What is the UPSC exam? The UPSC exam, formally the Civil Services Examination (CSE), is conducted by the Union Public Service Commission to recruit officers for India’s top central government services — IAS, IPS and IFS among 24 services. It runs in three stages: Preliminary, Mains and Personality Test. Eligible candidates must be Indian citizens aged 21-32 with a recognised bachelor’s degree.
The Union Public Service Commission is a constitutional body established under Article 315 of the Indian Constitution. Its headquarters sits at Dholpur House, Shahjahan Road, New Delhi. UPSC is fully independent of any ministry, which is what gives its selections credibility across party lines and government cycles.
When people ask what is UPSC exam, they usually mean the Civil Services Examination. But UPSC actually conducts 14+ different examinations annually. These include the Combined Defence Services (CDS) exam run in coordination with the Ministry of Defence, the National Defence Academy (NDA) exam, the Central Armed Police Forces (CAPF) exam, the Indian Engineering Services (IES) exam, and the Indian Forest Service exam, among others.
It is worth separating UPSC from other central recruiting bodies. SSC (Staff Selection Commission) recruits for Group B and C posts. IBPS and RRB handle banking and railway recruitment. NTA conducts entrance exams for higher education admissions, while UGC oversees university grants and NET for academic roles. UPSC sits at the top of this pyramid, handling only the most senior and specialised civil and defence positions.
According to the UPSC Annual Report 2022-23 (Chapter 2: Examination Activities), the Commission received over 10 lakh applications for the Civil Services Examination alone that year. Roughly 5 lakh candidates actually appeared for Prelims. Final vacancies notified were around 1,105. That ratio tells you everything about the competition level.
The UPSC CSE is not a single test. It is a year-long selection process split into three distinct stages, each designed to filter candidates differently.
Prelims consists of two objective-type papers: General Studies Paper I (100 questions, 200 marks) and CSAT or General Studies Paper II (80 questions, 200 marks). CSAT is qualifying in nature; you need 33% to pass it, but your GS Paper I score determines whether you clear the cut-off. There is a negative marking of one-third for each wrong answer, so guessing randomly is a bad strategy.
Prelims typically happens in May or June. Cut-offs vary every year based on difficulty and the number of vacancies. For the 2023 cycle, the general category cut-off for GS Paper I was 92.51 out of 200, as published in the UPSC CSE 2023 Preliminary Examination Result Notification on the official UPSC website (upsc.gov.in).
Mains is a written examination with nine papers. Two are qualifying: one Indian language paper and English. The remaining seven are merit-based: Essay (250 marks), four General Studies papers (250 marks each), and two Optional subject papers (250 marks each). Total marks for merit calculation: 1,750.
Choosing your optional subject wisely is one of the most debated decisions in UPSC exam preparation. Popular choices include Public Administration, Sociology, Geography, History and Political Science. Candidates with a science or engineering background often pick Mathematics or Physics, though toppers come from every optional.
The Interview carries 275 marks and is conducted by a UPSC board. It is not a knowledge test in the way Prelims or Mains are. The board assesses your mental alertness, critical thinking, social traits and integrity. Your Mains score plus Interview score determines your final rank and, consequently, which service you are allocated to.
| Service | Full Form | Ministry / Cadre | Starting Pay (7th CPC, Level 10) | Pay Level at Senior Scale |
|---|---|---|---|---|
| IAS | Indian Administrative Service | State Cadre / DoPT | Rs. 56,100/month | Level 13 (Rs. 1,18,500+) |
| IPS | Indian Police Service | State Cadre / MHA | Rs. 56,100/month | Level 13 (Rs. 1,18,500+) |
| IFS | Indian Foreign Service | Ministry of External Affairs | Rs. 56,100/month | Level 14 (Rs. 1,44,200+) |
| IRS (IT) | Indian Revenue Service (Income Tax) | Ministry of Finance | Rs. 56,100/month | Level 12 (Rs. 78,800+) |
| IRAS | Indian Railway Accounts Service | Ministry of Railways | Rs. 56,100/month | Level 12 (Rs. 78,800+) |
| IPoS | Indian Postal Service | Ministry of Communications | Rs. 56,100/month | Level 12 (Rs. 78,800+) |
IAS and IPS are the most sought-after because they offer state cadre postings, broader administrative powers and the highest public visibility. IFS is unique because postings are overseas, making it a different lifestyle choice entirely.
The PCS exam (Provincial Civil Services) is conducted by individual State Public Service Commissions, not by UPSC. Each state has its own commission: UPPSC in Uttar Pradesh, MPSC in Maharashtra, BPSC in Bihar, RPSC in Rajasthan, TNPSC in Tamil Nadu, and so on.
PCS exams recruit for state-level Group A and Group B administrative posts: SDM, DSP, BDO, Tehsildar, and similar roles. These officers work within the boundaries of their state and report to state government departments, not the central government.
| Factor | UPSC CSE | State PCS |
|---|---|---|
| Conducting Body | Union Public Service Commission | State Public Service Commission (e.g., UPPSC, BPSC) |
| Cadre | All-India Services (IAS, IPS, IFS) or Central Services | State cadre only |
| Posting Area | Any state (for All-India Services) or central offices | Within the state |
| Syllabus | National GS; optional from a central list | State-specific GS with regional history, geography and polity |
| Age Limit (General) | 21-32 years | 21-40 years (varies by state) |
| Number of Attempts | 6 for General; more for OBC/SC/ST | Varies; often more liberal |
| Vacancies (approx.) | Around 900-1,100 per year | Hundreds to thousands, state-specific |
Many serious aspirants prepare for both simultaneously, since the GS overlap is substantial. But PCS syllabi include state-specific topics that UPSC does not test, so you cannot treat them as identical preparation paths.
In Hindi, UPSC is referred to as संघ लोक सेवा आयोग (Sangh Lok Seva Aayog). The Civil Services Examination is called सिविल सेवा परीक्षा. All UPSC exams can be attempted in Hindi or English, and Mains answers can be written in any of the 22 scheduled languages listed in the Eighth Schedule of the Constitution. This makes the UPSC exam one of the most linguistically inclusive national examinations in the country.
Eligibility basics: Indian citizenship (mandatory for IAS, IPS, IFS; other nationalities can apply for some services), a bachelor’s degree from a UGC-recognised university, and an age between 21 and 32 for general category. OBC candidates get a 3-year relaxation; SC/ST candidates get a 5-year relaxation. Persons with benchmark disabilities get a 10-year relaxation.
You can appear for Prelims even if you are in your final year of graduation, as long as you produce proof of degree before Mains. The number of permitted attempts is 6 for general category, 9 for OBC and unlimited (up to the age limit) for SC/ST candidates.
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UPSC is called संघ लोक सेवा आयोग (Sangh Lok Seva Aayog) in Hindi. The Civil Services Examination is known as सिविल सेवा परीक्षा. Candidates can write Mains answers in Hindi or any of the 22 languages listed in the Eighth Schedule of the Indian Constitution, making it accessible to non-English speakers across the country.
The Union Public Service Commission (UPSC) conducts the exam. It is a constitutional body established under Article 315 of the Indian Constitution, operating independently from any government ministry. It is headquartered at Dholpur House, New Delhi. UPSC conducts 14+ exams annually, including CDS, NDA, CAPF and IES, in addition to the Civil Services Examination.
PCS stands for Provincial Civil Services. It is conducted by individual State Public Service Commissions like UPPSC, BPSC or MPSC, not by UPSC. PCS recruits officers for state-level administrative roles such as SDM, DSP and Tehsildar. The syllabus includes state-specific topics, the cadre is limited to that state, and age limits are generally more relaxed than UPSC CSE.
Indian citizens holding a bachelor’s degree from a UGC-recognised university can apply. The age limit is 21 to 32 years for general category, with a 3-year relaxation for OBC and 5-year relaxation for SC/ST candidates. General category candidates get 6 attempts. Final-year students can appear for Prelims provisionally, submitting degree proof before Mains.
General category candidates are allowed 6 attempts between ages 21 and 32. OBC candidates get 9 attempts up to age 35. SC/ST candidates have unlimited attempts up to age 37. Persons with benchmark disabilities get 9 attempts (general/OBC) or unlimited attempts (SC/ST) within their respective age limits.
UPSC CSE recruits for 24 services, grouped into All-India Services (IAS, IPS, IFS), Group A Central Services (IRS, IRAS, IPoS, IFS-Forests, etc.) and Group B Central Services. Each service differs in cadre allocation, job profile and posting location. Your final service depends on your rank in the merit list and your stated preferences during the allocation process.
Last updated: June 2025. Reviewed by the 3University editorial team.
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