Capital structure is without doubt one of the most frequently studied and controversial areas of modern financial theory, and will certainly continue to receive considerable attention from researchers worldwide. There is still no universal explanation of how an optimal capital structure would be designed for maximum appreciation, despite the development of several theories focusing on the subject. Equity and debt are the two main financing options that in combination explain the business's capital structure. The results of several research studies conducted in the subject has many times pointed out that there are specific factors that are directly related to the company's capital structure, and that there are clear sectoral differences in corporate debt. A study of the capital structure is considered important and interesting to implement due to the reasons above and the purpose of this study is to analyze and try to explain the similarities and differences between different industries in terms of how growth, profitability and size affect the debt level. The choice of these industries was with the intention to create large industry differences and with the expectation to find characteristics in the capital structure at a later comparison. 

To achieve the study's aim, quantitative methods applied in which data was gathered from each company's financial statements. This was after statistical processing formed the basis for the study results and analysis. The results of the empirical data came to confirm the image depicted in publications and theories; the complexity of the subjects complicates the determination of the specific correlations. Factor impact and significance is often ambiguous and fails in its attempt to explain a relationship. However, what can be confirmed based on survey results, which also finds support from previous research, are the industry's internal influences prevailing at the factors influencing capital structure context.