This article considers the problem of inflation in the modern economy of Russia. First of all, the importance and relevance of the problem of rising prices in Russia is assessed. It is undoubtedly one of the key economic problems of the country. The main purpose of this work is to use econometric methods for analyzing medium-term trends in the dynamics of inflationary processes in the Russian economy. The autoregression model is the main econometric method used in this work. In the course of the work itself, we have analyzed the term “inflation” itself and the depth of the problem in Russia, collected the statistical data on the inflation rate, studied the theory of autoregression and forecasted the inflation for the next month in the Gretl. Forecasting of CPI for May 2019 is carried out in accordance with the Box-Jenkins method.