Both are government service, but the two differ in ways that affect where you live and how your career moves.
| Point | Central | State |
|---|---|---|
| Recruiting bodies | UPSC, SSC, RRBs, IBPS and others | State PSC, staff selection or subordinate boards |
| Posting | Anywhere in India, often with transfers | Within the state |
| Pay structure | Central pay commission levels | State pay rules, often modelled on the centre but revised on a different schedule |
| Language | English and Hindi; regional languages in several exams | State language is often compulsory |
| Reservation | Central lists; open to all states | State lists; benefits usually limited to residents |
| Competition | National | Mostly within the state |
The general studies and aptitude portions overlap heavily. The state paper and language are the extra work. See recruitment bodies in India for who conducts what.
Central and state notifications are listed together on Govtpvt.