This thesis explores the accounting and tax monitoring of wages and other income in Croatia, analyzing key aspects of calculation, recording, and reporting processes related to these areas. The focus is on the legal framework governing income from employment, including procedures for contract drafting, personal deduction calculations, contributions, and taxes. Special attention is given to the specifics of various types of income, such as copyright and artistic royalties, as well as the unique aspects of wage calculations for board members and executive directors. The thesis also examines practical implications of unpaid wages and methods of reporting through the JOPPD form. The goal was to provide a comprehensive overview of tax obligations and processes that are crucial for compliance with regulations and ensuring the financial stability of businesses. Notably, the thesis uses laws and regulations that came into effect in 2024, along with earlier legislation still in force, ensuring both comprehensiveness and up-to-date information. This study offers insight into the complexities of the accounting and tax monitoring system, providing valuable information for understanding and practical application.