What is the latest update on UPSC Prelims 2026 Answer Key?
The UPSC conducted the Prelims exam for IAS and IFS on May 24, 2026, across 2,072 centers in India. Around 67% of the 8.19 lakh registered candidates appeared in the exam. This year, the exam pattern was quite difficult, deeply conceptual, and dominated by statement-based questions.
To bring transparency, UPSC has launched the provisional answer keys along with the Online Question Paper Representation Portal (QPRep). This means you can check the official answers and submit objections if you think any answer is wrong.
What are the important dates for UPSC Prelims 2026?
You must keep track of these important dates so that you do not miss the deadline for raising objections:
| Event Details | Important Dates |
|---|---|
| UPSC IAS/IFS Prelims Exam Date | May 24, 2026 |
| Release of Official Provisional Answer Key | May 27, 2026 (Out Now) |
| Last Date to Submit Objections (QPRep Portal) | May 31, 2026 (Till 6:00 PM) |
| UPSC Prelims Expected Result Date | June 2026 (Expected) |
How to download the official UPSC Prelims Answer Key 2026 PDF?
Downloading the answer key is very easy. Just follow these basic steps to get the official PDF from the commission website:
- First, visit the official website of the Union Public Service Commission at upsc.gov.in.
- On the homepage, go to the "Examinations" tab in the main menu.
- Click on the "Answer Keys" option from the dropdown list.
- Look for the link titled "Civil Services (Preliminary) Examination, 2026".
- Click on the separate links for General Studies Paper-I and General Studies Paper-II (CSAT) to download the PDFs.
- Save the PDF files on your mobile or computer to match with your response sheet.
How to calculate your marks with negative marking?
To know your actual position, you need to understand the marking scheme properly. Remember that GS Paper 1 marks are used to make the cut-off list, while CSAT Paper 2 is only qualifying in nature (you need 33% marks, which is 66 marks out of 200).
GS Paper I Marking
Total Questions: 100 (200 Marks)
Correct Answer: +2.0 Marks
Negative Marking: -0.66 Marks for every wrong answer
CSAT Paper II Marking
Total Questions: 80 (200 Marks)
Correct Answer: +2.5 Marks
Negative Marking: -0.83 Marks for every wrong answer
Formula to check score: Total Marks = (Number of Correct Answers × Marks per Question) - (Number of Incorrect Answers × Negative Mark)
How to challenge the UPSC Prelims Provisional Answer Key on QPRep?
If you find that an answer provided by UPSC is definitely wrong, you have the right to challenge it. UPSC has opened the Online Question Paper Representation Portal (QPRep) for this reason. You have to submit your challenge before May 31, 2026, at 6:00 PM.
When you raise an objection, you must upload valid supporting proofs like screenshots or references from standard textbooks (like NCERT or standard government websites). A panel of subject experts will check all objections before releasing the final results and the final answer keys.
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Frequently Asked Questions (FAQs)
Q1: Is the UPSC Prelims 2026 Official Answer Key out?
Yes, UPSC has released the official provisional answer keys for both GS Paper 1 and CSAT Paper 2 on its official website on May 27, 2026.
Q2: What is the last date to raise objections against the provisional key?
You can submit your challenges through the official QPRep portal till May 31, 2026, up to 6:00 PM only.
Q3: Is there negative marking in the UPSC Prelims exam?
Yes, there is a penalty of one-third (1/3rd) marks for every incorrect answer. In GS Paper 1, 0.66 marks are deducted, and in CSAT, 0.83 marks are deducted for every wrong attempt.
Q4: Do we need to qualify CSAT paper to get our GS paper evaluated?
Yes, CSAT is qualifying. You must score a minimum of 33% marks (66 marks out of 200) in CSAT Paper 2, otherwise your GS Paper 1 marks will not be considered for the cutoff ranking.