UPSC released the Provisional Answer Key for Civil Services Prelims 2026 on 27 May 2026. This is the first time UPSC is releasing the answer key so early after the conduct of the examination.

The official website to download the UPSC CSE Prelims Answer Key 2026 is upsc.gov.in and upsconline.nic.in.

The QPRep (Online Question Paper Representation Portal) is UPSC's dedicated online platform for candidates to submit objections against the provisional answer key. It is accessible at upsconline.nic.in/login. Candidates can log in using their UPSC CSE Prelims 2026 roll number, select the question/answer they want to challenge, provide their suggested answer, and upload the supporting documents from authentic sources.

The last date to raise objections against the UPSC CSE Prelims Provisional Answer Key 2026 is 31 May 2026, by 6:00 PM.

Candidates must submit three authentic sources to support each objection raised on the QPRep portal. Acceptable sources include NCERT textbooks, standard UPSC reference books (e.g., Laxmikanth, Ramesh Singh), authoritative government publications, and peer-reviewed academic journals.