Модель реального обменного курса рубля с марковскими переключениями режимов

In this paper we analyze the relationship between the real Russian ruble exchange rate and real oil prices using the error correction model with Markov regime switching, which allows for changes in exchange rate policy. We find that during the period 1999-2018 real exchange rate dynamics was characterized by two clearly distinguishable regimes, one with fast and the other with slow adjustment to long-term equilibrium in response to oil price shocks. Further model testing shows that long-term relationship between real exchange rate and oil price is invariant to regime change. We also find that, despite adoption of a floating exchange rate policy in 2014, inflexible real exchange rate regime has been periodically identified in recent years. This could be due to the new budget rule, according to which Russian Ministry of Finance in February 2017 started purchasing foreign currencies in amount of excess oil and gas earnings of the federal budget.