The Covid-19 infectious and deadly disease pandemic is a major global and health disease that emerged in early 2019, with major economic consequences. Small businesses are the most dynamic and risky segment of the economic structure, the same team the Covid-19 crisis has embraced and harmed many small businesses, their businesses, and the business itself. The suspension of work for several months has largely brought small economies to face liquidity and struggle to survive in the market. The thesis provides an insight into various fundamental determinants of business crises and defines the concepts of small businesses in Croatia and the city of Split, which affect the Covid-19 crises on their business. In the empirical part of the paper, research is conducted on a sample of 53 respondents in micro, small, medium, and large enterprises in the city of Split. The survey examines the opinion on the financial operations of the company and the same crisis Covid-19, whose impact on the business of the company. Many small entrepreneurs felt large financial losses and had to take on additional debt in order for their business to survive. The research established that the measures of assistance and support of the Government of the Republic of Croatia greatly helped small businesses in their operations, but were insufficient. Also, small companies with higher capitalization do not need additional borrowing to continue their business, unlike companies with lower capitalization, which occurs in the fourth wave of the pandemic, are likely to generate less income than in previous years, only a few will close permanently.