Annotation: Taxes are a major source of revenue to the state budget, and effective tax regulation of the economy requires the introduction of an acceptable level of tax burden on economic entities. Determining the optimal level of fiscal burden is an important task of the state's tax policy, which helps to maintain a sufficient level of filling the state budget and stimulate economic activity. This article builds an econometric model that investigates the impact of the tax burden on the growth of gross national product in Europe.