The numbers
1,80,899 postings of 16,367 IAS officers from the Department of Personnel's records, plus 116 officials we researched by hand: 154 documented transfers, 52 moves into companies and 355 sources.
Where the numbers come from
The IAS figures are computed from the executive record sheets on the Department of Personnel and Training's SUPREMO directory, as collected by the india-ias-officers project (snapshot of 2026-09-07, Open Database License). A move is a posting to a different office; a promotion in the same office is not. About two in five rows in the records are blank placeholders ("N.A. Not Available"); they are left out.
Tenure counts only postings that have ended, so officers still in a post do not shorten recent years. Records reach the Department late, so the last two or three years are incomplete. Other services (IPS, IFS, state services) have no public record like this; their figures here come only from our own research.
Our structured research database is available on request.