IES / ISS Exam Pattern & Syllabus
Last verified 31 Jul 2026
The UPSC IES / ISS exam pattern is set out below. Yes — one third of the marks is deducted for each wrong answer in the objective papers. The subject papers are descriptive and carry no negative marking.
UPSC IES / ISS exam pattern
| Paper | Subjects | Questions | Marks | Duration |
|---|---|---|---|---|
| Paper-I | General English | Descriptive | 100 | 3 hours |
| Paper-II | General Studies | Descriptive | 100 | 3 hours |
| Paper-III to VI | General Economics I–III and Indian Economics (IES), or Statistics I–IV (ISS) | Mixed | 200 each | 3 hours each |
| Viva Voce | Interview board | — | 200 | — |
Total marks
Written 1000 marks + Viva Voce 200 marks = 1200 marks.
Where to get the official syllabus
The complete syllabus is printed inside the Examination Notice itself, in the section headed "Scheme and Subjects for the Examination". UPSC does not publish a separate syllabus document, so the notice PDF linked at the foot of this page is the authoritative source.
UPSC does not normalise marks
This is the single most common misconception carried over from SSC. UPSC conducts each paper in one sitting with one question paper, so there are no shifts to equate and no normalisation formula. A published UPSC cut off is a raw mark you could actually have scored on the paper — which is why the figures are clean numbers rather than five-decimal scores.
Answering conventions UPSC enforces
- Question papers are set in both Hindi and English, and answers may be written in either.
- Illegible handwriting attracts a deduction from the total marks — this is stated explicitly in the notice.
- Credit is given for orderly, effective and exact expression with economy of words. Marks are not awarded for superficial knowledge.
- Non-programmable scientific calculators are allowed in conventional (descriptive) papers only, never in objective papers.
- Only the international form of Indian numerals (1, 2, 3…) may be used.