The subject of this thesis are the specific aspects of the accounting records of a small company engaged in courier activities on the example of a small company Rhea d.o.o .. This thesis deals with an analysis of the impact of the COVID-19 pandemic on the financial stability and business performance of the company Rhea d.o.o. by analyzing the basic financial statements and individual financial indicators. The main goal of this thesis is to analyze the specific aspects of accounting and financial reporting in service activities for small businesses in the Republic of Croatia and to show on a specific example of a small business the specifics of accounting in the company Rhea d.o.o. which performs courier activity. In terms of importance, small businesses are an extremely important part of the economy both globally and nationally. All companies are obliged to keep accounting records and prepare financial statements, which are an important prerequisite for successful business and business decisions of both internal and external users. The difference in the manner of keeping accounting records and reporting is determined by the size of the business entity and the manner of doing business. The global health crisis caused by the COVID-19 pandemic has strongly affected the economy of most countries, including the Republic of Croatia. Although many sectors have been affected by imposed restrictions on movement and travel, the coronavirus crisis is affecting different sectors and businesses differently. Despite the negative business trends caused by the pandemic, some of the companies managed to take advantage of the difficulties in doing business and thus improved their business