Abstract: The article discusses the importance and necessity of universal declaration of income and property of the population of Kazakhstan. The analysis of the factors influencing the shadow economy and corruption is carried out. Obstacles and opportunities on the way to the formation of an economic transparency of the country and prospects for improving individual taxation using the model of universal declaration of income of the population are identified. This work was carried out using analytical and comparative research methods. Key words: Universal declaration, tax, shadow economy, corruption, individual income tax, property, personal income, taxation.