The UPSC CSAT Answer Key 2025 is an important tool for candidates who appeared in the UPSC Civil Services Preliminary Exam. Paper II of the prelims, called the Civil Services Aptitude Test (CSAT), is only qualifying, but it is still necessary to pass in order to move to the next stage—the Mains exam.

The official CSAT answer key will be released by UPSC only after the full exam process is over, which includes the Mains exam, the Interview, and the final result. However, some popular coaching institutes usually release unofficial UPSC CSAT Answer Key 2025  within 48 hours of the exam. These early answer keys help students check their answers, understand their performance, and get an idea of whether they might qualify for the next stage.

UPSC CSAT Answer Key 2025 – Overview

The UPSC CSAT Answer Key 2025 is an essential tool for candidates who appeared in the UPSC Civil Services Preliminary Examination held on 25th May 2025. It pertains to Paper II, the Civil Services Aptitude Test (CSAT), which is a qualifying paper requiring a minimum score of 33% (66 marks out of 200) to advance to the Mains stage.

While the official CSAT answer key will be released by the Union Public Service Commission (UPSC) only after the completion of the full exam cycle, unofficial answer keys from trusted coaching institutes are expected to be available between 25th and 26th May 2025. These unofficial keys are valuable for early self-assessment, allowing aspirants to estimate their performance and likelihood of qualifying.

UPSC CSAT Answer Key 2025 PDF Link 

The UPSC Civil Services Preliminary Examination 2025 – Paper II (CSAT) was successfully conducted on 25th May 2025, from 2:30 PM to 4:30 PM. This paper, officially known as the Civil Services Aptitude Test (CSAT), is qualifying in nature and is essential for advancing to the Mains stage.

The official UPSC CSAT Answer Key 2025 will be released by the Union Public Service Commission (UPSC) only after the declaration of the final result, which includes the completion of the Mains and Interview phases. 

UPSC CSAT Answer Key PDF – Year-wise (2020 to 2025)

Reviewing previous years’ question papers and answer keys is an essential part of effective UPSC preparation. The UPSC CSAT (Paper II) Answer Key helps candidates understand the nature of questions, evaluate difficulty levels, and refine their test-taking strategies. While the official UPSC CSAT Answer Key 2025 will be released only after the completion of the full examination cycle—including the Mains and Interview stages—aspirants can rely on previous years’ papers and keys to strengthen their preparation. Below is a year-wise compilation of UPSC CSAT Question Papers and Answer Key PDFs from 2020 to 2025, which will be updated as new keys become available.

How to Download UPSC CSAT Answer Key 2025?

The official UPSC CSAT Answer Key 2025 will be released by the Union Public Service Commission only after the final results of the Civil Services Examination 2025 are announced. This means it will be available after the completion of the Mains and Interview stages. Once released, candidates can follow the steps below to download the answer key from the official website.

• Visit the Official UPSC Website
  Go to the official website of the Union Public Service Commission:
  👉 https://www.upsc.gov.in

• Navigate to the “Examinations” Tab
  On the homepage, locate the top menu bar and click on the “Examinations” section. A dropdown or new page will appear.

• Click on “Answer Keys”
  In the “Examinations” section, scroll down and click on “Answer Keys”. This will take you to a list of exams for which answer keys are available.

• Find the Link for Civil Services Preliminary Examination 2025
  Look for the heading titled “Civil Services (Preliminary) Examination 2025” in the list.

• Select CSAT Paper II (GS Paper 2)
  Under this heading, locate the CSAT Paper II (General Studies Paper 2) answer key. It may be listed as separate PDFs for Set A, B, C, or D, depending on the question paper version.

• Download the PDF
  Click on the appropriate link for your set to download the UPSC CSAT Answer Key 2025 PDF. Save the document for reference.

Conclusion

The UPSC CSAT Answer Key 2025 is more than just a way to check answers—it’s a critical tool for analysis, reflection, and future strategy. Whether you’re assessing your chances of clearing the prelims or planning ahead for future attempts, using both unofficial answer keys immediately after the exam and the official key later on can offer valuable insights. Additionally, revisiting CSAT previous year answer keys can help you recognize recurring patterns, question framing styles, and areas requiring more focus.

UPSC CSAT Answer Key 2025 FAQs