ENThe purpose of the article is to analyse differences in income in Lithuania during 2000–2011, and to study the trends of change of the phenomenon. In the period 2000–2011, research methods of studying income diversity changed (surveys on household budgets were conducted by the Department of Statistics assigned to the Government of the Republic of Lithuania). At the beginning of the studied period – in 2000–2008 – the average expenses of a household member were studied by grouping the data using the method of deciles. Later, household incomes were studied using quintiles. The data and the analyses presented in the article show that income diversification in Lithuania during the studied period changed, but it was much higher than the average of the EU-27.