BharatNotes You rank all ~22 services notified in CSE 2026 in order of personal preference, in DAF-I and again (with revision) in DAF-II. Rank determines what you actually get — but only services you list are considered. Never leave services blank thinking they don't matter.
The services explained — what you are ranking
The CSE recruits to three buckets:
All India Services (AIS) — recruited centrally, serve in states
- IAS — Indian Administrative Service
- IPS — Indian Police Service
- IFoS — Indian Forest Service (recruited through IFoS exam after sharing Prelims with CSE; not in CSE service list)
Group A Central Services — serve under central government
- IFS (Indian Foreign Service)
- IAAS (Indian Audit & Accounts Service)
- IRS-IT (Indian Revenue Service — Income Tax)
- IRS-C&IT (Indian Revenue Service — Customs & Indirect Taxes)
- ICAS (Indian Civil Accounts Service)
- ICLS (Indian Corporate Law Service)
- IDAS (Indian Defence Accounts Service)
- IDES (Indian Defence Estates Service)
- IIS (Indian Information Service)
- IOFS (Indian Ordnance Factories Service)
- IPoS (Indian Postal Service)
- ITS (Indian Trade Service)
- IP&TAFS (Indian P&T Accounts & Finance Service)
- IRMS (Indian Railway Management Service — non-technical cadres, post-merger; IRSEE/IRSME/IRSE/IRSSE moved to ESE from 2026)
Group B Central Services
- AFHCS (Armed Forces HQ Civil Service)
- DANICS (Delhi-Andaman-Nicobar Islands Civil Service)
- DANIPS (Delhi-Andaman-Nicobar Islands Police Service)
- Pondicherry Civil Service
- Pondicherry Police Service
The exact services notified vary slightly each year — for CSE 2026, the official notification lists 22 services. Check the 4 February 2026 notification PDF.
Recent change — IRMS Engineering cadres moved out
A key 2026 development: the four IRMS Engineering cadres (IRSEE, IRSME, IRSE, IRSSE) have been moved to the UPSC Engineering Services Examination (ESE) from CSE 2026 onwards. Only the non-technical IRMS cadres (Traffic, Personnel, Accounts) remain in CSE. Check your notification carefully if you're targeting Railways.
How allocation actually works
- UPSC publishes final rank list with categories
- Services are filled in rank order, but only from each candidate's preference list
- If you didn't rank IRTS but it's your turn, IRTS goes to the next candidate who did rank it
- Categories matter — vacancies are roster-based (SC/ST/OBC/EWS/General + PwBD sub-roster)
Typical rank-to-service correlation (CSE 2023 trends)
| Last rank getting | General | OBC | SC | ST |
|---|---|---|---|---|
| IAS | ~90 | ~250 | ~180 | ~120 |
| IFS | ~50 | ~110 | ~80 | ~60 |
| IPS | ~190 | ~390 | ~280 | ~190 |
| IRS (IT) | ~390 | ~600 | ~470 | ~330 |
| IRS (C&IT) | ~470 | ~700 | ~530 | ~370 |
| Other Group A | ~550–900 | varies | varies | varies |
Figures approximate from published CSE 2023 final allocation lists; exact cutoffs shift annually.
How to think about your preference list
There is no "right" order — only the order that's right for you. Frame it around three questions:
| Question | If yes, push up | If no, push down |
|---|---|---|
| Do you want district-level field administration? | IAS, IPS | IFS, IAAS |
| Do you want international postings? | IFS, ITS | IAS, IPS, IRTS |
| Do you prefer technical / specialist work? | IAAS, IRS, IDAS, ICAS, ICLS | IAS |
| Do you prefer a fixed city / less transferable life? | IRS, ICAS, IAAS, Railways | IAS, IPS |
| Family / health constraints requiring stability? | Central services | AIS |
Worked scenario — a married 30-year-old with parents needing care
Meera, 30, married, has aging parents in Jaipur. Her husband works in Delhi. She cleared CSE 2026 with rank 420 (General):
- IAS is likely out at rank 420 General; IFS too
- IPS probably out; IRS(IT) and IRS(C&IT) are realistic
- She ranks: IRS(IT) → IAAS → ICAS → IRS(C&IT) → IDAS → IRPS → ... (all 22)
- She does not rank IPS at #1 even though it's higher in popular hierarchy, because she'd rather get a fixed-city IRS(IT) than risk IPS in a remote cadre
Result: she gets IRS(IT), posted at Delhi NACIN academy — close to husband and parents.
The fatal mistake — leaving services blank
Many candidates rank only their "top 5" thinking the rest doesn't matter. It does. A candidate at rank 700 who didn't rank IRPS or IDAS may get nothing, even though those services had vacancies at that rank. Always rank ALL services UPSC lists — put the ones you'd actively dislike at the bottom, but list them.
Topper insight — Aditya Srivastava (AIR 1, CSE 2023)
Aditya, who chose IAS, says in his PWOnlyIAS interview that he spent 40 hours over 3 weekends researching every service before filling DAF-I — reading officer interviews on YouTube, talking to seniors at LBSNAA, reading Mussoorie Foundation Course experience blogs. "A career is 35 years. Take 35 hours to research."
Mentor's advice — research before ranking
Read Karmayogi profiles, watch interviews of officers on YouTube, read Mussoorie Foundation Course experiences. Don't choose IRS over IRTS just because your coaching teacher said so. Service preference is one of the few UPSC decisions you make in writing that locks 35 years of life. Treat it accordingly.
