BharatNotes The Government of India replaced the 5-zone cadre allocation system (introduced in 2017) with a 4-group alphabetical rotation system via an Office Memorandum dated 23 January 2026, applicable from CSE 2026 and IFoS 2026 onwards. All 25 cadres are arranged alphabetically into four groups; allocation cycles through all 25 cadres in cycles of 25 candidates with structured insider-outsider rotation.
Background — the old 5-zone system (2017–2025)
The previous cadre allocation system (notified 2017) grouped the 26 cadres into 5 zones. Candidates chose a zone, and allocation was within the zone. Criticism: zone groupings felt arbitrary, some zones were heavily oversubscribed, and the outsider distribution was uneven. The 5-zone system was also seen as enabling geographic clustering of preferences.
The new system — notified 23 January 2026
The Government of India issued an Office Memorandum dated 23 January 2026 replacing the zonal system with a 4-group alphabetical framework, applicable from:
- Civil Services Examination (CSE) 2026 onwards
- Indian Forest Service (IFoS) Examination 2026 onwards
Note: The number of cadres is now 25 (not 26) — Dadra & Nagar Haveli and Daman & Diu merged in 2020 and their UT segment is within AGMUT.
The 4 alphabetical groups
| Group | Cadres |
|---|---|
| Group I | AGMUT, Andhra Pradesh, Assam-Meghalaya, Bihar, Chhattisgarh |
| Group II | Gujarat, Haryana, Himachal Pradesh, Jharkhand, Karnataka, Kerala, Madhya Pradesh |
| Group III | Maharashtra, Manipur, Nagaland, Odisha, Punjab, Rajasthan, Sikkim, Tamil Nadu |
| Group IV | Telangana, Tripura, Uttarakhand, Uttar Pradesh, West Bengal |
How the allocation works
Insider allocation (approximately 1 in 3 seats): Candidates who opt for their home state as their preferred cadre, and whose state falls in their allocated group, may be allotted on insider basis. Roughly one-third of vacancies in each cadre are designated for insiders.
Outsider allocation (remaining two-thirds): The roster rotates through the 4 groups in cycles of 25 candidates. Allocation proceeds alphabetically through each cadre within the group:
- Group I cadres fill first (AGMUT → AP → Assam-Meghalaya → Bihar → Chhattisgarh)
- Then Group II, Group III, Group IV
- The group that headed the previous year's cycle moves to the bottom the following year
Year-to-year rotation:
- Year 1 cycle begins with Group I at top
- Year 2: Group II moves to top; Group I drops to bottom
- Year 3: Group III leads; Year 4: Group IV leads
- Year 5: returns to Group I — completing a 4-year rotation cycle
Key changes vs the 2017 system
| Feature | 2017 (5 zones) | 2026 (4 groups) |
|---|---|---|
| Number of zones/groups | 5 | 4 |
| Basis of grouping | Geographic zones | Alphabetical order |
| Rotation | No annual rotation | Annual group rotation |
| Insider formula | Zone-based | Explicit ~1-in-3 insider ratio |
| Transparency | Criticised as opaque | Mechanical roster — more transparent |
| Applicable from | CSE 2017 | CSE 2026 and IFoS 2026 |
Why the change matters for aspirants
Under the old system, candidates could strategically pick a less oversubscribed zone. Under the 2026 system, the mechanical alphabetical rotation significantly reduces zone-gaming. A candidate allocated to Group I in CSE 2026 has a higher probability of getting AGMUT or Andhra Pradesh as an outsider than under the old system.
