Complete IB ACIO Syllabus 2026: Tier 1, Tier 2 & Interview Breakdown

The IB ACIO syllabus covers five sections in Tier 1, a descriptive paper in Tier 2, and an interview in Tier 3. The detailed IB ACIO syllabus is not published as a separate document, not even in the official IB ACIO notification.

This article covers the full IB ACIO syllabus for the IB ACIO exam topic by topic: what is asked, how much weightage each section carries, and how the IB ACIO syllabus for 2026 compares with SSC CGL, banking exams, and UPSC.

Is There an Official IB ACIO Syllabus PDF?

The Ministry of Home Affairs does not release a standalone syllabus PDF. The closest official document is the

It mentions the five sections for Tier 1 and the three components for Tier 2, without a topic list, in the notification only.

What is the IB ACIO Syllabus?

IB ACIO selection has three stages. Each tests something different.

A key fact about the syllabus: IB ACIO is heavily current affairs-driven. It shows up in Tier 1 (20 marks directly), in Tier 2 essays and long answers, and in the interview. Candidates who ignore current affairs struggle across all three stages.

For complete exam pattern details, read our article on IB ACIO Exam Pattern.

What is the IB ACIO Tier 1 Syllabus?

Tier 1 is a 100-question MCQ paper. Five sections, 20 questions each, 1 mark each. The total is 100 marks.

The five sections in the IB ACIO Tier 1 syllabus:

1. Current Affairs / General Awareness
2. General Studies
3. Numerical Aptitude (Maths)
4. Reasoning / Logical Aptitude
5. English Language

IB does not prescribe a topic list for Tier 1 in the IB ACIO notification. The sections below are built entirely from actual question papers.

What is the IB ACIO General Studies and Current Affairs Syllabus?

These two sections together carry 40 marks. They are the most variable and the hardest to predict. But clear patterns emerge from past papers.

What Topics Fall under Current Affairs?

Current Affairs covers events from roughly the last 6 to 12 months before the exam date. Topics that appeared:

• National and International News: Major political developments, bilateral agreements, summits
• Government Schemes: Recently launched central schemes and their stated objectives
• Budget and Economic Survey: Key numbers, new allocations, policy announcements
• Awards and Honours: National and international awards given in the last 12–18 months
• Sports: Tournament results, records, Indian team performance
• Defence Exercises: Joint military exercises India conducted with other countries
• Science and Technology: New developments, ISRO missions, NASA missions
• Books and Authors: Books published in the last 12–18 months
• Important Days: National and international observance days
• Appointments and Resignations: New appointments to constitutional posts, key government positions
• Summits and Conferences: G20, SCO, ASEAN, bilateral summits
• Reports and Indices: India’s rank in Global Hunger Index, Happiness Index, Ease of Doing Business, etc.
• Environment and Ecology: COP decisions, endangered species listings, climate agreements

Static GK does not come in the Current Affairs section. That belongs to General Studies. Do not mix the two.

What Topics does the IB ACIO General Studies Syllabus Cover?

General Studies is the broadest section in the IB ACIO syllabus. It takes the most preparation time.

History:

• Ancient, Medieval, and Modern India
• Freedom Struggle: key movements, dates, leaders
• Important movements and their context

Geography:

• Indian Geography: rivers, mountains, states, climate zones, agriculture
• World Geography: major rivers, mountain ranges, climate types

Polity:

• Constitution of India
• Fundamental Rights and DPSP
• Parliament: Lok Sabha, Rajya Sabha procedures
• President, Prime Minister: roles and powers
• Judiciary: Supreme Court, High Courts
• Constitutional Bodies: UPSC, Election Commission, CAG

Economy:

• Banking basics
• Inflation, GDP, fiscal deficit
• Budget and Economic Survey key points
• Taxation: direct vs indirect, GST basics

Science:

• Physics: basic laws, units, mechanics
• Chemistry: elements, compounds, basic reactions
• Biology: human body, diseases, plants
• Scientific discoveries and inventions

Static GK:

• National Parks and Wildlife Sanctuaries
• Important dams and rivers
• International organizations and headquarters
• Countries and capitals

The General Studies section goes beyond NCERT basics. Landmark court cases, economic reform history, and constitutional amendments have appeared directly. NCERT covers the foundation but is not enough on its own.

What is the IB ACIO Maths Syllabus?

The IB ACIO maths syllabus (Numerical Aptitude) is standard SSC-level. The topics are identical to what SSC CGL and CHSL cover.

Topics in the IB ACIO Numerical Aptitude syllabus:

• Number System
• Simplification and Approximation
• Percentage
• Profit and Loss
• Average
• Ratio and Proportion
• Discount
• Simple Interest (SI) and Compound Interest (CI)
• Time and Work
• Pipe and Cistern
• Time, Speed and Distance
• Boat and Stream
• Partnership
• Mixture and Alligation
• Algebra: basic equations
• Geometry: angles, triangles, circles
• Mensuration: area, volume of standard shapes
• Statistics: mean, median, mode
• Data Interpretation: tables, bar graphs, pie charts, line graphs

The difficulty stays Moderate to High. Questions are multi-step: boats and streams with complex conditions, discount schemes across 4 options. Basic arithmetic is not enough.

Speed is the challenge. 20 questions in roughly 12 to 15 minutes (if you follow a time split). Practice calculation shortcuts.

What is the IB ACIO Reasoning Syllabus?

Reasoning is often where marks are secured fastest, because the question types are predictable and improve quickly with practice.

Topics in the IB ACIO Reasoning syllabus:

• Analogy
• Classification
• Coding-Decoding
• Blood Relations
• Direction Sense
• Ranking and Ordering
• Alphabet Series
• Cause and Effect
• Statement and Assumption
• Statement and Conclusion
• Syllogisms
• Venn Diagrams
• Missing Number
• Number Series
• Puzzles
• Seating Arrangement (linear and circular)
• Data Sufficiency
• Calendar and Clock
• Decision Making

The difficulty level is Moderate to High. Arrangement questions (box stacking, floor arrangements) have multi-condition and time-consuming. Make more time for these and do the faster question types first.

What is the IB ACIO English Language Syllabus?

English is 20 marks and covers both grammar and vocabulary. Strong grammar fundamentals make this section manageable.

Grammar:

• Parts of Speech: Noun, Pronoun, Adjective, Verb, Adverb
• Preposition, Conjunction, Article
• Tenses
• Subject-Verb Agreement
• Voice (Active/Passive)
• Narration (Direct/Indirect)
• Error Detection
• Sentence Improvement

Vocabulary:

• Synonyms and Antonyms
• One Word Substitution
• Idioms and Phrases
• Spelling Correction
• Phrasal Verbs

Comprehension and Usage:

• Reading Comprehension passages
• Cloze Test
• Fillers
• Para-jumbles (sentence rearrangement)

Past comprehension passages have covered international affairs topics. Questions cover factual recall, central theme, structural analysis of the passage, and vocabulary in context.

The difficulty level is Moderate. Vocabulary-based questions (antonyms, one-word substitution) can be tricky if your reading habit is weak. Para jumbles require logical reasoning as much as language sense.

Which are the Most Important Topics in the IB ACIO Syllabus?

Current Affairs and General Studies combined account for 40% of Tier 1. That is the single largest block in the paper.

Topic-wise priority within each section:

For candidates with limited preparation time, this is the priority order:

1. Current Affairs ((last 6 months): 20 direct marks, also used in Tier 2 and Interview
2. Polity (under GS): Consistent appearance, high-yield
3. Reasoning: Coding-decoding, Blood relations, Series
4. Maths (DI, SI/CI, Percentage): Profit/loss, Interest, Mixtures, Arrangements
5. English: Comprehension, Vocabulary, Grammar

What is the IB ACIO Tier 2 Descriptive Syllabus?

The IB ACIO mains syllabus (Tier 2) is descriptive. Three components, 60 minutes, 50 marks total. English only. No Hindi option.

Minimum qualifying score: 33% (17/50). Candidates who score below this do not advance to the interview, regardless of Tier 1 performance.

Essay Syllabus

Essay topics in IB ACIO Tier 2 consistently come from areas related to governance, security, and current social issues. The IB ACIO mains syllabus for essay writing includes topics such as:

• National Security and Internal Security
• Terrorism and Cyber Security
• Artificial Intelligence
• Social Media: impact on society and governance
• Women Empowerment
• Education
• Climate Change
• Economic policy and development

Marks are given for: Content (knowledge of the topic), structure (introduction, body, conclusion), language (grammar, vocabulary, sentence variety), and coherence (logical flow of argument).

English Comprehension Syllabus

A passage of approximately 300 to 400 words is given. Candidates answer 5 sub-questions in about 40 words each. 2 marks per sub-question.

Sub-questions typically cover:

• Factual questions directly from the passage.
• Inference-based questions (what the author implies).
• Vocabulary in context (antonym or meaning of a word used in passage).
• Structural understanding (what does this paragraph do?).

The passage topic has no fixed pattern. It can be international affairs, history, science, or social issues.

Long Answer Questions Syllabus

Two questions from five, 250 words each, 10 marks each.

Topics consistently come from: governance and policy, internal security, economy, geopolitics, and social issues.

Topics that come up:

• Current economic issues (inflation, budget decisions, trade policy)
• Social issues (poverty, education access, gender equality)
• Political and governance issues (federalism, constitutional provisions)
• Current affairs-based analytical questions

Current affairs knowledge is more important here than in the essay section.

A question like “Comment on India’s cyber security policy” requires recent examples, not just background knowledge.

What is the IB ACIO Tier 3 Interview Syllabus?

There is no fixed or published syllabus for the interview. Based on past candidate experiences, the interview panel covers four broad areas.

Current Affairs & Security-Related Topics

This is the heaviest area in the interview. The panel focuses on:

• Recent internal security developments
• India’s border situation and neighbourhood relations
• Cyber threats and intelligence operations
• Major government policies in the last 6 to 12 months
• India’s position in international forums and geopolitics

Depth matters here, not just surface awareness. If you mention an event, expect a follow-up on its implications.

Educational Background

The panel asks questions from your graduation subject. Examples:

• Economics Graduates: Monetary Policy, Fiscal Deficit, RBI Functions
• Political Science Graduates: Constitutional Provisions, Electoral Reforms
• History Graduates: Modern Indian History, Colonial Administration
• Science graduates: Current Science and Technology Developments

Know your graduation subject well. These questions test whether you have a genuine academic foundation.

IB and Intelligence Work

Candidates are expected to have basic knowledge of:

• What IB does and how it functions?
• Difference between IB and other intelligence agencies (RAW, NTRO, NIA)
• India’s internal security architecture
• Why you want to join IB specifically?

Personality and Situational Questions

These test judgment and temperament. Common patterns:

• “If you receive sensitive information that contradicts your senior’s view, what do you do?”
• “How will you handle a posting in a conflict-affected area?”
• “What will you do if you suspect a colleague of leaking information?”
• Questions on hobbies, strengths, and weaknesses

There are no right answers to situational questions. The panel is assessing how you think, not what you conclude.

How Much Time does it Take to Cover the IB ACIO Syllabus?

It depends on your existing base.

No Prior Exam Preparation

• Tier 1: 4 to 5 months
• Tier 2: 1 additional month of writing practice
• Total: 5 to 6 months

SSC CGL base

• Maths, Reasoning, and English are largely covered.
• Focus areas: Current Affairs depth, Polity at judgment/amendment level, Tier 2 essay writing.
• Total: 2 to 3 months of studies focused on filling gaps.

Banking Exam Base (PO/Clerk)

• Reasoning and English overlap well.
• Gaps: General Studies section (History, Geography, Polity — not part of banking prep), deeper current affairs, Tier 2.
• Total: 3 to 4 months.

UPSC Prelims Base

• GS and current affairs are more than covered.
• Gaps: Arithmetic speed (20 marks, calculation-heavy), Tier 2 essay within 500-word limit.
• Total: 1 to 2 months.

How Does the IB ACIO Syllabus Compare to SSC CGL, Banking Exams, and UPSC?

SSC CGL vs IB ACIO Syllabus

SSC CGL preparation covers the majority of the IB ACIO Tier 1 syllabus.

Maths

Almost identical. SSC CGL covers every chapter in the IB ACIO maths syllabus. IB ACIO Tier 1 difficulty is slightly lower than SSC CGL Tier 1.

Reasoning

Very high overlap. Both exams test the same reasoning topics. SSC CGL places more emphasis on non-verbal reasoning (figures, patterns). IB ACIO does not.

English

High overlap. Grammar topics and vocabulary types are comparable.

General Awareness

Moderate. Both test GK. IB ACIO tests Current Affairs in a dedicated 20-mark section, making it more rigorous than SSC CGL’s General Awareness section where current events share space with static GK.

General Studies

Good overlap. History, Geography, Polity, Economy, and Science are common to both.

Topics in IB ACIO not covered by SSC CGL Prep

• Current Affairs at greater depth (IB goes deeper than SSC GA).
• Polity at constitutional amendment and landmark judgment level.
• Tier 2 essay writing practice in English.
• SSC CGL has no interview for most posts.
• SSC candidates can skip advanced Maths topics. IB does not need geometry, trigonometry, or DI

Overall SSC CGL coverage for IB ACIO Tier 1

Approximately 80-85%. Fill in the Current Affairs gap and Tier 1 is well covered.

Banking vs IB ACIO Syllabus

Maths

Similar chapter list. Banking exams test Maths at higher difficulty in Mains. IB ACIO Tier 1 is closer to banking Prelims level.

Reasoning

High overlap. Both test puzzles, seating arrangements, syllogisms, blood relations. Banking exams include input-output more heavily.

English

Moderate to high. Reading comprehension, error detection, and vocabulary are common.

General Awareness

Limited overlap. Banking GA focuses on financial news, RBI circulars, and banking-sector awareness. IB ACIO’s Current Affairs is broader: defence, science, international affairs matter more.

General Studies

Low overlap. Banking exams do not have a dedicated GS section. History, Polity, Geography are not banking exam topics.

Topics in IB ACIO Not Covered by Banking Exam Prep

• Interview at the IB level is more rigorous than banking PO interviews.
• General Studies section: History, Geography, Polity. Banking prep does not cover this.
• Essay writing at a deeper level (IB Tier 2 is harder than banking descriptive).
• No banking awareness needed for IB ACIO. Skip that entirely.

UPSC vs IB ACIO Syllabus

Maths

Low overlap. UPSC CSAT is a qualifying paper and does not contribute to the merit list. IB ACIO’s Numerical Aptitude section has no equivalent in UPSC.

Reasoning

Low overlap. UPSC CSAT has some reasoning, but IB ACIO’s section is more detailed and intensive.

English

Moderate. UPSC tests comprehension, especially in Mains. IB ACIO’s English section is simpler and more grammar-focused.

General Awareness

High overlap, but the depth differs significantly. UPSC Prelims GS Paper 1 and IB ACIO Current Affairs test many of the same events.

UPSC expects an analytical understanding of implications. IB ACIO Tier 1 mostly tests factual recall.

General Studies

Significant overlap at Prelims level. History, Geography, Polity, Economy, and Science appear in both. UPSC requires far greater depth.

Complete NCERTs plus standard references for a single subject. IB ACIO Tier 1 GS is comparable to UPSC Prelims difficulty, not UPSC Mains.

Is IB ACIO Closer to UPSC or SSC?

IB ACIO syllabus is closer to UPSC Prelims than SSC CGL in terms of GS source material. Subject overlap is high across History, Polity, Economy, and Geography.

Key comparisons:

• Overall depth: IB ACIO demands far less depth per subject than UPSC. No answer writing at the length UPSC Mains requires.
• History, Polity, Economy, Geography: Same source material as UPSC Prelims GS. UPSC aspirants cover this at greater depth than IB requires.
• Current Affairs: UPSC current affairs preparation is more than sufficient for IB ACIO.
• Arithmetic: IB ACIO has a dedicated 20-mark arithmetic section with calculation speed requirements. UPSC CSAT is slower-paced and does not build this speed.

Can the IB ACIO Syllabus Change in the Next Cycle?

The syllabus for IB ACIO 2026 is expected to follow the same structure as the 2025 notification unless MHA releases a revised recruitment notification.

The core IB ACIO syllabus subjects have remained consistent across cycles. Tier 1 has always covered Current Affairs, General Studies, Numerical Aptitude, Reasoning, and English. Each has 20 questions. The structure has not changed in recent notifications.

What changes each cycle:

• Current Affairs topics (tied to recent events)
• Specific questions within static sections
• Difficulty level