CSBC Bihar Special Branch Constable Eligibility 2026: Age Limit, Qualification

Introduction: Why This Eligibility Guide Is Extremely Important

Every year when Bihar Police recruitments are released, lakhs of candidates rush to fill the online form on the very first day. Unfortunately, a very big percentage of these applications never reach the exam stage. The reason is simple – candidates do not understand the eligibility rules properly.

The CSBC Bihar Special Branch Constable Eligibility 2026 works like a strict filter. If even one condition is not fulfilled, your form will be rejected silently. There is no email warning, no correction window, and no refund of the application fee.

That is why this blog is written with one clear goal: to help you decide safely whether you should apply or not. This is not just a rewritten notification. This is a practical eligibility guide with explanations, examples, common mistakes, and safe-side checks that experienced aspirants always follow.

If you read this article completely, you will know exactly where you stand.

CSBC Bihar Special Branch Constable Eligibility 2026 – At a Glance

This table gives a quick snapshot, but the real clarity comes from understanding the details below.

Educational Qualification – Full Clarity With Practical Scenarios

Minimum Qualification Required

As per the official rules of CSBC Bihar Special Branch Constable Eligibility 2026, every applicant must:

• Pass 12th (Intermediate) from a recognised board
• Have the result declared on or before 05 March 2026

Recognised boards include:

• Bihar School Examination Board (BSEB)
• CBSE
• ICSE
• Any recognised State Board

Diploma, ITI, or skill certificates do not replace the 12th requirement.

Important Truth About 12th Appearing Candidates

This is where maximum candidates make mistakes.

If you are:

• Appearing in 12th exam
• Exam completed but result not declared
• Waiting for compartment or improvement result

Then you are not eligible under CSBC Bihar Special Branch Constable Eligibility 2026.

CSBC does not allow provisional eligibility. During document verification, original marksheets are checked strictly.

Higher Qualification Candidates – Reality Check

Many candidates believe that graduation or post-graduation gives extra advantage. This is not true.

• Graduates are eligible
• Postgraduates are eligible
• But no extra marks, no preference, no weightage is given

Selection depends only on written exam marks and physical standards.

Age Limit for CSBC Bihar Special Branch Constable 2026 – Deep Explanation

Age limit is the most critical and risky part of eligibility. Even a single-day mismatch leads to rejection.

Official Age Cut-Off Date

Your age will be calculated as on:

01 August 2026

Only the date of birth mentioned in the 10th certificate is considered final. Aadhaar card, PAN card, or affidavit DOB is not accepted.

Category-Wise Age Limit Table (Official)

Age Relaxation Rules – Explained With Real Examples

BC / EBC Category

• BC/EBC male candidates get 2 years relaxation
• BC/EBC female candidates get 3 years relaxation

Example:
If a BC male candidate is 26 years and 10 months old on 01 August 2026, he is still eligible.

SC / ST Category

• SC and ST male & female candidates get 5 years relaxation

Example:
If an ST female candidate is 29 years old on the cut-off date, she can apply safely.

Government Employee Relaxation

Candidates who are already working as Bihar Government employees may get additional relaxation as per government rules. Such candidates must read the official notification carefully and keep service certificates ready.

Common Age-Related Mistakes That Cause Rejection

Based on previous CSBC recruitments, these mistakes are extremely common:

• Calculating age using today’s date instead of cut-off date
• Assuming age relaxation without valid caste certificate
• Using Aadhaar DOB instead of matric certificate
• Ignoring leap year and month difference
• Applying even if overage by 1 or 2 days

CSBC does not provide any correction window once the form is submitted.

Physical Standards (Eligibility Requirement – Very Important)

Many candidates think that physical standards are checked only after the written exam, but not meeting physical eligibility automatically disqualifies you, no matter how good your written score is.

For CSBC Bihar Special Branch Constable Eligibility 2026, candidates must meet the following minimum physical standards as mentioned in the official notification.

Physical Standards Table (Height, Chest & Weight)

Important Notes on Chest Measurement

• Chest measurement is only applicable for male candidates
• Minimum 5 cm chest expansion is mandatory
• Measurement is done by authorised officials during PST

Minimum Weight for Female Candidates

• All female candidates must have a minimum body weight of 48 kg
• Weight is checked during the Physical Standard Test

Very Important Physical Eligibility Clarifications

• No relaxation is allowed in height, chest, or weight
• Candidates failing physical standards are declared unfit immediately
• Physical eligibility is qualifying in nature, but mandatory

Nationality and Domicile Rules Explained

Nationality Requirement

• Candidate must be an Indian citizen

Foreign nationals and OCI card holders are not eligible.

Bihar Domicile Rule

• Bihar domicile candidates get reservation benefits
• Candidates from other states can apply
• Other state candidates are treated as Unreserved (UR)

To claim reservation, valid Bihar domicile and caste certificates issued by competent authority are mandatory.

Who Should NOT Apply – Honest Warning

You should avoid applying if:

• You are only 10th pass
• Your 12th result is awaited or provisional
• Your age exceeds limit even after relaxation
• Your caste or domicile certificates are invalid
• Your DOB details differ across documents

Applying despite ineligibility wastes money and blocks serious candidates.

Eligibility vs Selection – Understanding the Difference

Many beginners confuse eligibility with selection.

Eligibility only means:

• You are allowed to write the exam
• You can appear in physical test

Final selection depends on:

• Written exam score
• Meeting physical standards
• Successful document verification
• Medical fitness

Being eligible does not guarantee selection.

Important Links for Applicants

Use the descriptive links below to access the official pages directly.

Frequently Asked Questions on Eligibility

What is the minimum qualification for CSBC Bihar Special Branch Constable Eligibility 2026?

Candidates must have passed 12th (Intermediate) from a recognised board before the last date of application.

What is the age cut-off date for eligibility?

Age is calculated strictly as on 01 August 2026.

Are 12th appearing candidates eligible?

No. Only candidates with declared 12th results are eligible.

Do graduates get any additional benefit?

No. Graduation does not provide any extra advantage in this recruitment.

Can candidates from other states apply?

Yes, but they will be treated as Unreserved category candidates.

Final Checklist Before Applying

Before filling the online form, double-check:

• Your exact age on 01 August 2026
• Your date of birth in 10th certificate
• Your 12th marksheet availability
• Valid caste and domicile certificates

If everything matches, you can apply confidently.

Final Words for Serious Aspirants

This CSBC Bihar Special Branch Constable Eligibility 2026 guide is designed to protect you from rejection and confusion. Bookmark this page, read it carefully, and share it only with serious aspirants.

Understanding eligibility properly is the first step towards selection. Preparation comes next.

This article is written for informational purposes based on official recruitment rules. Candidates must always verify details from the official notification before applying.