CSIR Assistant Section Officer Age Limit 2026 is one of the key eligibility conditions in Advertisement No. E-I/RC/2026/2. The Council of Scientific and Industrial Research (CSIR) invited applications for 100 Assistant Section Officer (ASO) posts from eligible non-recommended candidates of the UPSC Civil Services Examination 2024. The official advertisement prescribed a maximum age of 33 years as on the closing date of the online application, with specified relaxations for SC/ST, OBC (NCL), PwBD, Ex-Servicemen and CSIR departmental candidates.
The application window ran from 23 June 2026 to 13 July 2026, 5:00 PM. CSIR has since moved this recruitment into the Computer Proficiency Test (CPT) stage. This guide explains the age rule, DOB calculation, relaxation, eligibility, selection and document checks for the 2026 cycle.
CSIR Assistant Section Officer Age Limit 2026 at a Glance
| Item | Official rule |
|---|---|
| Post | Assistant Section Officer (ASO), General / Finance & Accounts / Stores & Purchase |
| Advertisement | E-I/RC/2026/2 |
| Maximum age | Not exceeding 33 years |
| Age reference date | Closing date of online application |
| Application closing date | 13 July 2026 at 5:00 PM |
| SC/ST relaxation | 5 years |
| OBC (NCL) relaxation | 3 years |
| PwBD (UR) relaxation | 10 years |
| PwBD (SC/ST) relaxation | 15 years |
| PwBD (OBC) relaxation | 13 years |
| Ex-Servicemen | 3 years after deduction of actual military service from actual age |
| CSIR departmental candidates | 5 years |
| Total vacancies | 100 |
The official CSIR advertisement states that the upper age limit is 33 years as on the closing date. The notification does not frame this as a separate 18–33 age range; it specifies an upper ceiling and then lists applicable relaxations. Official CSIR Assistant Section Officer Advertisement
What Does “Not Exceeding 33 Years” Mean?
For a candidate without an applicable relaxation, the relevant question is whether the candidate had exceeded 33 years on 13 July 2026, the application closing date.
A candidate who had turned exactly 33 on the closing date satisfies the numerical upper-age condition. A candidate who was already 34 on that date exceeds the basic limit. Exact day and month matter, so a simple subtraction of birth years can be misleading.
Examples:
- Born 13 July 1993: exactly 33 years on 13 July 2026.
- Born 14 July 1993: 32 years, 11 months and 29 days on 13 July 2026.
- Born 12 July 1993: 33 years and 1 day on the closing date.
- Born 13 July 1992: exactly 34 years and above the basic 33-year ceiling.
Use the Age Calculator to calculate exact age in years, months and days for a chosen date.
Was There a Minimum Age for CSIR ASO?
The 2026 ASO advertisement specifically states an upper age condition of not exceeding 33 years. It does not separately prescribe a conventional minimum-age number in that age-limit clause. That does not mean every younger candidate could apply.
The recruitment had a specific eligibility route: applicants needed a university degree and had to be non-recommended candidates of UPSC Civil Services Examination 2024, according to the list/details available through the UPSC Pratibha Setu Portal. Therefore, the CSE-2024 condition was an essential eligibility filter independent of age.
CSIR ASO Age Relaxation 2026
CSIR provided several categories of upper-age relaxation. Candidates had to satisfy the relevant category conditions and support the claim with appropriate documents.
| Category | Relaxation beyond 33 years | Illustrative upper age |
|---|---|---|
| SC/ST | 5 years | 38 years |
| OBC (NCL) | 3 years | 36 years |
| PwBD (UR) | 10 years | 43 years |
| PwBD (SC/ST) | 15 years | 48 years |
| PwBD (OBC) | 13 years | 46 years |
| CSIR departmental candidate | 5 years | 38 years |
These are arithmetic illustrations of the relaxation amounts stated in the notification. Actual eligibility depends on the candidate’s category and valid documentation. For Ex-Servicemen, the notification specifies 3 years after deduction of actual military service from actual age on the closing date, so this should not be treated as a simple flat addition.
Ex-Servicemen Age Calculation for CSIR ASO
The Ex-Servicemen rule differs from ordinary SC/ST or OBC relaxation. CSIR specifies deduction of actual military service from actual age as on the closing date, followed by the prescribed three-year margin.
For example, if a candidate is 35 years old on 13 July 2026 and has completed two years of qualifying military service, the calculation cannot simply be “35 + 3”. Candidates should keep their service records and verify the precise calculation against the official recruitment rules.
CSIR ASO Eligibility Beyond Age
Age alone was not sufficient for this recruitment. The official advertisement imposed educational and UPSC-related conditions.
University degree
The candidate had to possess a university degree. The final result had to be declared on or before the last date of receipt of online applications. The date of declaration of the result or issuance of the marks sheet was treated as the date of acquiring the qualification.
Non-recommended UPSC CSE 2024 candidate
This was the unusual feature of the recruitment. It was not an open ASO examination for all graduates. CSIR specifically invited eligible non-recommended candidates of UPSC Civil Services Examination 2024. A candidate who met the age condition but did not fall within this eligibility route could not claim eligibility merely because they held a degree.
Citizenship
The general conditions state that the applicant must be a citizen of India.
How Many CSIR ASO Vacancies Were There?
The advertisement announced 100 vacancies:
| ASO cadre | Total vacancies |
|---|---|
| Assistant Section Officer (General) | 61 |
| Assistant Section Officer (Finance & Accounts) | 18 |
| Assistant Section Officer (Stores & Purchase) | 21 |
| Total | 100 |
The posts are Group B, Non-Gazetted, Pay Level 7, with a pay matrix of ₹44,900–₹1,42,400.
CSIR ASO Selection Process 2026
CSIR screened applications and shortlisted candidates for a Computer Proficiency Test (CPT), tentatively in a 1:5 ratio, subject to the advertisement’s conditions.
Shortlisting was based on the candidate’s total marks in UPSC CSE 2024, comprising Mains plus Personality Test marks in the relevant mark sheet. The CPT was mandatory for further consideration.
The CPT carried 100 marks and was qualifying in nature. It tested word processing, spreadsheets, slide preparation and related office-computer exercises. Minimum thresholds were 40 marks for UR, 37 for EWS/OBC, 35 for SC/ST and 30 for PwBD candidates.
Final selection was based on the relevant UPSC CSE 2024 marks, subject to qualifying in the CPT. A single merit list was prepared, followed by cadre allocation among General, Finance & Accounts and Stores & Purchase considering merit and the candidate’s choice.
CSIR ASO Date of Birth Proof and Document Verification
Age eligibility is ultimately a document-based condition. The advertisement instructed applicants to upload proof of date of birth along with educational certificates and other required documents. Shortlisted candidates had to bring original documents for verification.
If an age-relaxation claim could not be substantiated with valid documents, candidature could be cancelled. Candidates should therefore keep their DOB record, caste/community certificate, disability certificate, ex-servicemen/service documents or CSIR employment proof, as applicable, consistent with the application.
For a broader explanation of DOB documents and mismatches in government recruitment, see Date of Birth Proof for Government Jobs in India.
Practical CSIR ASO Age-Eligibility Examples
| Candidate DOB | Age on 13 July 2026 | Basic 33-year test |
|---|---|---|
| 13 July 1993 | 33 years | Meets basic upper-age condition |
| 14 July 1993 | 32 years 11 months 29 days | Meets basic upper-age condition |
| 12 July 1993 | 33 years 1 day | Still within the numerical 33-year ceiling |
| 13 July 1992 | 34 years | Exceeds basic limit; relaxation would be needed |
| 13 July 1990 | 36 years | Above basic limit; possible only if a valid relaxation applies |
These examples show why the exact cutoff date matters. A person who is “33 sometime in 2026” is not automatically eligible or ineligible; the relevant age must be established on the notification’s reference date.
CSIR ASO 2026 Important Dates and Current Stage
The official advertisement opened registration on 23 June 2026 at 10:00 AM and closed applications on 13 July 2026 at 5:00 PM. CSIR has subsequently published the CPT schedule and admit-card information for the ASO recruitment. The original application window should therefore not be confused with the current examination stage.
The official CSIR recruitment page lists the ASO CPT schedule under Advertisement E-I/RC/2026/2. Candidates who applied should rely on the latest CSIR notices for exact test and admit-card instructions: CSIR SO & ASO recruitment updates.
Common Mistakes When Checking CSIR ASO Age
- Using today’s date instead of the closing date: the advertisement uses the application closing date.
- Calculating only by birth year: exact day and month can change the result.
- Adding category relaxation without proof: relaxation must be supported by the required documents.
- Ignoring the UPSC CSE 2024 condition: a degree and correct age alone were not enough.
- Confusing application dates with CPT dates: the application window closed in July, while the recruitment later moved to CPT.
- Assuming Ex-Servicemen relaxation is a flat addition: the notification specifies a service-deduction formula.
Quick CSIR ASO Eligibility Checklist
- Check that your DOB satisfies the 33-year upper-age condition on 13 July 2026, or that a valid relaxation applies.
- Confirm that you fall within the specified non-recommended UPSC CSE 2024 candidate pool.
- Confirm that your university degree was acquired by the application closing date.
- Keep your DOB proof and educational certificates ready.
- If claiming SC/ST, OBC (NCL), PwBD, Ex-Servicemen or CSIR departmental relaxation, verify the relevant certificate or service record.
- If shortlisted, follow CSIR’s CPT and document-verification instructions exactly.
Frequently Asked Questions
What is the CSIR Assistant Section Officer age limit in 2026?
The basic upper age limit is 33 years as on the closing date of the online application under Advertisement E-I/RC/2026/2.
What was the CSIR ASO 2026 closing date?
The last date for registration and submission of the online application was 13 July 2026 at 5:00 PM.
Is there age relaxation for OBC candidates?
Yes. The advertisement provides 3 years of upper-age relaxation for OBC (NCL) candidates, subject to applicable conditions and documents.
How much age relaxation is available for SC/ST candidates?
SC/ST candidates receive 5 years of upper-age relaxation under the advertisement.
Can any graduate apply for CSIR ASO 2026?
No. This recruitment was specifically for eligible non-recommended candidates of UPSC Civil Services Examination 2024 who also possessed a university degree and satisfied the other conditions.
How should I calculate my age for a government recruitment cutoff?
Use the exact date of birth and the notification’s specified cutoff date. The Age Calculator can help calculate the exact years, months and days between those dates.
Final Takeaway
For CSIR Assistant Section Officer Recruitment 2026, the core age rule was a maximum of 33 years on the closing date, 13 July 2026. The notification then provided specific upper-age relaxations for SC/ST, OBC (NCL), PwBD, Ex-Servicemen and CSIR departmental candidates. But age was only one part of eligibility: the recruitment was specifically tied to non-recommended UPSC CSE 2024 candidates holding a university degree.
If you are checking eligibility for a government recruitment, always calculate age against the exact date written in that notification and keep the DOB document used for verification consistent with your application. For a general explanation of exact-date calculations, read How to Calculate Your Exact Age on Any Date.
Sources: CSIR official Advertisement E-I/RC/2026/2 and current CSIR recruitment updates. Image credits: Adbh266 / Wikimedia Commons (CC BY-SA 3.0); Singhprtk / Wikimedia Commons (CC BY-SA 4.0).