What UPSC CSE is
The Civil Services Examination, conducted by the Union Public Service Commission, is the single recruitment process behind the Indian Administrative Service, the Indian Police Service, the Indian Foreign Service and dozens of other central Group A and Group B services. There is no separate exam for IAS, IPS or IFS specifically: one combined process produces a single merit list, and your rank on that list, together with the service preferences you submit, decides which service you are allotted.
This is what makes UPSC CSE the most consequential government exam in the country by outcome: a single rank can place you at the top of the country’s administrative apparatus.
Who can apply
A bachelor’s degree in any discipline from a recognised university is the only academic requirement, with no restriction on the subject studied. The general age band is 21 to 32 years as on the 1st of August of the examination year, with standard relaxations for reserved categories and persons with disability.
Attempts are limited: general category candidates get six attempts, with a larger number of attempts and a higher upper age limit for OBC and unlimited attempts up to the age limit for SC and ST candidates. The exact current attempt and age limits should always be confirmed against the notification, since they have changed in the past.
How the exam runs
The exam runs in three stages across roughly a year. The Preliminary Examination is an objective test of two papers: General Studies Paper 1, which produces the actual ranking for advancing to the Main Examination, and General Studies Paper 2 (the CSAT), which is only qualifying and does not count towards Preliminary ranking beyond a pass mark.
The Main Examination is a descriptive written exam of nine papers across several days: an Essay paper, four General Studies papers, two papers in an optional subject the candidate chooses, and two qualifying language papers that do not count towards the merit but must be passed.
Candidates who clear the Main Examination sit a Personality Test, commonly called the interview, conducted by a UPSC board. The final civil services rank combines Main Examination marks and Personality Test marks.
Preparing the application
UPSC’s photograph and signature specifications are set out precisely in each year’s notification rather than following a fixed year to year standard, so always check the current notification’s exact dimension and file size requirements before uploading. The tools on this site can resize your photograph to whatever specific target the notification states.
On exam day
Arrive at least an hour before the reporting time on your admit card, with the printed e-admit card, a government photo identification that matches the name and photograph on the admit card, one recent passport size photograph, and a black ballpoint pen for the Preliminary Examination’s OMR sheet. No electronic devices are permitted, and only material issued by UPSC at the centre may be used during the exam.
A note on preparation
Most successful candidates prepare across more than one attempt, since the exam rewards sustained, broad preparation over a single intensive push, and the syllabus genuinely spans a wide range of subjects rather than a fixed, narrow curriculum. The official UPSC notification and website, linked above, are the authoritative source for the current syllabus, exam calendar and any year specific change to the pattern described here.