UPSC service preference is the field that decides which services you can be allocated to at all — and for CSE 2026 it closes at 6:00 PM on 25 November 2026. UPSC declared the Civil Services (Main) Examination 2026 written result on 5 November 2026, shortlisting 2,526 candidates for the Personality Test, and opened an online window from 11 to 25 November 2026 in which those candidates must update and submit their application form, Service Preference included. This guide lists the 23 services participating in CSE 2026 exactly as the Examination Notice names them, explains what Para B.4 of the Rules actually requires, and sets out the one omission that removes a candidate from service allocation entirely.
Quick Answer
Civil Services Examination 2026 recruits to 23 services and posts — 18 Group A services including the IAS, IFS and IPS, and 5 Group B services. Under Para B.4 of Examination Notice No. 05/2026-CSE, a candidate must mandatorily indicate an order of preference only for the services participating in CSE 2026 and for which the candidate wants to be considered. If no service preference is indicated, the candidate will not be considered for Service Allocation at all. The order is submitted in the post-result window, 11 to 25 November 2026 until 6:00 PM, on upsconline.nic.in, and cannot be changed once submitted. Candidates who want the IAS or IPS must additionally give a home cadre preference when the Commission asks for it. CSE 2026 advertises approximately 933 vacancies, including 33 reserved for Persons with Benchmark Disability.
The 23 Services Participating in CSE 2026
These are the services and posts listed in Examination Notice No. 05/2026-CSE dated 4 February 2026, in the Commission’s own order and with its own nomenclature. Use these names when you read the form — several have been renamed in recent years and a stale list will not match what you see on screen.
| No. | Service or Post | Group |
|---|---|---|
| (i) | Indian Administrative Service | All India Service |
| (ii) | Indian Foreign Service | Central Service, Group A |
| (iii) | Indian Police Service | All India Service |
| (iv) | Indian Audit and Accounts Service | Group A |
| (v) | Indian Civil Accounts Service | Group A |
| (vi) | Indian Corporate Law Service | Group A |
| (vii) | Indian Defence Accounts Service | Group A |
| (viii) | Indian Defence Estates Service | Group A |
| (ix) | Indian Information Service | Group A |
| (x) | Indian Postal Service | Group A |
| (xi) | Indian Post & Telecommunication Accounts and Finance Service | Group A |
| (xii) | Indian Railway Management Service (Traffic) | Group A |
| (xiii) | Indian Railway Management Service (Personnel) | Group A |
| (xiv) | Indian Railway Management Service (Accounts) | Group A |
| (xv) | Indian Railway Protection Force Service | Group A |
| (xvi) | Indian Revenue Service (Customs & Indirect Taxes) | Group A |
| (xvii) | Indian Revenue Service (Income Tax) | Group A |
| (xviii) | Indian Trade Service (Grade III) | Group A |
| (xix) | Armed Forces Headquarters Civil Service (Section Officer’s Grade) | Group B |
| (xx) | DANICS — Delhi, Andaman & Nicobar Islands, Lakshadweep, Daman & Diu and Dadra & Nagar Haveli Civil Service | Group B |
| (xxi) | DANIPS — the corresponding Police Service | Group B |
| (xxii) | PONDICS — Pondicherry Civil Service | Group B |
| (xxiii) | PONDIPS — Pondicherry Police Service | Group B |
A point worth absorbing early: the Indian Foreign Service is not an All India Service. It is a Central Service, Group A. Only the IAS, the IPS and the Indian Forest Service (recruited through a separate examination) are All India Services, and only they carry State cadres.
What Para B.4 Requires — and the Omission Trap
The relevant text of the Examination Notice is short enough to read in full, and most candidates have never read it. A candidate must mandatorily indicate an order of preference only for those services participating in CSE 2026 and for which the candidate is interested in being allocated. On recommendation by UPSC, the Government considers the candidate for allocation to one of the services for which the preference has been indicated, subject to other conditions. And then the sentence that matters: in case preference for none of the services is indicated, the candidate will not be considered for Service Allocation.
Law Update: What Omission Actually Does
Omitting a service is not a protest vote and it is not a safety mechanism. It is an instruction to the Government that you are not to be considered for that service in any circumstance. A candidate who lists only the IAS, the IFS and the IPS, and whose rank falls short of all three, is not slotted into the next service on some notional default list — there is no default list. The Government can allocate you only from the services you named.
The practical rule follows: list every service you would actually accept, in the order you would accept them. Put the ones you want least at the bottom. Leave out only a service you would genuinely decline if it were offered.
How Service Allocation Actually Works
- Merit first. Allocation runs down the final merit list produced after the Personality Tests, from rank 1 downwards.
- Then your preference order. At your turn, the Government looks at your list and allocates the highest-ranked service on it that still has a vacancy available to your category.
- Category matters. Vacancies are reserved for SC, ST, OBC, EWS and PwBD candidates as fixed by the Government, so the vacancy that is available to you is not necessarily the one available to the candidate immediately above you.
- Vacancy numbers are not final until late. The Examination Notice itself says the approximate figure of 933 may change once firm numbers arrive from the Cadre Controlling Authorities.
- Cadre allocation comes after. Only once you are allocated the IAS or the IPS does a State cadre get attached.
Building Your Order: Four Questions, Asked in Order
1. Which services would you decline outright?
Answer this honestly and in writing. For most candidates the honest answer is “none”, in which case all 23 go on the list. A candidate who would genuinely not join a Group B service after four attempts is entitled to say so — but should say it knowing that the alternative is another year of preparation, not a better offer.
2. What does the work actually look like?
- Field and general administration: IAS, IPS, DANICS, DANIPS, PONDICS, PONDIPS.
- Diplomacy and external affairs: IFS, with long postings abroad and a small intake.
- Revenue and enforcement: IRS (Income Tax) and IRS (Customs & Indirect Taxes).
- Audit, accounts and finance: Indian Audit and Accounts Service, Indian Civil Accounts Service, Indian Defence Accounts Service, Indian P&T Accounts and Finance Service, Indian Railway Management Service (Accounts).
- Railways: IRMS in its Traffic, Personnel and Accounts streams, and the Railway Protection Force Service.
- Regulatory and sectoral: Indian Corporate Law Service, Indian Trade Service, Indian Defence Estates Service, Indian Information Service, Indian Postal Service.
3. Where do you want to live for the next thirty years?
This is the question that quietly separates the services more than any pay matrix level does. The IAS and IPS place you in one State cadre for a career. The IFS moves you between countries. Several Central Services keep you largely in Delhi and a handful of regional offices. The Union Territory services keep you in Delhi and the islands. A preference order built only on prestige and ignoring this question tends to be the one candidates regret.
4. Have you written the whole list, top to bottom?
Then stop editing it. Para B.5 bars any change once submitted, with the sole exception of address and contact corrections notified within seven days of the result notice. Enter the order, submit, and save the unique reference number UPSC generates and sends to your registered email and mobile.
Myth-Bust
Myth: “Rank-wise post predictors tell me which service I will get, so I can design my list around my expected rank.”
Reality: Those tables are built from past years’ last-allocated ranks, which move every year with the vacancy position, the category-wise reservation and the preference orders of everyone above you. They are a rough historical guide, not a forecast. Nobody — including UPSC — knows the cut-off rank for a service before allocation is run. Build your list on what you want, in order, and let merit do the rest.
Mistakes That Change Outcomes
- Listing three services and stopping. The most expensive mistake in the form.
- Not submitting because nothing needed changing. Para B.3(c) requires every shortlisted candidate to log in, verify and finally submit, or no e-Summon Letter is issued.
- Using an old list of service names. The Railway services were restructured into the Indian Railway Management Service streams; a list written from a 2019 guide will not match the form.
- Assuming the IFS is an All India Service and therefore giving it a cadre preference. It is a Central Service, Group A.
- Skipping the home cadre field while ranking the IAS or IPS first. The two decisions are separate, and the cadre decision has its own consequence.
- Submitting in the last hour on 25 November 2026. The window closes at 6:00 PM and the Commission has said it will not entertain correspondence from candidates who miss it.
Verified Dates and Figures for CSE 2026
| Item | Verified detail | Official source |
|---|---|---|
| Services participating in CSE 2026 | 23 | Examination Notice No. 05/2026-CSE, 4 February 2026 |
| Vacancies advertised | approximately 933, including 33 for PwBD | Same notice; final number may change |
| PwBD break-up | 7 blindness and low vision; 11 deaf and hard of hearing; 8 locomotor disability; 7 multiple disabilities | Same notice |
| Prelims 2026 held | 24 May 2026 | Same notice |
| Mains 2026 held | 21–30 August 2026 | UPSC notice dated 5 November 2026 |
| Written result declared | 5 November 2026 | UPSC notice; PIB release 2333275 |
| Candidates shortlisted | 2,526 | Roll-number list in the UPSC result notice |
| Preference submission window | 11 to 25 November 2026, until 6:00 PM | UPSC notice, para 5.3 |
| Changes after submission | not permitted, except address and contact | Examination Notice, paras B.3 and B.5 |
Where to Read Next
- UPSC Cadre Preference 2026: The Four-Group Policy and What You Fill in DAF-II — the second half of the same decision, for IAS and IPS aspirants.
- UPSC DAF 2 (2026): Every Field Explained
- UPSC Personality Test 2026: Marks, Board and the 2,526-for-933 Maths
- UPSC Interview Documents 2026: Every Original to Carry to Dholpur House
- UPSC Mains Marks 2026: When the Mark Sheet Is Released
