The Bihar Public Service Commission (BPSC) has officially announced the Mains examination schedule for the District Statistical Officer (DSO) / Assistant Director (AD) recruitment under Advertisement No. 38/2025. The BPSC DSO Mains Written Examination 2026 is scheduled to be held on 29th and 30th January 2026 at designated exam centres.
Candidates who have qualified for the preliminary exam should carefully review the detailed exam schedule, shift timings, and subject-wise paper information provided below. Prepare thoroughly for the exam to achieve success.
Bihar DSO Mains Exam Date 2026 Out
BPSC has announced the Bihar DSO Mains Exam 2025, scheduled for 29-30 January 2026. The exam will consist of three descriptive papers: General Hindi, General Studies, and Statistics.
The mains application was open from 22 November to 12 December 2025 for qualified prelims candidates. Candidates should focus on answer writing, revision, and practicing previous papers, as detailed exam instructions and admit card information will be released soon.
BPSC DSO Admit Card 2026 – Download Now

Bihar DSO Recruitment 2026 – Overview
Bihar DSO Recruitment 2026, conducted by BPSC, aims to fill District Statistical Officer/Assistant Director posts through Prelims, Mains, and Document Verification, selecting qualified candidates for key statistical roles.
| Particulars | Details |
|---|---|
| Organization | Bihar Public Service Commission |
| Post Name | District Statistical Officer (DSO) |
| Advertisement Number | 38/2025 |
| Vacancies | 47 |
| Prelims Exam Date | 03 August 2025 |
| Mains Exam Date | 29-30 January 2026 |
| Mains Application Window | 22 November – 12 December 2025 |
| Mains Exam Type | Descriptive |
| Website | bpsc.bihar.gov.in |
BPSC DSO Mains Exam Schedule 2026
According to the official examination programme, the Mains exam will be held in two shifts each day. The complete subject-wise schedule is as follows
| BPSC DSO / AD Mains Exam Timetable | |||
| Exam Date | Shift | Time | Subject |
| 29 January 2026 (Thursday) | First Shift | 9:30 AM to 12:30 PM | General Studies – Paper I |
| Second Shift | 2:00 PM to 5:00 PM | General Studies – Paper II | |
| 30 January 2026 (Friday) | First Shift | 9:30 AM to 12:30 PM | General Hindi |
| Second Shift | 2:00 PM to 5:00 PM | Optional Subject | |
Important Instructions for Candidates
The important instructions for candidates to ensure a smooth examination process:
- The examination will be conducted at district headquarters examination centres.
- Candidates must report to the examination centre well before the reporting time.
- Admit card, valid photo ID proof, and other instructions mentioned by BPSC must be followed strictly.
- No change in exam date, shift, or centre will be allowed under any circumstances.
BPSC District Statistical Officer Notification 2026 PDF
The BPSC District Statistical Officer Notification 2025 provides essential details on eligibility, selection process, exam pattern, and more. Candidates should read the full notification carefully before applying online.
A direct link to download the PDF is available. Prepare thoroughly, stay updated with official announcements, and submit your application on time to seize this opportunity.
BPSC District Statistical Officer Vacancy 2025-26
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:
| BPSC District Statistical Officer Vacancy 2025-26 | ||
| Category | Total Posts |
Women (35% Horizontal Reservation)
|
| Unreserved | 19 | 7 |
| Economically Weaker Section (EWS) | 5 | 2 |
| Scheduled Caste | 7 | 2 |
| Scheduled Tribe | 0 | 0 |
| Extremely Backward Class | 9 | 3 |
| Backward Class | 6 | 2 |
| Backward Class Ladies | 1 | 0 |
| Total | 47 | 16 |
Bihar DSO Mains Application Form Link 2025
Bihar Public Service Commission (BPSC) has closed the online application process for the Bihar DSO Mains Exam 2025. Candidates who qualified the prelims needed to complete the mains application within the specified deadline, and no further applications are being accepted at this time.
With the application window closed, aspirants should now focus entirely on exam preparation. This includes thoroughly revising the syllabus, practicing descriptive answer writing, and reviewing previous years’ question papers to enhance their performance in the Bihar DSO Mains Exam 2025. Dedicated preparation is key to achieving success.
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:
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Passport-size Photograph
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Recent colored photograph
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The background should be white or light-colored
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Signature
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Clear signature on white paper
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Use a black or blue pen only
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Educational Certificates
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Master’s Degree in Statistics / Mathematics / Economics from a recognized university
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The degree must be completed on or before the last date of application submission
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For exact eligibility, refer to the official notification
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Caste Certificate (if applicable)
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Required for candidates belonging to SC/ST/OBC categories
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ID Proof
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Aadhaar Card, Voter ID, or any other valid government-issued ID
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Domicile Certificate
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Proof of permanent residence (especially important for Bihar state candidates)
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Income Certificate (if applicable)
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Mandatory for candidates applying under the EWS (Economically Weaker Section) category
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Other Certificates (if applicable)
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PH (Physically Handicapped) Certificate
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Ex-servicemen Certificate
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Any other relevant certificates mentioned in the notification
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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.
| Particulars | Details |
|---|---|
| Exam Name | BPSC DSO / Assistant Director Examination 2025 |
| Exam Stages | Prelims (Online CBT), Mains (Written), Interview |
| Exam Mode | Prelims – Online (Computer-Based), Mains – Offline (Written) |
| Question Type | Multiple Choice Questions (Objective Type) |
| Prelims Total Marks | 150 Marks |
| Mains Total Marks | 1000 Marks |
| Interview Marks | 120 Marks |
| Subjects Covered | General Awareness, English, Numerical Ability, Reasoning, Military Aptitude |
| Prelims Exam Duration | 2 Hours |
| Mains Exam Duration | 3 Hours |
| Marking Scheme | +1 for Correct Answer, -0.25 for Wrong Answer |
| Exam Language | Hindi and English |
BPSC DSO Selection Process
The Bihar District Selection Officer (DSO) selection process includes three stages:
- 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.
- 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.
- 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.
| Also check |
| BPSC DSO Previous Year Question Papers |


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