This paper gives an overview of the credit risk model that has been developed for the Estonian banking system. The non-performing loans and loan loss provisions of the four largest banks and the rest of the banking sector have been modelled conditional on the underlying economic conditions: economic growth, unemployment, interest rates, in- flation, indebtedness and credit growth. The model highlights the importance of economic growth as the most influential factor behind the soundness of the banking sector in the latest downturn. The expected fall in output volatility will probably decrease the relative importance of output growth and increase the role of interest rates in the future.