UPSC ISS Answer Key 2026 Out: Download Statistics Paper 1 & 2 PDF Link

UPSC IES/ISS Recruitment 2026 : Eligibility Criteria 

Here is the detailed structural layout for the UPSC IES/ISS Recruitment 2026 Eligibility Criteria in a clean, non-table format:

1. Age Limit Parameters

The benchmark baseline age limits are evaluated uniformly for general candidates, with differing calculation reference dates depending on the selected examination stream:

• For Indian Economic Service (IES) / Indian Statistical Service (ISS):
  • Minimum Age: 21 Years
  • Maximum Age: 30 Years
  • Calculation Date: Candidates must meet this bracket as of August 1, 2026 (Applicants must be born between August 2, 1996, and August 1, 2005).
• For Engineering Services Examination (Commonly called IES/ESE):
  • Minimum Age: 21 Years
  • Maximum Age: 30 Years
  • Calculation Date: Candidates must meet this bracket as of January 1, 2026 (Applicants must be born between January 2, 1996, and January 1, 2005).

Category-Wise Upper Age Relaxations

• SC / ST Candidates: Up to 5 Years relaxation (Max limit 35 Years).
• OBC (Non-Creamy Layer) Candidates: Up to 3 Years relaxation (Max limit 33 Years).
• Persons with Benchmark Disabilities (PwBD): Up to 10 Years relaxation (Max limit 40 Years).
• Ex-Servicemen & Commissioned Officers: Up to 5 Years relaxation.
• Central Government Servants: Up to 5 Years structural relaxation under specific office cadres.

2. Educational Qualifications

Academic prerequisites vary fundamentally according to the targeted technical or specialized civil service stream:

• Indian Economic Service (IES): Must hold a Post-Graduate (Master’s) Degree in Economics, Applied Economics, Business Economics, or Econometrics from a government-recognized university.
• Indian Statistical Service (ISS): Must possess a Bachelor’s Degree with Statistics, Mathematical Statistics, or Applied Statistics as a major subject, OR hold a Master’s Degree in Statistics, Mathematical Statistics, or Applied Statistics.
• Engineering Services (Technical IES Officer): Must hold a Bachelor’s Degree in Engineering (B.E. / B.Tech) in one of the four recognized foundational engineering branches: Civil, Mechanical, Electrical, or Electronics & Telecommunication Engineering. (M.Sc. degree holders in Wireless Communication, Electronics, Radio Physics, or Radio Engineering are also eligible for specific specialized communication cadres).

3. Nationality & Citizenship Rules

An applicant intending to lock their profile grid must belong to one of the following demographic parameters:

• A citizen of India.
• A subject of Nepal or Bhutan.
• A Tibetan refugee who permanently migrated to India before January 1, 1962.
• A Person of Indian Origin (PIO) migrating permanently from Pakistan, Burma, Sri Lanka, East African countries, or Vietnam, provided they possess a formal certificate of eligibility issued by the Government of India.

UPSC IES/ISS Recruitment 2026 : Vacancy Details

Exam Paper Structure & Scoring Matrix

The Indian Statistical Service examination is a composite evaluation framework totaling 1000 marks. Official provisional answer keys are issued exclusively for the two objective modules, as the remaining papers utilize conventional subjective evaluation criteria:

• Statistics Paper I (Objective): 200 Marks (Evaluated via multi-choice questions assessing probability, statistical inference, and basic data computing).
• Statistics Paper II (Objective): 200 Marks (Evaluated via multi-choice questions covering regression analysis, sampling theory, and time-series metrics).
• Descriptive Tiers (No Key Released): Includes General English (100 Marks), General Studies (100 Marks), Statistics Paper III (200 Marks), and Statistics Paper IV (200 Marks).