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Get the complete UPSC IFS Syllabus 2026 for Prelims, Mains, and Optional subjects with downloadable PDFs. Understand subject-wise topics to plan your preparation effectively for the exam.
IFS Syllabus 2026: The Indian Forest Service (IFS) Examination is conducted by the Union Public Service Commission (UPSC) to recruit officers for forestry services in India. The IFS Syllabus 2026 has been released along with the official notification. Aspirants preparing for the IFS 2026 Exam should be well-versed with the syllabus and exam pattern to ensure thorough preparation. Here we have provided a detailed breakdown of the IFS Prelims and Mains Syllabus, including an overview and subject-wise topics.
The UPSC IFS 2026 exam is conducted in three stages – Prelims (common with Civil Services), Mains (written), and Personality Test, and only the Mains written plus interview marks are counted for final merit. The total marks considered for the final list are 1700 (1400 for Mains written + 300 for Interview).
| UPSC IFS Exam Pattern 2026 | ||||
|---|---|---|---|---|
| Stage / Paper | Details | No. of Questions | Duration | Maximum Marks |
| Prelims – Paper I (GS) | Objective MCQ; common with UPSC CSE; counted only for screening to IFS Mains. | 100 | 2 hours | 200 |
| Prelims – Paper II (CSAT) | Objective MCQ; qualifying only; must score at least 33% to be eligible for IFS Mains. | 80 | 2 hours | 200 (qualifying) |
| Mains – Paper I (General English) | Descriptive paper testing comprehension, writing and English usage; compulsory for all IFS candidates. | – | 3 hours | 300 |
| Mains – Paper II (General Knowledge) | Descriptive paper on GK, current affairs, environment and general awareness; compulsory. | – | 3 hours | 300 |
| Mains – Paper III (Optional Subject Paper I) | Descriptive; first paper of Optional Subject 1 chosen from the approved IFS optional list. | – | 3 hours | 200 |
| Mains – Paper IV (Optional Subject Paper II) | Descriptive; second paper of Optional Subject 1. | – | 3 hours | 200 |
| Mains – Paper V (Optional Subject Paper III) | Descriptive; first paper of Optional Subject 2 chosen from the approved list. | – | 3 hours | 200 |
| Mains – Paper VI (Optional Subject Paper IV) | Descriptive; second paper of Optional Subject 2. | – | 3 hours | 200 |
| Personality Test / Interview | Final stage assessing suitability, personality traits and understanding of forest & environmental issues. | – | – | 300 |
| Total for Final Merit | Only Mains written (1400) + Interview (300) are counted; Prelims is qualifying/screening. | – | – | 1700 |
The Indian Forest Service Examination (IFS) consists of three stages:
The IFS Prelims Exam consists of two papers, Paper 1 General Studies I and Paper 2 General Studies II, also known as CSAT, that are common with the Civil Services Examination (CSE). The syllabus is as follows:
| UPSC IFS Syllabus 2026 – Prelims | |
| Paper | Topics |
| General Studies |
|
| CSAT |
|
The IFS Mains Exam consists of six papers, including 2 compulsory papers and 4 optional subjects. Below is the detailed syllabus for each paper:
Candidates appearing for IFS mains have to give these two compulsory papers along with the optional papers chosen by them. The topics covered in the UPSC IFS syllabus for compulsory papers are provided in the table below:
| UPSC IFS Syllabus 2026 – Compulsory Papers | |
| Subject | Topics |
| General English |
|
| General Knowledge |
|
Candidates must choose two optional subjects, each having two papers (200 marks each). The available subjects are:
| UPSC IFS Syllabus 2026 – Optional Subjects | |
| Subject | Topics |
| Agriculture | Paper I:
Paper II:
|
| Animal Husbandry & Veterinary Science | Paper I:
Paper II:
|
| Chemistry | Paper I:
Paper II:
|
| Agricultural Engineering | Paper I:
Paper II:
|
| Botany | Paper I:
Paper II:
|
| Civil Engineering | Paper I:
Paper II:
|
| Chemical Engineering | Paper I:
Paper II:
|
| Forestry | Paper I:
Paper II:
|
| Mathematics | Paper I:
Paper II:
|
| Mechanical Engineering | Paper I:
Paper II:
|
| Physics | Paper I:
Paper II:
|
| Zoology | Paper I:
Paper II:
|
| Statistics | Paper I:
Paper II:
|
| Geology | Paper I:
Paper II:
|
Candidates who qualify for the IFS Mains Examination will be invited by the commission to appear for the Personality Test (Interview). This stage, known as the UPSC IFS Interview, carries a weightage of 300 marks. The Interview aims to evaluate the candidate’s:
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Candidates must have a bachelor’s degree in one of the specified subjects (Forestry, Agriculture, Botany, Zoology, etc.) from a recognized university.
No, the IFS Prelims is the same as UPSC Civil Services Prelims. Candidates who clear it can appear for either the IFS Mains or IAS Mains, depending on their choice and cut-off marks.
Candidates need to choose two optional subjects, with each subject having two papers.
The IFS Mains exam consists of 1400 marks, including compulsory and optional papers.
The official IFS Syllabus PDF can be downloaded from the UPSC website or from here.
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