Bihar DSO Mains Exam Date 2025 Out, Check Mains DSO/AD Exam Details

The Bihar Public Service Commission (BPSC) has closed the application process for the Bihar DSO Mains Exam 2025 for candidates who qualified the prelims conducted on 03 August 2025. The last date to submit the Bihar DSO Mains application form was 12 December 2025, and no further applications are being accepted.

With the application window now closed, eligible candidates should shift their focus to exam preparation. The mains examination will be conducted as per the revised exam pattern notified by BPSC, making it crucial for aspirants to thoroughly understand the updated syllabus, exam structure, and marking scheme to perform well in this decisive stage of the selection process.

Bihar DSO Mains Exam Date 2025 Out

BPSC has released the official notice for the Bihar DSO Mains Exam 2025. As per the notification, the District Statistical Officer/Assistant Director (Main) Written Examination will be held on 29 and 30 January 2026. The mains application process was open from 22 November to 12 December 2025 for candidates who qualified the prelims. The Commission has also stated that the exam dates may change due to administrative reasons.

The mains exam will consist of three descriptive papers—General Hindi, General Studies, and Statistics. Details regarding the exam schedule, admit card, and exam-day instructions will be issued shortly. Candidates should now focus on descriptive answer writing, revision, and practising previous year papers to strengthen their mains preparation.

Bihar DSO Recruitment 2025 – Overview

The Bihar DSO Recruitment 2025 is conducted by the Bihar Public Service Commission (BPSC) to fill District Statistical Officer/Assistant Director posts through a multi-stage selection process. The recruitment includes Prelims, Mains, and Document Verification, ensuring the selection of qualified candidates for key statistical roles in the state administration.

BPSC District Statistical Officer Notification 2025 PDF

The BPSC District Statistical Officer Notification 2025 outlines important information, including eligibility requirements, selection procedures, age relaxations, exam pattern, and more. Candidates are advised to carefully read the complete notification before applying online.

A direct link to download the Bihar DSO Notification 2025 PDF is provided here for your convenience. Ensure that you prepare thoroughly in accordance with the exam syllabus and stay informed about any official announcements. Timely application submission is crucial to avoid missing this opportunity.

BPSC District Statistical Officer Notification 2025

BPSC District Statistical Officer Vacancy 2025

The Bihar Public Service Commission has announced a total of 47 posts, out of which 16 are reserved for women. Candidates can check the detailed category-wise vacancies from the table below:

Bihar DSO Mains Application Form Link 2025

The Bihar Public Service Commission (BPSC) has closed the online application process for the Bihar DSO Mains Exam 2025. Candidates who qualified the prelims were required to complete the mains application within the prescribed timeline, and no further applications are being accepted now.

With the application window closed, aspirants should focus fully on exam preparation. This includes revising the syllabus, practising descriptive answer writing, and going through previous years’ question papers to perform well in the Bihar DSO Mains Exam 2025.

Bihar DSO Apply Link 2025 – Click here (Inactive)

Documents Required for Bihar DSO/ Assistant Director Online Form 2025

While filling out the BPSC DSO / Assistant Director Online Form 2025, candidates must keep the following documents ready:

1. Passport-size Photograph

   • Recent colored photograph

   • The background should be white or light-colored

2. Signature

   • Clear signature on white paper

   • Use a black or blue pen only

3. Educational Certificates

   • Master’s Degree in Statistics / Mathematics / Economics from a recognized university

   • The degree must be completed on or before the last date of application submission

   • For exact eligibility, refer to the official notification

4. Caste Certificate (if applicable)

   • Required for candidates belonging to SC/ST/OBC categories

5. ID Proof

   • Aadhaar Card, Voter ID, or any other valid government-issued ID

6. Domicile Certificate

   • Proof of permanent residence (especially important for Bihar state candidates)

7. Income Certificate (if applicable)

   • Mandatory for candidates applying under the EWS (Economically Weaker Section) category

8. Other Certificates (if applicable)

   • PH (Physically Handicapped) Certificate

   • Ex-servicemen Certificate

   • Any other relevant certificates mentioned in the notification

Note: Ensure all scanned documents meet the format and size requirements as stated in the official BPSC notification.

Bihar DSO Exam Fees

Candidates must pay the application fee online to complete the BPSC District Statistical Officer 2025. Applications without the fee will not be accepted.

Fee Details:

• SC/ST/Women/Handicapped/Permanent Bihar Residents: Rs. 150/-
• Gen/ OBC/ EWS/ Others: Rs. 600/
• PH Candidates: Rs. 200

BPSC DSO Eligibility Criteria

Candidates interested in applying should meet the required educational qualifications and age limit shared on the official website.

Educational Qualification

A Master’s Degree in Statistics or Mathematics, or Economics from a recognized University.

Age Limit:

The cutoff date to calculate the age limit is 01 August 2025. Check the minimum and maximum age limits shared on the official website.

• Minimum Age: 21 years
• Maximum Age: 37 years
• Maximum Age: 40 (female)

BPSC District Statistical Officer Exam Pattern

Candidates preparing for the Bihar DSO or Assistant Director Examination should be aware of the latest exam pattern and other details mentioned on the official website. Here, we have shared the BPSC DSO Exam Pattern details.

BPSC DSO Selection Process

The Bihar District Selection Officer (DSO) selection process includes three stages:

1. Preliminary Exam: A 2-hour objective test on General Studies (150 marks). Candidates must score minimum qualifying marks (e.g., 40% for General) to qualify. About ten times the vacancies advance to the Main Exam.
2. Main Exam: Subjective exam with compulsory papers—General Hindi (100 marks, qualifying), General Studies I & II (300 marks each)—plus one optional subject (Economics, Mathematics, or Statistics, 300 marks). Minimum qualifying marks apply.
3. Interview: Conducted for candidates who clear the Main Exam, carrying 120 marks. Approximately 2.5 times the vacancies are called.

The final merit list is based on the Main Exam and Interview scores combined.

BPSC District Selection Officer Salary

Selected candidates for the Bihar District Statistical Officer (DSO) post will receive a competitive salary ranging from ₹53,100 to ₹1,67,800 under Pay Level-9 as per the 7th Pay Commission. Along with the basic pay, they are entitled to several government-approved allowances and benefits, including:

• Dearness Allowance (DA)
• House Rent Allowance (HRA)
• Travel Allowance (TA)
• Other perks and incentives as per Bihar government norms

The salary structure and additional benefits make the Bihar DSO position a highly rewarding government job opportunity in 2025.