🏛️ UPSC CSE Prelims 2026 – Provisional Answer Key OUT
🎉 HISTORIC FIRST! GS Paper-I & GS Paper-II (CSAT) | Released: 27 May 2026 | Representation Window: Till 31 May 2026, 6:00 PM
📄 GS Paper-I Answer Key 📄 GS Paper-II (CSAT) Answer KeyIn a historic first, the Union Public Service Commission (UPSC) has released the Provisional Answer Keys for both General Studies Paper-I and General Studies Paper-II (CSAT) of the Civil Services (Preliminary) Examination 2026, immediately after the exam — a major reform announced in the CSE 2026 notification. The PDFs were uploaded on the official UPSC portal on 27 May 2026, just 3 days after the exam was conducted on 24 May 2026. Candidates can now compare their responses, calculate expected scores, and submit representations against any disputed answer until 6:00 PM on 31 May 2026. This is a long-awaited transparency reform for the ~10+ lakh aspirants who appear for the Civil Services Prelims every year.
🎉 Why This Is HISTORIC
For the first time ever, UPSC has released a Provisional Answer Key for the Civil Services (Preliminary) Examination along with a formal representation window. Earlier, the Final Answer Key was published only after the entire CSE selection process (Mains + Interview) was concluded. This unprecedented transparency measure was announced in the CSE 2026 notification and benefits over 10 lakh aspirants who can now objectively check their answers and challenge errors immediately.
📋 Quick Overview
| Particular | Details |
|---|---|
| Recruiting Authority | Union Public Service Commission (UPSC) |
| Examination | Civil Services (Preliminary) Examination, 2026 |
| Notice Type | Provisional Answer Key (PROVISIONAL) |
| Papers Released | GS Paper-I + GS Paper-II (CSAT) |
| Prelims Exam Date | Sunday, 24 May 2026 |
| Answer Key Release Date | 27 May 2026 (First time ever) |
| Representation Window | Up to 6:00 PM, 31 May 2026 |
| GS Paper-I PDF | ProvAnsKey-GS-I-CSP-Exam-2026-270526.pdf |
| GS Paper-II (CSAT) PDF | ProvAnsKey-GS-II-CSP-Exam-2026-270526.pdf |
| Answer Keys Page | upsc.gov.in/examinations/answer-key |
| Official Website | upsc.gov.in |
📜 About the Provisional Answer Key Release
The Union Public Service Commission (UPSC), India's premier recruiting body for All India Services and Central Civil Services, conducted the Civil Services (Preliminary) Examination 2026 on Sunday, 24 May 2026 across India in two sessions: GS Paper-I (09:30 AM to 11:30 AM) and GS Paper-II / CSAT (02:30 PM to 04:30 PM). As per a landmark reform notified in the CSE 2026 detailed notification, UPSC has now released the Provisional Answer Keys for both papers on 27 May 2026 — within 72 hours of the examination — marking the first time in the Commission's history that a Prelims provisional answer key has been published.
This transparency move allows candidates to verify their responses, calculate expected scores, and raise representations against any answer they believe is incorrect. As per the official notification, the representation window is 5 days from the third day of the examination, closing at 6:00 PM on 31 May 2026 (the seventh day post-exam). Representations submitted with proper authentic source references (NCERT, government publications, standard textbooks) will be considered for evaluating the Final Answer Key, which historically is published only after the complete CSE selection cycle (Mains and Personality Test) is over.
📅 Important Dates
| Event | Date / Time |
|---|---|
| CSE 2026 Notification Released | January 2026 |
| CSE Prelims 2026 Exam Held | Sunday, 24 May 2026 |
| GS Paper-I Session | 24 May 2026 – 09:30 AM to 11:30 AM |
| GS Paper-II (CSAT) Session | 24 May 2026 – 02:30 PM to 04:30 PM |
| Provisional Answer Key Released | 27 May 2026 (HISTORIC FIRST) |
| Representation Window Opens | 27 May 2026 |
| Representation Deadline | 31 May 2026 – 6:00 PM IST |
| CSE Prelims 2026 Result (Tentative) | Expected June 2026 |
| CSE Mains 2026 (Tentative) | As per UPSC calendar |
| Final Answer Key Release | After completion of entire CSE 2026 cycle |
📝 UPSC CSE Prelims 2026 Exam Pattern
| Paper | Questions | Marks | Duration | Nature |
|---|---|---|---|---|
| GS Paper-I (General Studies) | 100 | 200 | 2 Hours | Merit-Deciding |
| GS Paper-II (CSAT) | 80 | 200 | 2 Hours | Qualifying (33%) |
Negative Marking: 1/3rd of marks allotted for each incorrect answer (i.e., -2/3 for GS-I per wrong answer, -2.5/3 for CSAT per wrong answer). Unattempted questions: 0 marks. CSAT qualifying cut-off: 33% (66 out of 200).
📥 How to Download the Provisional Answer Key
Method 1: Direct PDF Links
- GS Paper-I Provisional Answer Key – Click to download
- GS Paper-II (CSAT) Provisional Answer Key – Click to download
Method 2: Via UPSC Official Website
- Visit https://upsc.gov.in/.
- Navigate to Examinations → Answer Keys tab (or directly visit upsc.gov.in/examinations/answer-key).
- Look for the entry titled "Civil Services (Preliminary) Examination, 2026 – Provisional Answer Key" dated 27/05/2026.
- Click on "General Studies Paper - I" and "General Studies Paper - II" links to download PDFs.
- Save and print for personal reference.
🎯 How to Use the Provisional Answer Key
- Identify Your Question Booklet Series – A, B, C, or D. The answer key is set-wise; match your set carefully.
- Cross-check Your Responses – Mark every question you attempted as Correct / Incorrect / Not Attempted against the key.
- Calculate Expected Score – Apply UPSC's negative marking formula: (Correct × Marks per Q) − (1/3 × Marks × Wrong).
- GS-I Score = (Correct × 2) − (0.667 × Wrong) out of 200.
- CSAT Score = (Correct × 2.5) − (0.833 × Wrong) out of 200. Need 66+ to qualify.
- Compare with Expected Cut-off – Estimated category-wise cut-offs from coaching institutes (Drishti, ClearIAS, NEXT IAS, Vision IAS, etc.).
- Mark Disputed Questions – If you believe an answer is wrong, note the question number and prepare authentic source-based justification.
- Submit Representations – Before 6:00 PM on 31 May 2026 through UPSC's official channel.
📊 UPSC Prelims Expected Cut-off (Indicative)
Based on historical trends and difficulty analysis by leading coaching institutes for CSE Prelims 2026 GS Paper-I (out of 200 marks):
| Category | Expected Cut-off (Tentative) |
|---|---|
| General (UR) | 88 – 96 |
| EWS | 82 – 90 |
| OBC | 86 – 94 |
| SC | 76 – 84 |
| ST | 76 – 84 |
| PwBD | As per category |
| CSAT (Qualifying) | 66 (33% of 200) |
Note: These are indicative cut-offs aggregated from major UPSC coaching institutes. The official cut-off is declared by UPSC after Prelims result.
✍️ How to Submit Representations Against Provisional Answer Key
- Identify Disputed Questions – Note the exact question number and the set code (A/B/C/D) of your booklet.
- Gather Authentic Sources – Use only authoritative references: NCERT textbooks, IGNOU material, government publications, standard reference books, peer-reviewed journals, official websites of ministries/regulators.
- Prepare Justification – Write a brief, factual explanation with exact citation (book name, chapter, page number, edition, year).
- Submit Online – Use the official UPSC representation portal/format as per the notification (likely linked from the Answer Keys page).
- Adhere to Deadline – Submit before 6:00 PM on 31 May 2026; representations after this will not be considered.
- Keep Copy – Save a copy of your representation along with the acknowledgement (if any) for personal record.
⚠️ Important Guidelines
- Provisional in Nature – The current answer key is provisional; UPSC may revise answers after considering valid representations.
- Final Answer Key – Will be released only after the entire CSE 2026 process (Mains + Personality Test) is over, as per UPSC's long-standing practice.
- One-Time Deadline – The representation window closes strictly at 6:00 PM on 31 May 2026. No extensions.
- Authentic Sources Only – Vague references, coaching notes, or unverified online sources will not be entertained.
- No Direct Score Impact – Score calculation done by candidates using this key is only an estimate; actual scores depend on the Final Answer Key.
- Set Code Importance – Each question booklet (A/B/C/D) has the questions in different order. Match the correct set carefully.
- Confidential Process – Representations are evaluated by UPSC's expert committee; no individual reply will be sent to candidates.
- Beware of Fake Keys – Several coaching institutes publish "expected answer keys" — always rely on the official UPSC PDF for representation purposes.
🔄 What's Next in CSE 2026 Selection Process
- Representation Window Closes – 31 May 2026, 6:00 PM.
- Expert Review – UPSC's expert committee evaluates all valid representations.
- CSE Prelims 2026 Result – Result of qualified candidates declared (expected June 2026).
- CSE Mains 2026 Application – Successful Prelims candidates apply for DAF-I (Detailed Application Form-I).
- CSE Mains 2026 Exam – Written examination as per UPSC calendar.
- Mains Result & DAF-II – Successful Mains candidates submit DAF-II for Personality Test.
- Personality Test (Interview) – Held at UPSC Bhavan, Dholpur House, New Delhi.
- Final Result – Combined merit list released.
- Service Allocation – IAS / IPS / IFS / IRS / Other Group A & B services based on rank and preference.
- Final Answer Key – Released by UPSC after completion of entire selection cycle.
🔧 Troubleshooting Common Issues
| Issue | Solution |
|---|---|
| PDF not opening | Use updated Adobe Reader/Chrome PDF viewer. Try downloading instead of opening directly. |
| Cannot find answer key on UPSC site | Visit upsc.gov.in → Examinations → Answer Keys. Use direct PDF links provided above. |
| Set code (A/B/C/D) mismatch | Check the top of your question booklet and admit card. Match the corresponding set in the official key. |
| Answer differs from coaching key | Trust the UPSC official key only. Coaching keys are unofficial estimates. |
| UPSC site slow/server down | Try off-peak hours (early morning/late night). Clear cache and use Chrome/Firefox latest. |
| Negative marking calculation | Use formula: Score = (Correct × Marks) − (1/3 × Marks × Wrong). For GS-I: 2 marks/Q; CSAT: 2.5 marks/Q. |
| Representation portal not accessible | Check UPSC website for the official representation link/format issued separately. |
🔗 Important Links
| Resource | Link |
|---|---|
| GS Paper-I Provisional Answer Key (PDF) | Download PDF |
| GS Paper-II (CSAT) Provisional Answer Key (PDF) | Download PDF |
| UPSC Official Website | upsc.gov.in |
| UPSC Answer Keys Page | upsc.gov.in/examinations/answer-key |
| UPSC Examinations Notifications | Active Examinations |
| UPSC Headquarters | Dholpur House, Shahjahan Road, New Delhi – 110069 |
| Sarkari Nokrii Home | sarkarinokrii.com |
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❓ Frequently Asked Questions (FAQs)
Q1. When was the UPSC CSE Prelims 2026 Provisional Answer Key released?
UPSC released the Provisional Answer Keys for both GS Paper-I and GS Paper-II (CSAT) on 27 May 2026 — the first time ever for UPSC Prelims.
Q2. When was the UPSC CSE Prelims 2026 exam held?
The Prelims exam was conducted on Sunday, 24 May 2026 across India in two sessions: GS Paper-I (09:30 AM – 11:30 AM) and CSAT (02:30 PM – 04:30 PM).
Q3. What is the last date to submit representations?
31 May 2026, 6:00 PM IST. After this, no representation will be accepted.
Q4. Is this really the first time UPSC has released a provisional answer key for Prelims?
Yes. As per UPSC's CSE 2026 notification, this is a landmark reform and the first instance in the Commission's history of releasing a Prelims provisional answer key before the result.
Q5. How do I calculate my expected score?
Use formula: Score = (Correct × 2) – (Wrong × 0.667) for GS-I, and Score = (Correct × 2.5) – (Wrong × 0.833) for CSAT. Unattempted questions get 0 marks.
Q6. What is the CSAT qualifying cut-off?
33% – i.e., 66 marks out of 200. GS-II (CSAT) is qualifying in nature; only GS-I (200 marks) is merit-deciding.
Q7. What sources should I cite while submitting representations?
Only authentic sources — NCERT, IGNOU, government publications, peer-reviewed journals, standard reference books, official ministry/regulator websites. Coaching notes or random websites won't be accepted.
Q8. When will UPSC release the Final Answer Key?
The Final Answer Key is released by UPSC only after the entire CSE 2026 selection cycle (Mains + Interview) is over, as per long-standing UPSC practice.
Q9. Will UPSC respond to my individual representation?
No. UPSC evaluates all valid representations through an expert committee, but no individual reply is sent to candidates.
Q10. What if I lose marks due to a disputed answer that gets corrected later?
If UPSC accepts a representation and modifies an answer, the change applies uniformly to all candidates as per the revised final key, ensuring fair evaluation across the board.
📌 Conclusion
The UPSC CSE Prelims 2026 Provisional Answer Key release on 27 May 2026 is a landmark transparency reform — the first time in history that UPSC has released a Prelims answer key with a formal representation window. With over 10+ lakh aspirants appearing for Civil Services Prelims every year, this move empowers candidates to objectively verify answers, calculate scores, and challenge errors immediately rather than waiting for the entire selection cycle to conclude. Download both GS Paper-I and GS Paper-II (CSAT) PDFs immediately, cross-check your responses against your booklet's set code, calculate your expected score using the negative-marking formula, and submit any well-substantiated representations before 6:00 PM on 31 May 2026. For ongoing updates on the Prelims result, Mains schedule, and other Sarkari Naukri alerts, bookmark Sarkari Nokrii and follow our social channels.
Disclaimer: This article is compiled from the official UPSC Provisional Answer Key PDFs (GS Paper-I and GS Paper-II / CSAT) dated 27 May 2026 for Civil Services (Preliminary) Examination 2026. The expected cut-offs mentioned are indicative figures aggregated from leading UPSC coaching institutes and may differ from the official UPSC cut-off. Candidates are strongly advised to verify all details from the UPSC official website before submitting representations. Sarkari Nokrii is not affiliated with UPSC or any Government Department. © Sarkari Nokrii — All rights reserved.