Considering that we live and work in a time where ideas for new projects arise every day, but also more and more complex projects are contracted and finalized every day, and often the value of these projects exceeds astronomical amounts. The more complex a project is, the greater the probability of failure. Accordingly, each project requires an extremely dedicated approach, that is, thorough preparation and set analysis in order to minimize the risk of failure. It is precisely for this reason that companies, or investors, decide to create an investment study in order to assess the risks or ensure the success of the planned investment. An investment study is also called a profitability study, so the name itself explains the function. As such, the investment study contains economic and financial analysis, and is a good indicator of future project costs. This document presents an investment study on the example of Hotel X and through it will be conducted a market analysis, the structure and dynamics of employment, the dynamics of investment realization, economic and financial analysis, sensitivity analysis, etc. Since the investment study needs to be justified , calculations were made that show the return period of the investment itself, that is, the internal rate of return was calculated for a period of ten years. In addition, after obtaining the net present value of the investment, the investor decides on the further continuation of the project. The most important role or outcome of the investment study is the calculation of the expected profitability of the project through a series of usual so-called static and dynamic project indicators and financial statements. If the study shows a positive result or the profitability of the project, it is considered successful.