By Aaditya Vikram Parmar, Director, Career Power Mumbai Centres
One exam, more than twenty services. Your rank and your order of preference decide which one you get, so the preference form matters almost as much as the marks. Know the services before you fill it.
All India Services
Central Services, Group A
| Service | Work |
| Indian Foreign Service (IFS) | Diplomacy: embassies, consulates and the Ministry of External Affairs |
| Indian Revenue Service (Income Tax) | Direct tax administration and investigation |
| Indian Revenue Service (Customs and Indirect Taxes) | GST, customs and anti-smuggling |
| Indian Audit and Accounts Service | Audit of central and state governments under the CAG |
| Indian Railway Management Service | Management of Indian Railways |
| Indian Defence Accounts Service | Finance and audit for the armed forces |
| Indian Postal Service | Management of India Post |
| Indian Information Service | Government communication and media units |
| Indian Corporate Law Service | Administration of company law |
Group B services filled through the same exam include DANICS, DANIPS and the Armed Forces Headquarters Civil Service.
How allocation works
Vacancies and odds
The 2026 notification carried 933 vacancies across 23 services. Several lakh candidates apply, so roughly one in a thousand applicants makes the final list. The top ranks usually take IAS and IFS; revenue and accounts services follow.
Choosing your preference order
Frequently asked questions
Do I need a separate exam for IPS?
No. IAS, IPS, IFS and the central services are all filled through the Civil Services Examination.
Can I improve my service later?
Yes. Many officers reappear to improve rank, subject to attempt limits and service-specific rules in the notification.
Is the Indian Forest Service part of CSE?
It shares the Prelims with CSE but has its own Main exam and interview.
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