Introduction
Every year, thousands of aspirants prepare for various government examinations in search of a stable, prestigious, and meaningful career. Among all these opportunities, the Intelligence Bureau Assistant Central Intelligence Officer (IB ACIO) examination stands apart because it offers candidates an opportunity to become a part of India’s internal intelligence system and directly contribute towards national security.
The IB ACIO examination is not just another government job examination. It is an opportunity to serve the nation while working in one of the most secretive and respected organizations of the country. Due to its excellent career growth, attractive salary, and unique job profile, the examination has become one of the most sought-after examinations among graduates.
What is IB ACIO?
IB ACIO stands for Assistant Central Intelligence Officer Grade-II/Executive. It is a Group ‘C’, Non-Gazetted and Non-Ministerial post under the Ministry of Home Affairs, Government of India.
The Intelligence Bureau (IB) is India’s oldest internal intelligence agency and is responsible for maintaining internal security and collecting intelligence related to national interests.
The primary responsibilities of an IB ACIO officer include:
- Intelligence gathering and analysis.
• Monitoring anti-national activities.
• Counter-terrorism and counter-intelligence operations.
• Collection of sensitive information related to internal security.
• Assisting senior officers in intelligence operations.
• Preparing intelligence reports for policymakers and government authorities.
An IB ACIO officer often works behind the scenes, and the nature of the job makes it one of the most exciting careers in the government sector.
Why is the IB ACIO Examination So Popular?
Prestigious Job Profile
Working in the Intelligence Bureau carries immense respect because the officers directly contribute towards safeguarding the country’s internal security.
Attractive Salary Package
IB ACIO officers are placed under Pay Level-7 of the Pay Matrix.
Basic Pay: ₹44,900 per month.
Apart from the basic pay, officers receive:
- Special Security Allowance (20% of Basic Pay)
• Dearness Allowance (DA)
• House Rent Allowance (HRA)
• Transport Allowance
• Medical Facilities
• Pension and Retirement Benefits
The in-hand salary generally ranges between ₹75,000 to ₹85,000 per month, depending upon the place of posting and applicable allowances.
Career Growth
The promotion hierarchy generally follows the following pattern:
Assistant Central Intelligence Officer Grade-II
Assistant Central Intelligence Officer Grade-I
Deputy Central Intelligence Officer
Assistant Director
Deputy Director
Joint Deputy Director
Additional Director
Dynamic Work Environment
Unlike desk jobs, the work of an intelligence officer is challenging and highly dynamic. Officers often get opportunities to work on important assignments concerning national security.
IB ACIO Eligibility Criteria
Educational Qualification
Candidates must possess a Bachelor’s Degree from a recognized university.
Age Limit
Minimum Age: 20 Years
Maximum Age: 27 Years
Age relaxation is provided to reserved category candidates as per Government of India rules.
Nationality
The candidate must be an Indian citizen.
IB ACIO Selection Process
The selection process consists of three stages.
Tier-I Examination
Objective Type Examination
Marks: 100
Tier-II Examination
Descriptive Examination
Marks: 50
Tier-III Examination
Interview/Personality Test
Marks: 100
The final merit list is prepared on the basis of marks obtained in Tier-I and Tier-II examinations along with qualifying the Interview stage.
Detailed IB ACIO Syllabus 2026
Tier-I Examination Pattern
General Awareness – 20 Questions – 20 Marks
Quantitative Aptitude – 20 Questions – 20 Marks
Logical Reasoning – 20 Questions – 20 Marks
English Language – 20 Questions – 20 Marks
General Studies – 20 Questions – 20 Marks
Total Questions – 100
Total Marks – 100
Duration – 1 Hour
Negative Marking – 0.25 Marks (1/4)
General Awareness and General Studies
Indian History
Ancient, Medieval and Modern History
Indian National Movement
Indian Polity and Constitution
Fundamental Rights and Duties
Parliament and Judiciary
Geography of India and World
Indian Economy
Budget and Economic Survey
Banking and Financial Institutions
Science and Technology
Environment and Ecology
Current Affairs
National and International Events
Government Schemes and Reports
Important Days and Events
Books and Authors
Sports and Awards
Defence Exercises
International Organisations
Quantitative Aptitude
Number System
Simplification
Percentage
Profit and Loss
Simple and Compound Interest
Ratio and Proportion
Average
Partnership
Time and Work
Pipes and Cisterns
Time, Speed and Distance
Boat and Stream
Mensuration
Geometry
Algebra
Data Interpretation
Permutation and Combination
Probability
Logical Reasoning
Alphabet Series
Number Series
Coding-Decoding
Analogy
Classification
Blood Relations
Direction Test
Ranking
Syllogism
Statement and Conclusion
Statement and Assumption
Seating Arrangement
Puzzle
Input and Output
Venn Diagram
Data Sufficiency
English Language
Reading Comprehension
Cloze Test
Para Jumbles
Error Detection
Sentence Improvement
Fill in the Blanks
Synonyms
Antonyms
Idioms and Phrases
One Word Substitution
Active and Passive Voice
Direct and Indirect Speech
Vocabulary
Grammar Rules
Tier-II Syllabus
Essay Writing
English Comprehension
Precis Writing
Current Affairs Based Essays
Social and National Issues
Previous Year IB ACIO Vacancies
IB ACIO 2012= Total Vacancies: 750
IB ACIO 2013= Total Vacancies: 750
IB ACIO 2015= Total Vacancies: 1,434
IB ACIO 2017= Total Vacancies: 1,430
IB ACIO 2020= Total Vacancies: 2,000
IB ACIO 2023= Total Vacancies: 995
IB ACIO 2025= Total Vacancies: 3717
The vacancy trend clearly indicates that the Ministry of Home Affairs releases a substantial number of vacancies whenever recruitment is announced. Therefore, aspirants should not wait for vacancy numbers and should begin their preparation well in advance.
Previous Year Cut-Off Trends
IB ACIO 2023 Tier-I Cut-Off
General Category – 71 Marks
OBC Category – 70 Marks
EWS Category – 70 Marks
SC Category – 65 Marks
ST Category – 65 Marks
IB ACIO 2020 Tier-I Cut-Off
General Category – 72 Marks
OBC Category – 68 Marks
EWS Category – 65 Marks
SC Category – 64 Marks
ST Category – 61 Marks
IB ACIO 2017 Tier-I Cut-Off
General Category – 65 Marks
OBC Category – 60 Marks
SC Category – 50 Marks
ST Category – 50 Marks
What Do the Cut-Off Trends Indicate?
The cut-off trends indicate that the competition level in the examination has increased significantly over the years. For candidates belonging to the General category, scoring 75+ marks in Tier-I is considered a safe score.
Similarly,
OBC candidates should target 72+ marks.
EWS candidates should target 72+ marks.
SC candidates should target 68+ marks.
ST candidates should target 65+ marks.
How to Prepare for IB ACIO 2026?
Focus on Current Affairs
Current affairs play a crucial role in the examination and should be prepared on a daily basis.
Strengthen General Studies
Polity, History, Geography and Economy constitute a significant portion of the paper.
Practice Mock Tests
Regular practice helps improve speed and accuracy.
Improve English and Reasoning
English and Reasoning are scoring sections and can significantly increase overall marks.
Prepare for Descriptive Writing
Essay writing and comprehension practice should be a regular part of preparation.
Final Words
The IB ACIO examination is one of the finest opportunities for graduates who wish to serve the nation while enjoying an exciting and respected career. The job offers excellent salary, immense prestige, and unique professional experiences that are rarely available in other government services.
With vacancies expected to be announced in the coming months, this is the ideal time to begin your preparation. Consistent effort, proper guidance, and a structured study plan can help you secure your place in India’s premier intelligence agency.