The main objective of this thesis is a research on inequality in Republic of Croatia. Inequality is an important research topic. On the one hand inequality can stimulate better work, investment in education and investment in general, but only if it results in market outcome, i.e. it results in difference in productivity. On the other hand, too much inequality reduces productivity because it prevents education of poor people, it brings political instability and it reduces potential domestic consumption important for the development of economy. On a national level inequality is getting insufficient attention. Some of the reasons for that are: difficulty in collecting data, the majority of experts thinks that it doesn't pay off to analyze this topic, there are ideological reasons not to view inequality as a problem so it shouldn't be treated as such. Moreover, inequality is often spoken of, but very little is actually known about it and because of this when talking about inequality many people imagine pensioners picking through garbage cans as one extreme and someone with expensive car as the other extreme. However, it is important to see what is happening with other 90% of the cases that don't belong to extremes. Surveys of household consumption that are performed every five years can be used for analysis on the level of countries. Survey of household consumption from 1998. was used by the World Bank for an extensive research of inequality and poverty in Croatia. To get the indicator of well-being that more realistically reflects differences in economic position of households of various sizes, for each household data was gathered about total available income which was divided by number of household members so for each household average income per member was calculated as a basic variable in analysis. Except for the research based on Survey of household consumption, inequality in Croatia was not researched until now. First comprehensive research was carried out by the Union of Science in 2017. Salaries were chosen as a measure of inequality because there is available data, unlike the data about income or possession, which is not available. Salaries are also main source of population's income, they determine volume and structure of consumption, they are indicative of allocating efficiency of labor market. Salaries show effects of education and countless other characteristics of individuals. Salaries are decisive of future inequality of individuals and pensions depend on them.