Development of an overlapping generations model for the Russian economy for long-term forecasting of the pension system

This paper presents a dynamic overlapping generations general equilibrium model for the Russian economy to assess the economic and fiscal effects of the 2018 pension reform, which raised the statutory retirement age. The model incorporates realistic demographic projections, variable labor supply responses, and exogenous scenarios for oil prices. It evaluates the impact of the reform across a range of future demographic and external conditions by comparing post-reform trajectories of macroeconomic aggregates, public deficits, and tax rates with baseline scenarios without reform. The results show that raising the retirement age moderately reduces consumption in the short run but leads to more robust growth in output, investment, government spending, and exports in the long term. Pension reform improves fiscal sustainability by lowering the required budget-balancing VAT rate and pension fund deficit, especially under adverse demographic conditions or low oil prices. The fiscal effect of reform is muted in optimistic demographic scenarios with strong labor force growth, but remains significant when population aging intensifies fiscal pressure. These findings highlight the importance of structural reforms for long-term macroeconomic stability and underscore the critical role of demographics and external shocks in shaping pension system performance.