Vacancies and services
The number of vacancies and the participating services. CSE 2026 notified 933 vacancies, including 33 reserved for PwBD candidates; 2027 figures come only with the notification.
Official calendar dates
The UPSC CSE 2027 notification is scheduled for 13 January 2027, with applications open until 2 February 2027 and the Prelims exam on 23 May 2027 — per the official UPSC Annual Calendar released 20 May 2026. Vacancies and cycle-specific eligibility arrive only with the notification itself.
Source: official UPSC Annual Calendar 2027, released 20 May 2026. The calendar notes that dates are liable to alteration.
| Event | Date | Note |
|---|---|---|
| Notification and application start | 13 January 2027 | The Civil Services (Preliminary) Examination 2027 notification releases and applications open. |
| Last date to apply | 2 February 2027 | The application window in recent cycles has run about three weeks from the notification. |
| Prelims exam | 23 May 2027 (Sunday) | Both papers — GS Paper I and CSAT Paper II — are held on the same day. |
| Mains exam begins | 20 August 2027 | The Mains examination begins on this date and runs 5 days. |
The examination notice is the single authoritative document for the cycle. Based on the structure of Examination Notice No. 05/2026-CSE, expect:
The number of vacancies and the participating services. CSE 2026 notified 933 vacancies, including 33 reserved for PwBD candidates; 2027 figures come only with the notification.
The age reference date (1 August 2027, if the standard rule repeats), category-wise age relaxations, attempt limits, and the degree requirement.
The two-paper Prelims structure, the one-third negative marking, the CSAT 33% qualifying rule, and the full Prelims and Mains syllabus.
How to apply on the UPSC online portal, the fee and exemptions, photo/ID requirements, and the list of exam centres with their capacity rules.
Application mechanics below follow the CSE 2026 notification; the 13 January 2027 notice will confirm them for the new cycle.
The 2026 process uses upsconline.nic.in: create an account, obtain a Universal Registration Number (URN), and complete the Common Application Form (CAF). These modules can be prepared before the examination-specific application opens. Check the 2027 notice for any changes.
The calendar schedules applications from 13 January 2027. Follow the 2027 notification when it is published. In 2026, applicants completed an examination-specific module with their fee and centre choices after the URN and CAF modules.
The Prelims application fee was ₹100 in the CSE 2026 notification, with women, SC/ST, and PwBD candidates exempt. Expect the 2027 notification to confirm the figure.
Review every field before submitting. Section 2.1 of the 2026 notice did not allow withdrawal or corrections after submission. A URN profile update did not change applications already submitted. Do not assume a correction window for 2027; follow that year's notification.
The notification arrives just over four months before the Prelims exam. The syllabus, the two-paper pattern, and the one-third negative marking have been stable for years — everything you need to prepare is already known.
Use the month-by-month 2027 timeline to plan backwards from 23 May 2027, and confirm you clear the eligibility rules before the window opens.
Every date and figure on this page is cited to these UPSC documents:
The official source for the 13.01.2027 notification date, 02.02.2027 application deadline, 23.05.2027 Prelims, and 20.08.2027 Mains start. The calendar notes dates are liable to alteration.
2026 reference only. Pages 1–2 describe URN, CAF and upsconline.nic.in. Section 2.1 prohibits corrections after submission. The 2027 notice will confirm its own application rules.
The month-by-month preparation timeline from now to the 23 May 2027 exam.
Open resource →Check age, attempts, nationality, and degree rules before the window opens.
Open resource →Category-wise age limits and the date-of-birth window the 2027 notification will set.
Open resource →The GS Paper I and CSAT syllabus mapped to subject-wise practice.
Open resource →The candidates who clear 2027 will already be practising today. Start with timed mocks, PYQs, and daily current affairs.