The development of economies has been linked to the capacity to use energy. Oil has a significant impact on everyday life and oil price fluctuations are of concern to all countries because they have a major impact on countries' economies. Because oil prices have daily fluctuation with impact on demand, this study analyses the effects of oil prices on the main macroeconomic indicators of two oil-consuming countries before the war be-tween Russia and Ukraine. Given that Belarus and Portugal have different macroeconomic contexts, it is as-sumed that a change in oil prices will have different effects on each country's economy. We use Vector Auto-regression (VAR) models to show that changes in oil prices have a negative impact on the economic develop-ment of both countries. We also conclude that oil price shocks have a more profound effect on the Portuguese economy than on the Belarusian economy. Although oil prices have negative effects on macroeconomic indi-cators in both countries, these are more profound in Portugal. Furthermore, the negative impact is greater in the short term and weakens over the years. Based on a period before the war between Ukraine and Russia, this work provides valuable information for governments about the impact of oil prices and evidence the short-tern and long term effects.