| IAS Optional Syllabus | UPSC Syllabus for Optional Subjects |
| Agriculture – UPSC Syllabus | Zoology – UPSC Syllabus |
| Animal Husbandry & Veterinary Science – UPSC Syllabus | IAS Syllabus – Assamese (Literature) |
| Anthropology – UPSC Syllabus | IAS Syllabus – Bengali (Literature) |
| Botany – UPSC Syllabus | IAS Syllabus – Bodo (Literature) |
| Chemistry – UPSC Syllabus | IAS Syllabus – Dogri (Literature) |
| Civil Engineering – UPSC Syllabus | IAS Syllabus – Gujarati (Literature) |
| Commerce & Accountancy – UPSC Syllabus | IAS Syllabus – Hindi (Literature) |
| Economics – UPSC Syllabus | IAS Syllabus – Kannada (Literature) |
| Electrical Engineering – UPSC Syllabus | IAS Syllabus – Kashmiri (Literature) |
| Geography – UPSC Syllabus | IAS Syllabus – Konkani (Literature) |
| Geology – UPSC Syllabus | IAS Syllabus – Maithili (Literature) |
| History – UPSC Syllabus | IAS Syllabus – Malayalam (Literature) |
| Law – UPSC Syllabus | IAS Syllabus – Manipuri (Literature) |
| Management – UPSC Syllabus | IAS Syllabus – Marathi (Literature) |
| Mathematics – UPSC Syllabus | IAS Syllabus – Nepali (Literature) |
| Mechanical Engineering – UPSC Syllabus | IAS Syllabus – Odia (Literature) |
| Medical Science – UPSC Syllabus | IAS Syllabus – Punjabi (Literature) |
| Philosophy – UPSC Syllabus | IAS Syllabus – Sanskrit (Literature) |
| Physics – UPSC Syllabus | IAS Syllabus – Santhali (Literature) |
| Political Science & International Relations – UPSC Syllabus | IAS Syllabus – Sindhi (Literature) |
| Psychology – UPSC Syllabus | IAS Syllabus – Tamil (Literature) |
| Public Administration – UPSC Syllabus | IAS Syllabus – Telugu (Literature) |
| Sociology – UPSC Syllabus | IAS Syllabus – English (Literature) |
| Statistics – UPSC Syllabus | IAS Syllabus – Urdu (Literature) |
