The aim of this study is to examine the impact of the FED's deviations from monetary policy rules on the Turkish economy. In other words, the spillover effect of the FED's monetary policy was examined. The dataset used in the study was divided into two parts as rule-based and discretionary periods with reference to Taylor (2012), and the interaction between the variables was examined using structural VAR models. The results show that deviations from monetary policy rules have quite significant effects on the Turkish economy in the period when the FED is closer to discretionary policy. Considering that the economies of developing countries such as Turkey are more affected by the monetary policies of the FED than the developed countries, it can be said that transparent and predictable monetary policies are an effective tool to be protected from these global effects. In addition, the diversification of the foreign trade portfolio and the strengthening of foreign exchange reserves are also extremely important in making the Turkish economy resilient to the shocks resulting from the FED's monetary policies.