NDA 2026 Written Exam Pattern: Complete Guide
Understand the NDA exam pattern including Mathematics, GAT, marking scheme, negative marking, exam duration, syllabus, and preparation strategy.
Introduction
The NDA (National Defence Academy) written exam is the first stage of one of the most prestigious defence career paths in India. Conducted twice a year by the Union Public Service Commission (UPSC), the NDA written exam selects candidates for Army, Navy, and Air Force wings of the National Defence Academy.
Understanding the exam pattern — not just the syllabus, but the marking scheme, time constraints, and sectional weightages — is the first and most important step in preparation. Many aspirants jump straight into studying without understanding how the exam actually works, and this costs them marks on exam day.
This guide provides a complete breakdown of the NDA 2026 written exam pattern, including syllabus, marking scheme, negative marking, time allocation strategy, and a practical preparation roadmap.
Key Takeaways
- The NDA written exam consists of two papers: Mathematics (300 marks) and GAT (600 marks) — total 900 marks
- Mathematics has 150 questions (2 marks each, 150 minutes)
- GAT has 150 questions (4 marks each, 150 minutes)
- Negative marking of 0.83 marks applies to both papers
- Eligibility criteria include age, educational qualification, and nationality requirements
- The written exam is followed by SSB interview (900 marks) — total 1800 marks
NDA 2026 Exam Overview
| Detail | Information |
|---|---|
| Conducting Body | UPSC (Union Public Service Commission) |
| Exam Frequency | Twice a year (NDA I and NDA II) |
| Total Written Marks | 900 (Mathematics 300 + GAT 600) |
| SSB Interview Marks | 900 |
| Grand Total | 1800 |
| Exam Mode | Offline (Pen and paper) |
| Duration | 5 hours (2 papers of 2.5 hours each) |
Eligibility Criteria for NDA 2026
| Criteria | Requirement |
|---|---|
| Nationality | Indian citizen (or subject of Bhutan/Nepal/Tibetan refugee) |
| Age Limit | 16.5 to 19.5 years (born between 02 Jul 2007 and 01 Jul 2010 for NDA II) |
| Educational Qualification (Army) | Passed or appearing in Class 12 |
| Educational Qualification (Navy/Air Force) | Passed or appearing in Class 12 with Physics and Mathematics |
| Gender | Male and Female (women admitted to all wings since 2021) |
| Marital Status | Unmarried |
| Physical Standards | As per NDA physical eligibility guidelines |
Paper 1: NDA Mathematics (300 Marks)
| Detail | Value |
|---|---|
| Total Questions | 150 |
| Total Marks | 300 |
| Duration | 150 minutes (2.5 hours) |
| Marks per Question | 2 |
| Negative Marking | 0.83 per wrong answer |
| Level | Class 11-12 CBSE |
Mathematics Syllabus
- Algebra: Sets, Complex Numbers, Quadratic Equations, Sequences and Series, Permutations and Combinations, Binomial Theorem
- Matrices and Determinants: Types of matrices, operations, determinants, properties
- Trigonometry: Trigonometric ratios, identities, equations, inverse functions, heights and distances
- Analytical Geometry: Straight lines, circles, conic sections (parabola, ellipse, hyperbola)
- Calculus: Limits, continuity, differentiation, integration, applications
- Vector Algebra: Vectors, dot product, cross product, scalar triple product
- Probability and Statistics: Probability, mean, median, mode, standard deviation
- Differential Equations: Formulation, solving first-order equations
Paper 2: General Ability Test (GAT) — 600 Marks
| Detail | Value |
|---|---|
| Total Questions | 150 |
| Total Marks | 600 |
| Duration | 150 minutes (2.5 hours) |
| Marks per Question | 4 |
| Negative Marking | 0.83 per wrong answer |
Part A: English (200 Marks — 50 Questions)
The English section tests grammar, vocabulary, comprehension, and verbal ability. Key topics include: Spotting Errors, Sentence Completion, Synonyms and Antonyms, Reading Comprehension, Idioms and Phrases, Ordering of Words and Sentences, Cloze Test.
Part B: General Knowledge (400 Marks — 100 Questions)
| Subject | Approx. Questions | Approx. Marks |
|---|---|---|
| General Science (Physics, Chemistry, Biology) | 30-35 | 120-140 |
| History (Indian Freedom Movement, Medieval, Modern) | 20-25 | 80-100 |
| Geography (Physical, World, Indian) | 15-20 | 60-80 |
| Current Affairs (National, International, Defence) | 10-15 | 40-60 |
| Defence Awareness | 8-10 | 32-40 |
Negative Marking: How It Works and Why It Matters
Both papers have negative marking of 0.83 marks per wrong answer. This is calculated as one-third of the marks per question (for 2.5-mark questions, one-third is 0.83).
What this means in practice:
- 5 wrong answers cancel out approximately 2 correct answers in Mathematics
- 5 wrong answers cancel out approximately 1 correct answer in GAT
- Blind guessing across 30 questions could cost you 25 marks — enough to drop below the cut-off
When to guess: If you can confidently eliminate 2 out of 4 options, it is statistically worth attempting. If you have no idea, skipping is safer.
SSB Interview (900 Marks)
Candidates who clear the written exam cutoff are called for the SSB (Services Selection Board) interview, which carries 900 marks. The SSB is a 5-day process that includes:
- Stage 1: Screening (Officer Intelligence Rating, Picture Perception and Discussion Test)
- Stage 2: Psychological Tests (Thematic Apperception Test, Word Association Test, Situation Reaction Test, Self-Description)
- Group Testing (Group Discussions, Group Planning, Progressive Group Task, Command Task, Lecturette)
- Personal Interview
- Conference
The final merit list is based on written exam marks + SSB marks, totalling 1800 marks.
Preparation Strategy for NDA 2026
A structured preparation plan based on the exam pattern is essential. Here is a recommended 12-week approach:
| Weeks 1-4 | Weeks 5-8 | Weeks 9-12 |
|---|---|---|
| Cover Mathematics syllabus (high-weightage topics first) | Complete GAT syllabus (Science + History + Geography) | Full-length mock tests (2 per week) |
| Start with Algebra and Trigonometry | Focus on English grammar + vocabulary daily | Analyse every test thoroughly |
| Practice 30 Maths questions daily | Revise Current Affairs weekly | Target weak areas from analysis |
| Start reading newspapers daily | Take first full mock test in Week 6 | Build exam temperament |
Important Dates for NDA 2026 (Tentative)
| Event | NDA I 2026 | NDA II 2026 |
|---|---|---|
| Application Release | January 2026 | June 2026 |
| Application Deadline | February 2026 | July 2026 |
| Written Exam | April 2026 | September 2026 |
| Result Declaration | June 2026 | November 2026 |
| SSB Interview | July-August 2026 | December-January 2026 |
Frequently Asked Questions
Yes. Female candidates are eligible for all wings of NDA (Army, Navy, Air Force) since the 2021 reforms.
There is no minimum percentage requirement. However, candidates must have passed Class 12 from a recognised board.
Yes. Candidates appearing for Class 12 can apply provisionally. Admission is subject to passing the qualifying exam.
Written exam marks (900) + SSB marks (900) = Total 1800 marks. Merit list is based on this combined score.
Cut-off varies by category and exam session. Typically ranges between 340-400 out of 900 for general category candidates.
Physics and Mathematics are required only for Navy and Air Force wings. The Army wing is open to all streams.
Yes. Mathematics is compulsory for all candidates. GAT is the second paper for all candidates.
No fixed sectional cut-off exists. The total marks from both papers are combined to determine qualification.
As many times as your age allows — between 16.5 and 19.5 years, you typically get 5-6 attempts.
You are called for the SSB interview (5-day process). SSB evaluates officer qualities, psychological aptitude, and group skills.
Conclusion
The NDA written exam pattern is well-defined and predictable. Success comes from understanding the structure thoroughly — not just the syllabus, but the marking scheme, time constraints, and sectional strategy. Once you know exactly what the exam expects, you can tailor your preparation accordingly.
Focus your energy on high-weightage topics first. Practice under timed conditions. Analyse every mistake. Build your exam temperament through consistent mock tests. The NDA 2026 written exam is challenging, but with the right strategy, it is absolutely achievable.
Preparation becomes more effective when you consistently practice under exam-like conditions and review your performance. If you're looking for a structured way to combine mock tests, previous year questions, performance analysis, and AI-guided study planning, you can explore NDA AIR 1 and start with a free mock test.