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In this paper we analyse determinants of bank profitability of EU15 banking systems for the period 2001-2011. We use as proxy for banks profitability the return on average assets (ROAA), the return on average equity (ROAE) and net interest margin (NIM). We also measure the impact of the first and the largest wave of enlargement (10 new members in 2004) on EU15 bank profitability, introducing a dummy variable. The contribution of this paper for the empirical literature is that there are no other studies that deal bank profitability for all EU 15 countries for the period considered (2001-2011). The literature splits the factors that influence banks’ profitability in two large groups: bank-specific (internal) factors and industry specific and macroeconomic (external) factors. Our results are in line with the economic theory. Cost to Income Ratio, credit risk and market concentration had a negative influence in case of all measures of banks’ profitability, while bank liquidity only for ROAE and NIM. The size of banks had a negative impact on NIM, suggesting that bigger the bank is, smaller the net interest margin ratio is, but, on the contrary, in case of ROAA, had a direct effect. The market concentration had a negative influence, meaning that the increasing competition, as a structural point of view, increases banks’ profitability. The results show us that the process of European Union enlargement from 2004 does not have significant impact on EU15 banking systems’ profitability. It has a week and negative effect only in case of net interest margin. As policy recommendations, we suggest for authorities a better supervision for credit risk and liquidity and maintaining a competitive banking environment. For banks’ management we also recommend to monitor the credit risk indicators, optimizing costs and diversifying the sources of income.

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The recent European sovereign debt crisis proved public debt issues should not be easily approached. While, prior to the crisis, public debt was of little concern in most of the developed European countries, as there had been no recent episodes of sovereign default, the crisis revived longtime forgotten memories. It once again proved that, although at different debt levels, just like the developing countries the developed ones should fear high public debts and that public debt is almost always a two-sided story: although public indebtedness can promote economic growth, especially when debt resources are used for financing public investment expenditure, when the debt is very high it can negatively affect economic growth. Against this background, in this paper we aim to study the relationship between public debt and economic growth for a panel of 33 European countries (28 European Union Member States and 5 candidate countries to European accession) over the period 1990-2011. More specifically, we investigate if there is evidence of a non-linear (quadratic) relationship, both for the entire European countries group and for the developed and developing countries subgroups. The main sources of data are World Bank's World Development Indicators and International Monetary Fund's World Economic Outlook and Historical Public Debt datasets. The results of our study confirm the existence of a "U inverted" relationship, with a maximum debt threshold of about 94% of GDP. After this threshold public debt is expected to negatively affect the economic growth rate, due to higher interest rates, fear of public debt unsustainability and severe budgetary consolidation measures. However, this threshold is found to be more than twice lower in developing European countries compared to the developed ones, as the former enjoy lower credibility, higher vulnerability to shocks and depend more on external capital transfers.