Some estimates to present scopes and limitations of the elderly pension in the Federal District, Mexico, amid its demographic ageing, are made. According to the latest census, the process of ageing is and will be faster than expected, and in such scenario, there will be substantial economic implications for the performance of the program. Official population projections are used, some assumptions are assumed and future values of the program in different circumstances are quantified. We conclude that the viability of the program is highly compromised without a deep strategy able to finance it.

Keywords: ageing, demographic projections, pension, non-contributory pension plan