The Ottoman Empire was in a bad economic situation in the last period and it had become the open market of the major states. Economic independence had become a shadow of the negative economic independence, such as capitulations and external debts. After the first World War, the country was occupied and the national struggle against these invasions started. After the success of the national struggle, negotiations for the signing of the Lausanne peace treaty began, but disagreements on economic issues in particular led to a deceleration. In the meantime, the Izmir economic Congress was organized to determine the future economic policies and to obtain the opinions of all sectors related to the economy. Another aim of the Congress is to show the European states the economic policies to be followed in the future. In general, our economic wishes were fulfilled in the Lausanne peace treaty. The only decision that does not fit our national interests is to maintain the customs duty rates from the Ottoman Empire until 1929. After the Lausanne peace treaty, the new state of the Republic of Turkey was established. When we look at the years between 1923 and 1930 when the economic structure of this state was established, we can see that most of the decisions of the Congress were implemented in this period, except for the decisions of the workers ' group. The demands of the farmers ' group to abolish the Aşar tax, Industrial Group's to Law of The Encouragement of İndustry and the establishment of the Merchant Group's Commercial Bank are among the important decisions put into practice.