting sentences a day for two weeks moves your English score more than any other single activity.

CDS General Knowledge Syllabus (Subject-Wise)

The cds gk syllabus is the widest section and covers current events plus everything a well-read graduate should know across History, Geography, Polity, Economics, General Science and Defence. Which subjects are important for CDS General Knowledge? Based on previous-year papers, General Science (Physics, Chemistry, Biology), History and Polity together account for over half the paper, so they deserve the most preparation time.

Current Affairs Window — How Much to Revise

For CDS, revise roughly the last 6 months of current affairs before the exam, with extra focus on defence news — new missile tests, joint military exercises, indigenous platforms (like Tejas, INS commissionings), and major appointments in the armed forces. A monthly current-affairs compilation is the most efficient way to cover this without drowning in newspapers. The Vision IAS Current Affairs Magazine (January 2026, English) is a compact monthly resource that covers national, international and defence-relevant events in one place, and stacking the last six monthly issues gives you a ready-made CA revision set.

For static Polity and Economics — two areas beginners often neglect — structured GS notes save weeks of scattered reading. The Vajiram Polity Notes cover the Constitution, Parliament and governance in exactly the depth CDS demands, and the Vision IAS Economics Notes distil banking, budget and basic economic concepts into revision-friendly form.

CDS Maths Syllabus (Elementary Mathematics)

The cds maths syllabus applies only to IMA, INA and AFA — not OTA. What level of Maths is asked in the CDS exam? It is Matriculation (Class 10) level: no calculus, no advanced coordinate geometry — but the questions are numerous (100 in 120 minutes) and reward speed. Below is the official topic list with previous-year-based question distribution — the data most competing pages leave vague.

The trend to internalise: Arithmetic alone is nearly a third of the paper, and together with Mensuration and Geometry it forms the majority. If your time is limited, master Arithmetic first (percentage, ratio, time-speed-distance and interest repeat every single year), then Mensuration formulae, then Trigonometry’s standard-angle values and height-and-distance model questions. Statistics is small but among the easiest marks — never skip it.

CDS Syllabus for OTA — What’s Different

The cds syllabus for ota is the same English and General Knowledge syllabus as the other academies, but with one crucial difference: there is no Mathematics paper. Is there Maths in the CDS exam for OTA? No — OTA candidates write only English and GK, for a total of 200 written marks. Here is the clean side-by-side comparison that most pages describe but rarely tabulate:

If you are targeting OTA only, redirect the time you would have spent on Maths into deepening English accuracy and expanding your GK/current-affairs coverage, because with only two papers each mark carries more weight in the merit list.

Is the CDS Syllabus the Same as NDA?

Is CDS syllabus same as NDA? They overlap heavily but are not identical. Both test Mathematics and a general-ability/GK section, but NDA’s Mathematics is far larger (300 marks, 12th-standard level including calculus and vectors) while CDS Elementary Maths is Class-10 level and worth 100 marks. NDA’s second paper is a combined General Ability Test (English + GK together, 600 marks), whereas CDS splits English and GK into two separate 100-mark papers. Eligibility also differs: NDA is for 12th-pass candidates aged 16.5–19.5, while CDS requires a graduation degree. So if you have practised for NDA Maths, CDS Elementary Maths will feel easy; but the CDS English paper is more demanding at graduate level.

Best Books & Study Material for CDS 2026

Most competing pages skip section-wise book recommendations entirely. Here is a curated, section-tied list so you are not guessing what to buy.

Practising previous-year questions is the single highest-return activity for CDS GK, because topics genuinely repeat. The Forum IAS Topic-Wise PYQ Toolkit (1992–2025) — while built for UPSC — is a strong companion for the History, Polity, Geography, Economy and Science overlap that dominates the CDS GK paper, letting you drill by topic rather than by random set.

Topic-Wise Weightage & Previous-Year Trends

Pulling the three subjects together, here is the consolidated “where the marks live” view from recent CDS papers — the data-backed summary you can pin above your desk:

The recurring pattern means a smart candidate front-loads the high-frequency topics: in Maths, Arithmetic word problems; in GK, Class-10 science and modern Indian history; in English, error-spotting and vocabulary. Cover these before touching the low-frequency tail (Statistics, Environment, Set Theory), and you secure the bulk of marks first.

How to Cover the CDS Syllabus — Time-Bound Study Plan

Both CDS cycles give you a similar window. This is a practical way to cover the full cds syllabus in about 90 days, adjustable to 60 for a faster CDS 1 vs CDS 2 turnaround.

Daily Routine That Works

Give each subject a daily slot rather than studying one subject for days on end: e.g., 2 hours Maths, 1.5 hours GK (rotating History/Polity/Science), 1 hour English, and 30 minutes current affairs. Take a full-length, timed mock every third day from Day 66 and — most importantly — spend as long analysing the mock as taking it. Your error log (why you got each question wrong) is the real syllabus for your last two weeks.

Common Mistakes to Avoid

• Ignoring negative marking discipline: attempting every question blindly can wipe out 15–20 hard-earned marks.
• Over-preparing GK, under-practising Maths: Maths is the most improvable paper because it is formula-driven — daily practice beats reading.
• Skipping the English paper as “easy”: at graduate level, error-spotting and vocabulary decide the merit gap; it is where toppers pull ahead.
• Revising 12 months of current affairs: the last 6 months (with defence focus) are enough — depth over volume.
• No timed mocks: the paper is a speed test; untimed practice hides your real weakness.

Download the Subject-Wise CDS Syllabus PDF

You can download the complete cds syllabus subject wise pdf — covering the full English, General Knowledge and Elementary Mathematics topic lists, the exam pattern, and the topic-wise weightage tables above — as a printable one-page checklist to track your preparation. Keep the official UPSC CDS notification handy each cycle to confirm dates and any changes, and pair the PDF with a good mock-test routine to convert the syllabus into marks. Print the checklist, tick topics as you finish them, and you will always know exactly how much of the cds syllabus 2026 is left.

Frequently Asked Questions

What is the syllabus of the CDS exam?

The CDS syllabus covers three subjects — English (comprehension, grammar, vocabulary), General Knowledge (History, Polity, Geography, Economics, General Science, Current Affairs and Defence) and Elementary Mathematics (Arithmetic, Algebra, Trigonometry, Geometry, Mensuration and Statistics). OTA candidates are tested only on English and General Knowledge.

Is the CDS syllabus the same as NDA?

They overlap but are not identical. Both test Maths and general ability, but NDA Maths is 12th-standard level (300 marks, with calculus) while CDS Elementary Maths is Class-10 level (100 marks). NDA combines English and GK into one paper; CDS keeps them separate. CDS also requires graduation, whereas NDA needs only Class 12.

Is there Maths in the CDS exam for OTA?

No. OTA candidates write only two papers — English and General Knowledge — for a total of 200 written marks. The Elementary Mathematics paper applies only to IMA, INA and AFA aspirants.

What is the CDS exam pattern and marking scheme?

For IMA/INA/AFA there are three objective papers of 100 marks each (English, GK, Maths), 2 hours per paper, totalling 300 written marks. OTA has two papers totalling 200. Every wrong answer carries a 1/3 negative marking penalty, and papers are bilingual except the English paper.

How many papers are there in the CDS exam?

IMA, INA and AFA candidates write three papers — English, General Knowledge and Elementary Mathematics. OTA candidates write only two papers — English and General Knowledge — because there is no Maths paper for OTA.

What level of Maths is asked in the CDS exam?

CDS Elementary Mathematics is Matriculation (Class 10) level. It focuses heavily on Arithmetic (percentage, ratio, time-speed-distance, interest), Mensuration and Geometry, with no calculus or advanced topics. The challenge is speed — 100 questions in 120 minutes.

Which subjects are important for CDS General Knowledge?

General Science (Physics, Chemistry, Biology at Class-10 level), History (especially Modern India) and Current Affairs carry the most questions, followed by Polity and Geography. Prioritising these three areas covers the majority of the GK paper.

How much current affairs should I revise for CDS?

Cover roughly the last six months of current affairs before the exam, with extra attention to defence news — missile tests, joint exercises, indigenous platforms and major armed-forces appointments. A monthly compilation for the last six issues is a compact, exam-focused way to revise without reading full newspapers daily.

Which books are best for the CDS syllabus?

Wren & Martin plus a CDS PYQ set for English; R.S. Aggarwal with NCERT Class 8–10 for Elementary Maths; NCERT Science and structured Polity, Economics and History notes for GK; and a monthly current-affairs magazine. Add topic-wise previous-year questions for accuracy under time pressure.

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