These studies are actually derivatives of the Feasibility Study and are very similar in content, based on realistic indicators and estimating the feasibility of investing in some project. They often help to make decisions about how to handle a particular business idea. For example, they may answer questions about whether to continue the business operation(s) independently or to sell, rent or something else. Socio-Economic Feasibility Studies are often made for the purpose of concessions that are given from public authorities. Then, apart from the concession grantor, they are very important for the competitors as well, because their goal is to calculate the optimal amount of compensation that they can offer to the concession grantor, and which often consists of a permanent and variable part.