Why the cutoff matters
The Prelims is purely a screening stage — marks do not carry forward. The only thing that matters is clearing the cutoff. Knowing how it is determined lets you aim for a safe score with the right mix of accuracy and attempts.
How the cutoff is decided
- Only GS Paper I counts toward the cutoff; CSAT is merely qualifying (33%).
- UPSC sets the cutoff based on the number of vacancies (roughly 12-13× vacancies are shortlisted for Mains) and the difficulty of the paper.
- Separate cutoffs are declared category-wise (General, EWS, OBC, SC, ST, PwBD).
- The official cutoff is released by UPSC after the entire process concludes.
Why cutoffs fluctuate
Cutoffs move with paper difficulty (a hard paper like 2018 pushes the cutoff down), the number of vacancies (more vacancies can lower it), and the impact of CSAT (a tough CSAT year disqualifies many, indirectly affecting the GS pool). Because of these variables, a fixed “safe score” is a myth — but a well-judged target band is not.
How to target a safe score
Aim to comfortably clear the likely band rather than scrape it: maximise accuracy (negative marking is costly), make calculated attempts where you can eliminate options, and never neglect CSAT — every year aspirants with strong GS fail because CSAT fell below 33%. Practise full mocks to calibrate your attempt strategy.
UPSC angle
Don’t memorise a number — understand the drivers (difficulty, vacancies, CSAT). Target a comfortable clearance through accuracy and calculated attempts, and protect your CSAT qualification.
Frequently asked questions
How is the UPSC Prelims cutoff decided?
It is based on GS Paper I marks only, set according to the number of vacancies (about 12-13× shortlisted for Mains) and the paper’s difficulty. CSAT is only qualifying at 33%.
Does CSAT count towards the cutoff?
No — CSAT (Paper II) is qualifying at 33%. Only GS Paper I counts for the Prelims cutoff, but failing CSAT disqualifies you regardless of GS marks.
Why do Prelims cutoffs change every year?
Because of variation in paper difficulty, the number of vacancies, and the impact of CSAT difficulty on the qualifying pool.
What is a safe Prelims score?
There is no fixed safe score; aim to comfortably clear the likely category band through high accuracy and calculated attempts, while ensuring you clear CSAT.