What Do You Need for IFoS?
Indian Forest Service Exam at a Glance
UPSC’s Indian Forest Service Examination recruits officers for an All-India Service dedicated to forests, wildlife and the environment.
1,046 candidates qualified for the 2026 IFoS Mains, as reported. Always confirm details on upsc.gov.in.
Who Is Eligible for IFoS?
1. Age
21–32 years, with relaxation for reserved categories as per rules.
2. Qualification
A bachelor’s degree with at least one of: Animal Husbandry & Veterinary Science, Botany, Chemistry, Geology, Mathematics, Physics, Statistics, Zoology — or a degree in Agriculture, Forestry or Engineering.
3. Attempts
Same as the Civil Services Exam — 6 for General, 9 for OBC, unlimited for SC/ST within the age limit.
4. Physical fitness
Must meet the medical and physical standards, including a walking test.
Selection Process
Three stages. Prelims is only for screening.
Prelims (CSE)
The Civil Services Preliminary Exam, with a separate IFoS cut-off.
Mains
Six descriptive papers in English — 1400 marks.
Interview
Personality test of 300 marks.
Final merit
Mains + interview = 1700 marks, then medical and walking test.
See our UPSC Prelims page for the common screening exam.
IFoS Mains Pattern
Six descriptive papers, 3 hours each, answered in English.
| Paper | Marks | Time |
|---|---|---|
| General English | 300 | 3 h |
| General Knowledge | 300 | 3 h |
| Optional subject 1 — Paper I | 200 | 3 h |
| Optional subject 1 — Paper II | 200 | 3 h |
| Optional subject 2 — Paper I | 200 | 3 h |
| Optional subject 2 — Paper II | 200 | 3 h |
| Mains total | 1400 |
2026 mains: 22–29 November 2026 (no paper on 24 November), as reported.
Optional Subjects
Choose any two, subject to the restrictions in the notification.
Some combinations are not allowed (for example, two engineering subjects, or Agriculture with Agricultural Engineering or Animal Husbandry). Check the notification.
Physical and Medical Standards
Forest work needs field fitness. Selected candidates are tested before appointment.
Walking test — men
25 km within 4 hours.
Walking test — women
14 km within 4 hours.
Medical exam
Height, chest, eyesight and overall health standards as per the rules.
Standards as per recent notifications; check the current rules.
Free IFoS Study Material
Notes for the common papers and popular optionals.
These resources are being added step by step. Pages marked “Coming soon” are not published yet.
General English
Essay, précis, comprehension and grammar.
Coming soon →General Knowledge
Current affairs, environment and ecology.
Coming soon →Forestry Optional
Silviculture, forest management and policy.
Coming soon →Botany & Zoology
Notes for the popular science optionals.
Coming soon →UPSC Prelims
The common screening stage.
Explore →How to Prepare for IFoS
Two optionals carry 800 of 1400 mains marks — choose them wisely.
Clear CSE Prelims
The IFoS cut-off is usually higher than the CSE cut-off — aim well above it.
Pick strong optionals
Choose subjects from your degree with good overlap, if allowed.
Focus on environment
Ecology, forests, wildlife and climate change help in GK and the interview.
Write in English daily
All papers are in English — practise essays and précis.
Solve past papers
Practise previous IFoS optional papers under time.
Build fitness
Walk long distances regularly to prepare for the walking test.
IFoS 2026 Dates
Prelims (with CSE): 24 May 2026. Prelims result: 15 June 2026. Mains: 22–29 November 2026, as reported. The 2027 cycle will be notified with the Civil Services Exam. Always check the official website.
IFoS FAQs
What is the Indian Forest Service?
One of India’s three All-India Services, along with the IAS and IPS. IFoS officers manage forests, wildlife and the environment in state forest departments and central bodies. Official information is on upsc.gov.in.
Is IFoS prelims separate?
No. IFoS candidates take the Civil Services Preliminary Exam. A separate cut-off is used to shortlist candidates for the IFoS Mains.
Can I apply for both IAS and IFoS?
Yes. You can apply for both in the same application if you meet the IFoS degree requirement, and take both mains if you qualify.
Are there restrictions on optional subjects?
Yes. Some combinations are not allowed — for example, Agriculture with Agricultural Engineering, or more than one engineering subject. Check the notification for the full list.
What is the age limit?
21–32 years, with relaxation for SC/ST (5 years), OBC (3 years), PwBD and others, as per rules. Attempt limits are the same as for the Civil Services Exam.
In which language is the mains written?
All IFoS Mains papers are answered in English.