Union Public Service Commission · Civil services
Indian Forest Service Examination
Indian Forest Service officers. The Prelims is the same as CSE Prelims; IFoS 2026 was for about 80 vacancies.
- Posts
- 80
- Stages
- Prelims (the CSE Prelims) → Mains → Interview
- Final merit
- 1700 marks
Latest: IFoS 2026: Mains from 22 Nov 2026 (7 days). IFoS 2027: Prelims with CSE on 23 May 2027.
Official notification and PDFs
Checked 14 Nov 2026Each link opens the file on UPSC's own website.
- NoticeIFoS Mains 2026 timetable (PDF) ↗17 Sept 2026
- ResultIFoS 2026 Prelims result (PDF) ↗15 Jun 2026
- ResultIFoS 2025: marks of recommended candidates (PDF) ↗14 May 2026
- ResultIFoS 2025 final result (PDF) ↗8 May 2026
- AdvertisementIFoS 2026 notice (PDF) ↗6 Feb 2026
Exam pattern
Negative marking: Prelims (shared with CSE): one-third of the marks of a question is deducted for each wrong answer.
Mains
| Paper | Questions | Marks | Time | Counts for merit? |
|---|---|---|---|---|
| Paper I: General English | — | 300 | 3 hours | Yes |
| Paper II: General Knowledge | — | 300 | 3 hours | Yes |
| Papers III–VI: two optional subjects, two papers each200 marks per paper | — | 800 | 3 hours each | Yes |
| Merit marks from this stage | 1400 |
Interview: 300 marks. Final merit: Mains + Interview = 1700 marks.
Previous year papers
Pick "IFoS" in the list on the UPSC page to see every year's question booklet.
10 questions · 10 min · −⅓ per wrong
Indian Polity: Constitution basics (Test 1)
Ten core questions on the Preamble, Fundamental Rights, DPSP and Parliament, asked across every state PSC.
10 questions · 10 min · −⅓ per wrongModern India and the freedom struggle (Test 1)
Ten questions from 1857 to 1947, a high-weight area in every state PSC Prelims.
Dates from the UPSC calendar
Full calendar →| Adv. no. | Post | Posts | Stages | Exam dates | Status |
|---|---|---|---|---|---|
| IFoS 2027 | Indian Forest Service (Mains) 2027 | — | Mains | 21 Nov 2027 (7 days) | For those who clear IFoS Prelims |