This article has presented a short–term macroeconomic indicator, the index of monetary efficiency, which is an aggregate of two subindices, i.e., monetary stability and monetary freedom. An econometric model has been constructed, in which the GDP depends on the index of monetary efficiency with a lag of 8 months, which allows for the proactive prediction of economic growth. All analytical tools have been evaluated based on the statistical data of the Bank of Russia with a monthly breakdown.