A country having a stable economy is directly related with its financial stability. Especially in recent years, we face the incurring debts as the most important problem of the individuals and countries, these problems must be taken into consideration, and the influence of indebtedness on economic stability must be investigated. In other words, the source of the excessive indebtedness, which directs the economic stability, must be defined well. For this purpose, in the study, the credit bubbles have been considered as the factors triggering the indebtedness, and the effects of the credit bubbles on economic instability in Turkey has been investigated. For this purpose, first of all, the dates when the credit bubbles were incurred were determined, and then the factors influencing the economic instability have been examined. In this study, the three-month data of the 1998:01-2016:01 period for Turkey, the economic instability indicators, and the credit bubbles have been considered. By using the Sup ADF (SADF) and Generalized Sup ADF (GSADF) tests, the credit bubbles were determined.