One examination feeds the IAS, IFS, IPS and twenty other Group A and Group B services. The single fact most aspirants get wrong: your Prelims marks are thrown away. Final merit is built only from the Mains written papers and the Personality Test — 2,025 marks in all.
Quick snapshot
- The Civil Services Examination recruits to 23 services and posts — the Indian Administrative Service, Indian Foreign Service and Indian Police Service, plus Group ‘A’ services such as the IRS, IA&AS and Indian Railway Management Service, and Group ‘B’ services such as DANICS, DANIPS and the AFHQ Civil Service.
- Eligibility is a graduate degree in any subject from a recognised university. No minimum percentage is prescribed.
- Age as per the CSE 2026 notification: a candidate must have attained 21 years and must not have attained 32 years on 1 August 2026. The reference date moves every year.
- Attempts: six for every eligible candidate, nine for OBC, unlimited for SC/ST, and for PwBD candidates nine if GL/EWS/OBC and unlimited if SC/ST.
- Prelims is a screening test only. Its 400 marks are not counted in the final order of merit.
- Mains written carries 1,750 marks counted for merit (Papers I to VII), the Personality Test carries 275, grand total 2,025 marks.
- Papers A and B — an Indian language and English — are of matriculation standard and are purely qualifying at 25% each. Fail them and your other answer books are never even looked at.
The UPSC Civil Services Examination has three stages: the Preliminary Examination (two objective papers of 200 marks each), the Main Examination (nine conventional essay-type papers) and the Interview/Personality Test of 275 marks. Only Papers I to VII of the Mains, totalling 1,750 marks, plus the 275-mark Personality Test are counted for ranking — a grand total of 2,025 marks.
Prelims marks do not carry forward. The notification states it plainly: the Preliminary Examination “is meant to serve as a screening test only” and the marks obtained by candidates declared qualified for the Mains “will not be counted for determining their final order of merit”. Within Prelims, General Studies Paper II is itself only a qualifying paper with minimum qualifying marks fixed at 33%; the Mains shortlist is drawn on your General Studies Paper I score.
1. What the examination actually recruits for
Most aspirants say “UPSC” and mean IAS. The examination is much wider than that. The CSE 2026 notification lists 23 services and posts filled on the result of this one examination.
| Tier | Services recruited through CSE |
|---|---|
| All India Services | Indian Administrative Service (IAS), Indian Police Service (IPS) |
| Central Service, Group ‘A’ — diplomatic | Indian Foreign Service (IFS) |
| Other Group ‘A’ services | Indian Audit and Accounts Service; Indian Civil Accounts Service; Indian Corporate Law Service; Indian Defence Accounts Service; Indian Defence Estates Service; Indian Information Service; Indian Postal Service; Indian Post & Telecommunication Accounts and Finance Service; Indian Railway Management Service (Traffic), (Personnel) and (Accounts); Indian Railway Protection Force Service; Indian Revenue Service (Customs & Indirect Taxes); Indian Revenue Service (Income Tax); Indian Trade Service (Grade III) |
| Group ‘B’ services | Armed Forces Headquarters Civil Service (Section Officer’s Grade); DANICS; DANIPS; Pondicherry Civil Service (PONDICS); Pondicherry Police Service (PONDIPS) |
You do not apply separately for each. You give one preference order, and allotment is made keeping in view your rank and the preferences you expressed. This is why rank matters so much: the same examination can end at the IAS or at a Group ‘B’ service depending on where you fall in the merit list.
Where the Indian Forest Service fits
The Indian Forest Service (IFoS) is notified separately, but it shares the same front door. The IFoS notification records that since there may be common candidates, “after the common Screening Test done through Civil Services (Preliminary) Examination, separate lists will be prepared” for the CSE Mains and the IFoS Mains. So you write one Prelims and can be shortlisted for both Mains.
The difference is at the gate and at the Mains. IFoS requires a Bachelor’s degree with at least one of Animal Husbandry & Veterinary Science, Botany, Chemistry, Geology, Mathematics, Physics, Statistics or Zoology, or a Bachelor’s degree in Agriculture, Forestry or Engineering. Its Mains is a different paper set: General English (300 marks), General Knowledge (300 marks) and any two optional subjects with two papers each of 200 marks, followed by an interview.
2. Eligibility: nationality and degree
Nationality is the first filter, and it is not the same for every service.
For IAS, IFS and IPS
- The candidate must be a citizen of India. There is no alternative category.
For the other services
- A citizen of India, or
- a subject of Nepal, or a subject of Bhutan, or
- a Tibetan refugee who came to India before 1 January 1962 intending to settle permanently, or
- a person of Indian origin who migrated from Pakistan, Burma, Sri Lanka or the listed East African countries, Ethiopia or Vietnam, intending to settle permanently.
- Candidates in the last four categories need a certificate of eligibility issued by the Government of India before an appointment offer.
Educational qualification is deliberately broad. A candidate must hold a graduate degree of a university incorporated by an Act of the central or state legislature, or of an institution established by an Act of Parliament or deemed to be a university under Section 3 of the UGC Act, 1956 — or an equivalent qualification. Any discipline. No minimum marks. A B.A. in Telugu Literature and a B.Tech in Computer Science sit at exactly the same starting line.
Final-year students are allowed in. Candidates who have appeared at the qualifying examination but not yet received the result, and those who intend to appear at it, are eligible for admission to the written part. But anyone declared qualified for the Personality Test must produce valid proof of passing — degree certificate, final mark sheet or provisional degree certificate — within the time limit prescribed in the Rules for that year.
3. The age window and the attempts rule
Age is never expressed as a floating “21 to 32 years” in the abstract. It is pinned to a reference date that shifts every cycle. For the Civil Services Examination 2026, the notification states that a candidate must have attained the age of 21 years and must not have attained the age of 32 years on 1 August 2026, that is, born not earlier than 2 August 1994 and not later than 1 August 2005.
| Category | Upper age relaxation | Attempts permitted |
|---|---|---|
| General / EWS | Nil | 6 |
| OBC (eligible for reservation) | Up to 3 years | 9 |
| SC / ST | Up to 5 years | Unlimited (within the age limit) |
| Persons with Benchmark Disabilities (PwBD) | Up to 10 years | 9 if GL/EWS/OBC; unlimited if SC/ST |
| Ex-servicemen, including ECOs/SSCOs, on the conditions in the notification | Up to 5 years | As per the candidate’s own category |
| Defence Services personnel disabled in operations and released as a consequence | Up to 3 years | As per the candidate’s own category |
Two notes on attempts that catch people out. First, an attempt at the Preliminary Examination is deemed an attempt at the Civil Services Examination — and if you actually appear in even one paper of Prelims, that counts. Second, any subsequent disqualification or cancellation of candidature does not undo the attempt; the fact of appearance still counts. Applying and not turning up costs you nothing; walking into the hall and leaving after one paper costs you an attempt.
Candidates belonging to SC, ST or OBC who are also ex-servicemen or PwBD get cumulative relaxation
The notification allows age relaxation under both heads together. But every relaxation depends on being eligible to avail reservation for that category — an OBC candidate in the creamy layer does not get the three years. And the reference date, the relaxation list and the exact wording are reset in each year’s notification. Verify your own date of birth window against the notification for the year you are applying in, and against your matriculation certificate, because once a date of birth is entered in the Commission’s records no change is allowed on any ground whatsoever.
4. Stage one: the Preliminary Examination
Prelims is two compulsory objective papers of 200 marks each, two hours each, 400 marks in total, set in both Hindi and English.
| Paper | Content | Marks | Duration | Counts for? |
|---|---|---|---|---|
| General Studies Paper I | Current events; History of India and the national movement; Indian and World Geography; Indian Polity and Governance; Economic and Social Development; Environment, ecology, bio-diversity and climate change; General Science | 200 | 2 hours | Decides the Mains shortlist |
| General Studies Paper II (commonly called CSAT) | Comprehension; interpersonal and communication skills; logical reasoning and analytical ability; decision making and problem solving; general mental ability; basic numeracy and data interpretation at Class X level | 200 | 2 hours | Qualifying only — 33% |
Read the last column again. The Commission draws the Mains list “based on the criterion of minimum qualifying marks of 33% in General Studies Paper-II” and the total qualifying marks of General Studies Paper I “as may be determined by the Commission”. Paper II is a gate, not a scorer. Clear 33% and the extra marks you worked for in it buy you nothing. Miss 33% and a brilliant Paper I is wasted.
Negative marking is one-third, or 0.33, of the marks assigned to that question, deducted for every wrong answer out of four alternatives. More than one answer marked is treated as wrong and attracts the same penalty. A blank answer attracts no penalty. The arithmetic is unforgiving: a blind guess among four options wins once in four tries against a one-third penalty, so guessing at random loses marks over a full paper. Attempt only where you can knock out at least two options.
How many get through? The notification says the number admitted to the Mains will be about twelve to thirteen times the approximate number of vacancies for that year. The cut-off is therefore relative, not absolute, and is published only after the entire CSE and IFoS process is over.
5. Stage two: the Main Examination and where marks come from
Mains is nine conventional essay-type papers, three hours each. Two are qualifying. Seven are counted.
| Paper | Subject | Marks | Status |
|---|---|---|---|
| Paper A | One Indian language from the Eighth Schedule, chosen by the candidate | 300 | Qualifying, 25% |
| Paper B | English | 300 | Qualifying, 25% |
| Paper I | Essay | 250 | Counted |
| Paper II | General Studies I — Indian heritage and culture, history and geography of the world and society | 250 | Counted |
| Paper III | General Studies II — governance, Constitution, polity, social justice and international relations | 250 | Counted |
| Paper IV | General Studies III — technology, economic development, bio-diversity, environment, security and disaster management | 250 | Counted |
| Paper V | General Studies IV — ethics, integrity and aptitude | 250 | Counted |
| Paper VI | Optional Subject — Paper 1 | 250 | Counted |
| Paper VII | Optional Subject — Paper 2 | 250 | Counted |
| Written total counted for merit | 1,750 | ||
| Personality Test | 275 | Counted, no minimum qualifying marks | |
| Grand total | 2,025 | ||
Papers A and B are of matriculation or equivalent standard and the marks are not counted for ranking. But here is the trap: the Essay, General Studies and Optional answer books are evaluated along with the language papers, and only the answer books of candidates who attain 25% in the Indian language paper and 25% in English are taken cognizance of. A graduate who ignores the language papers because they are “only qualifying” can have 1,750 marks of work discarded unread.
Paper A on the Indian language is not compulsory for candidates hailing from Arunachal Pradesh, Manipur, Meghalaya, Mizoram, Nagaland and Sikkim, and not compulsory for PwBD candidates in the hearing impairment sub-category who were granted exemption from second or third language courses by their Board or university. Papers I to V and the optional papers may be written in English or in any one Eighth Schedule language, and candidates who choose an Eighth Schedule language for Papers I to V may still write the optional papers in English.
6. The Personality Test, and why Prelims marks vanish
Candidates who obtain the minimum qualifying marks in the Mains written part, as fixed by the Commission at its discretion, are summoned for the Interview/Personality Test. The number called is about twice the number of vacancies. The test carries 275 marks and has no minimum qualifying marks.
The board has your career record in front of it and asks questions on matters of general interest. The notification describes the object as assessing “personal suitability for a career in public service” and lists the qualities judged: mental alertness, critical powers of assimilation, clear and logical exposition, balance of judgement, variety and depth of interest, ability for social cohesion and leadership, and intellectual and moral integrity. It is explicitly “not that of a strict cross-examination but of a natural, though directed and purposive conversation”, and it is not meant to be a second knowledge test — that was already done in the written papers.
The merit arithmetic, stated once and clearly
Final rank = marks in Mains Papers I–VII (1,750) + Personality Test (275) = 2,025 marks. Prelims contributes zero. Papers A and B contribute zero. Scoring 180 in Prelims GS Paper I instead of 100 gets you into the Mains hall and nothing more. If two candidates tie on final marks, the Commission breaks the tie first on the common compulsory papers (Essay, GS I–IV) plus the Personality Test taken together, then on those compulsory papers alone, then in favour of the candidate senior in age.
7. Choosing an optional subject
The optional carries 500 of the 1,750 counted marks — a little under 29%. The notification lists 25 subjects plus the literature of any one of 23 languages, including Telugu, Tamil, Kannada, Malayalam, Hindi, Urdu, Sanskrit and English.
| Group | Optional subjects available |
|---|---|
| Humanities and social sciences | Anthropology, Economics, Geography, History, Law, Management, Philosophy, Political Science and International Relations, Psychology, Public Administration, Sociology, Commerce and Accountancy |
| Pure and applied sciences | Agriculture, Animal Husbandry and Veterinary Science, Botany, Chemistry, Geology, Mathematics, Medical Science, Physics, Statistics, Zoology |
| Engineering | Civil Engineering, Electrical Engineering, Mechanical Engineering |
| Literature | Literature of any one of 23 listed languages, including English |
There is no “scoring” optional. Mark patterns shift from year to year and the Commission does not publish subject-wise scaling, so any claim that one subject is worth 40 extra marks is invention. Choose on four tests instead.
Syllabus overlap with General Studies
Geography, History, Political Science and IR, Public Administration, Sociology and Economics overlap heavily with GS Papers I to III and with Prelims GS Paper I. That overlap is a genuine time saving — you revise the same material twice for different papers.
Can you write a clean three-hour answer in it?
Both optional papers are conventional essay type and three hours long. A subject you can calculate in but not write about in prose is a bad fit. Download two or three years of that subject’s question papers from the UPSC previous question papers page and try writing one full paper before you commit.
Does material exist in your medium?
If you plan to write in Telugu, Hindi or another Eighth Schedule language, check that standard books and past answer material exist in that medium for your subject. For the literature options and mainstream social sciences they do; for some technical options they are thin.
Your degree is an advantage, not an obligation
An engineer may pick Mechanical Engineering and save months of groundwork, or pick Sociology and gain GS overlap. Both are defensible. Note that the optional subject is locked in the Examination Specific form, and the notification states no request for change will be entertained once that form is submitted.
8. A realistic preparation sequence
The syllabus is published in the notification itself, and it is the only authentic syllabus. Print it. Everything below is sequencing, not a shortcut.
Months 1–3: NCERT grounding
Read NCERT textbooks for History, Geography, Polity, Economics and basic Science from Class VI to XII. These are free on the NCERT portal. They are not “school books” here — they are the vocabulary layer. Without them, standard references read as noise. Make one set of short notes per subject, nothing elaborate.
Months 3–8: standard references and primary government material
Move to one standard reference per GS area, and pair each with primary official material: the Constitution of India text for Polity, the Economic Survey and Union Budget documents for Economy, India Year Book and PIB releases for schemes and current affairs, and the annual reports of the relevant ministries. One reference per subject, read twice, beats four read once.
Throughout: one newspaper, consolidated monthly
Current events appear in Prelims GS Paper I and across Mains GS II and III. Read one national daily, and once a month compress the month into two pages linked to syllabus headings. Reading without consolidating produces recall that fails in the hall.
Optional subject in parallel, not after
Start the optional alongside GS, not after Prelims. Two 250-mark papers cannot be built in the few months between the Prelims and the Mains, and candidates who postpone it are the ones who clear Prelims and then collapse in the Mains.
Answer writing from month four, not month twelve
Mains is nine handwritten papers of three hours each — a writing-speed and structuring problem as much as a knowledge problem. Take the actual question papers from the UPSC previous question papers archive, write full-length answers under the clock, and get them marked on structure and relevance rather than length. Essay and Ethics reward practice more than reading, because both test approach.
The last 90 days before Prelims: objective mode only
Switch to timed objective practice and revision of your own notes. The skill you are drilling is deciding when not to answer, given the one-third penalty. Finish GS Paper II practice here too — comprehension, reasoning and Class X numeracy and data interpretation.
9. After selection: fees, posting and training
The fee structure for CSE 2026 was explicit. All candidates, except female, SC, ST and PwBD candidates who are exempted, paid Rs 100 for the Preliminary Examination. Candidates admitted to the Mains were required to pay a further Rs 200, again excepting the exempted categories, through a ten-day window after the Prelims result. Fee once paid is not refunded. These amounts are fixed in each notification — check yours.
Selected candidates are allotted to services on the basis of rank and the preferences they expressed. Probationers of the All India Services and the Central Group ‘A’ services recruited through the CSE undergo a common Foundation Course at the Lal Bahadur Shastri National Academy of Administration, Mussoorie, after which IAS officer trainees move to Professional Course Phase I at the same academy. We are not quoting a course length, because the academy fixes the schedule for each batch.
Pay, allowances and the starting pay level are governed by Central Government pay rules that change with pay commission recommendations and periodic orders, so we are not printing a starting salary figure. Treat any rupee figure on a coaching site as unverified unless it is sourced to a government order.
Frequently asked questions
Do Prelims marks count in the final UPSC merit list?
No. The notification states that the Preliminary Examination is meant to serve as a screening test only, and that the marks obtained by candidates declared qualified for the Main Examination will not be counted for determining their final order of merit. Final ranking is decided by Mains Papers I to VII, which carry 1,750 marks, plus the Interview/Personality Test, which carries 275 marks — a grand total of 2,025 marks.
What is the age limit and attempt limit for the UPSC Civil Services Examination?
As per the CSE 2026 notification, a candidate must have attained 21 years and must not have attained 32 years on 1 August 2026, that is, born not earlier than 2 August 1994 and not later than 1 August 2005. The reference date shifts each year, so read it in your own year's notification. Attempts: six for every otherwise eligible candidate, nine for OBC candidates eligible for reservation, unlimited for SC and ST candidates within the age limit, and for PwBD candidates nine if they are GL, EWS or OBC and unlimited if they are SC or ST.
Is General Studies Paper II in Prelims a scoring paper?
No. General Studies Paper II of the Preliminary Examination, often called CSAT, is a qualifying paper with minimum qualifying marks fixed at 33%. The Mains shortlist is drawn on the basis of that 33% threshold in Paper II plus the total qualifying marks in General Studies Paper I as determined by the Commission. Marks above 33% in Paper II add nothing to your position.
What happens if I fail the Mains language papers?
Your other answer books are not taken into account. Papers A and B are of matriculation or equivalent standard and are qualifying, with 25% required in the Indian language paper and 25% in English. The notification states that the Essay, General Studies and Optional Subject papers of only such candidates will be taken cognizance of as attain those minimum qualifying standards. The marks in Papers A and B themselves are not counted for ranking.
Which degree do I need to apply, and can final-year students apply?
A graduate degree in any subject from a university incorporated by an Act of the central or state legislature, an institution established by an Act of Parliament, or a deemed university under Section 3 of the UGC Act, 1956, or an equivalent qualification. No minimum percentage is prescribed. Candidates who have appeared at the qualifying examination but not received the result, and those who intend to appear at it, may apply for the written part, but anyone qualified for the Personality Test must produce valid proof of passing within the time limit prescribed in that year's Rules.
Can I get into the IAS if I am not an Indian citizen?
No. For the Indian Administrative Service, the Indian Foreign Service and the Indian Police Service a candidate must be a citizen of India. For the other services the notification also allows a subject of Nepal, a subject of Bhutan, a Tibetan refugee who came to India before 1 January 1962 intending to settle permanently, and a person of Indian origin who migrated from specified countries intending to settle permanently — with a certificate of eligibility from the Government of India required before an appointment offer.
How is the Indian Forest Service connected to this examination?
IFoS is notified separately but uses the Civil Services (Preliminary) Examination as a common screening test. After Prelims, separate lists are prepared for the CSE Mains and the IFoS Mains. IFoS requires a Bachelor's degree with at least one of Animal Husbandry and Veterinary Science, Botany, Chemistry, Geology, Mathematics, Physics, Statistics or Zoology, or a Bachelor's degree in Agriculture, Forestry or Engineering. Its Mains comprises General English of 300 marks, General Knowledge of 300 marks and two optional subjects with two papers of 200 marks each, followed by an interview.
Which optional subject should I choose, and is there negative marking in Prelims?
There is no officially scoring optional; UPSC does not publish subject-wise scaling. Choose on syllabus overlap with General Studies, your ability to write three-hour essay-type answers in it, availability of material in your chosen medium, and your academic background. The optional carries 500 of the 1,750 counted marks and is locked once the Examination Specific form is submitted. On negative marking: yes, one-third, or 0.33, of the marks assigned to a question is deducted for a wrong answer out of four alternatives, multiple answers are treated as wrong with the same penalty, and a blank answer carries no penalty.
Sources: UPSC — Examination Notice No. 05/2026-CSE, Civil Services Examination, 2026 notification; UPSC — Examination Notice No. 06/2026-IFoSE, Indian Forest Service Examination, 2026 notification; UPSC — Civil Services (Main) Examination, 2026 examination page; UPSC — Press Note, result of the Civil Services (Preliminary) Examination, 2026; UPSC — previous year question papers; UPSC — examination calendar; LBSNAA — Foundation Course; LBSNAA — about the Academy.
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