Promises by the State about payment of pension in the future are much like debt. For the purpose of fiscal planning, and analysis of pension reforms, it is important to compute the "implicit pension debt" (IPD) of the country. India's IPD comes about through workers and pensioners of centre, states and defence forces, and the funding gap of the Employees' Pension Scheme (EPS). This paper offers estimates of the IPD owing to three components: central (civil) employees, state government employees and the funding gap of the Employees' Pension Scheme, 1995. The IPD associated with these three, as of 2004, works out to Rs.2,003,405 crore or 64.51% of GDP. This is a substantial number when compared with the explicit internal public debt of the government of India at 84.86% of GDP (2004-05).