BharatNotes Service first, cadre second. DoPT first decides whether you become IAS, IPS, IFoS, or one of the other 20+ Group A services based on your final rank, category, and service-preference. Only after a service is fixed are AIS recruits placed in a cadre using the 2026 four-group framework. The two processes share one DAF-II form but run sequentially.
The strict order
Service Allotment (Round 1): Using your final merit rank + service preference list + UPSC's vacancy table for that year, DoPT/UPSC fixes your service. Top-ranked candidates picking IAS get IAS; IFS cut-off is typically lower (fewer seats but high preference), IPS lower still on numbers though geographically wider. The 22 other Group A services follow.
Cadre Allotment (Round 2): Only after service allotment is finalised do AIS recruits (IAS/IPS/IFoS) enter the cadre allocation process using the 2026 four-group framework. State Services and Group A non-AIS officers do not have cadres in the same sense — they go to their service-specific zones (IRS, for example, has zones within India for tax administration, but it's a different concept).
What determines service allotment
- Rank (the dominant factor).
- Service preference order filled in DAF-II.
- Category (vacancies are split by General/EWS/OBC/SC/ST/PwBD).
- Vacancies for that year (UPSC publishes year-wise service vacancies in the notification).
Recent cut-off patterns (illustrative, CSE 2022–2024)
| Service | UR cut-off (approx.) | Total vacancies (recent average) |
|---|---|---|
| IAS | ~90 | 180 |
| IFS (Foreign) | ~110 | 38 |
| IPS | ~170 | 200 |
| IRS (IT) | ~280–400 | 175 |
| IRS (Customs) | ~400–500 | 130 |
| IAAS | ~250–400 | 50 |
| IFoS (separate exam) | varies | 100 |
These shift each year based on vacancy patterns and overall scoring.
Why this order matters
If you don't get IAS/IPS/IFoS, your cadre-group preferences are irrelevant — IRS, IAAS, IRTS, etc. have their own training and posting systems, not state cadres. Your 25 cadre preferences only activate if you make the IAS/IPS/IFoS cut.
What you fill in DAF-II
A single form, two sections:
- Service preference: All 24+ services in your chosen order.
- Cadre preference: 25 cadres ranked in a single ordered list (post-2026 OM).
Fill both even if your rank looks far from IAS — because at the margin a cancelled candidacy above you can pull you up by 5–10 ranks, and you don't want a service-only allotment with a defaulted cadre list.
The 2025 timeline shift
From CSE 2025 onwards, cadre preferences must be submitted within a tight window of Prelims results — well before Mains. This is a major change: aspirants no longer have the luxury of post-Mains thought to fine-tune cadre choices. Service preferences continue to be filled in DAF-II after Mains. So:
- Cadre preference window: post-Prelims, ~10 days.
- Service preference window: post-Mains, in DAF-II.
Under the 2026 OM, both are submitted electronically through the DoPT CSE Plus portal.
Worked scenario: ranks and outcomes
Candidate AIR 95, UR:
- Service preference: IAS, IFS, IPS, IRS-IT, IAAS, ...
- Result: clears IAS cut-off → IAS.
- Now cadre allocation runs. Home cadre: Karnataka. Top cadre preferences: Karnataka, Gujarat, MP, Maharashtra, TN.
- Karnataka insider cut-off likely cleared at AIR 95 → Karnataka cadre as insider.
Candidate AIR 215, OBC:
- IAS cut-off for OBC typically around 250–280, so this candidate clears IAS → IAS.
- Home cadre: Tamil Nadu. TN insider competition is fierce; AIR 215 may miss insider cut-off.
- Falls into outsider pool, lands somewhere per the 2026 group-rotation roster — say Maharashtra or Gujarat.
Candidate AIR 600, UR:
- Misses IAS cut-off → assigned IRS-IT (clears the cut-off).
- Cadre preferences become moot — IRS has its own zone allocation, no AIS cadre.
Common confusion: 'service' vs 'cadre' nomenclature
Aspirants often conflate these terms. Clear distinction:
- Service = the corps you join: IAS, IPS, IFoS, IRS-IT, IRS-Customs, IAAS, IRTS, IPoS, IDES, IIS, ITS, IOFS, IRPS, IRSE/IRSEE/IRSME/IRSSE (Railway engineering), etc.
- Cadre = the state or joint-state assignment within the All India Services (IAS/IPS/IFoS only). Other Group A services have their own zonal/regional postings but not 'cadres' in the AIS sense.
What happens if you don't get IAS
If your service allotment goes to IRS-IT (say), your cadre preferences become moot. IRS officers are assigned to Income Tax zones — Mumbai, Delhi, Bangalore, Chennai, Kolkata, etc. — based on a separate IRS preference mechanism. Similarly, IPoS officers go to postal circles, IAAS to A&G offices, IRTS to railway zones, etc.
This is why your service preference order in DAF-II is itself a strategic decision. Many aspirants who narrowly miss IAS but get IPS still have rich cadre options under the 2026 four-group system; those who fall to IRS-IT or below face a completely different career-geography logic.
Mentor's note
Don't blur the two processes. Many aspirants tweak only their service preferences and forget that cadre allocation runs on a separate algorithm with its own group-rotation logic. Both lists must be airtight — and under the 2026 OM, both are submitted electronically with much tighter deadlines than before. Service preference shapes which life you'll live; cadre preference shapes where you'll live it.
