Business activities and their financing depend in many cases on the financial knowledge of the entrepreneur. In a crisis, it is best seen whether the entrepreneur can plan in an unstable environment or rely on external resources, such as business subsidies from governmental resources. This paper's main goal isto present the results of primary research conducted during autumn 2020, which illustrate the current situation within the Covid-19 pandemic on the financial management of sole proprietors and changes in their thinking on investment impact on governmentalsubsidies on that behaviour. The results are based on primary research (177 interviews) in the Czech Republic. Those findings are compared with secondary data –asurvey realized by the Association for SMEs, where 8% of them would survive current restrictions (lasts up to one month). In contrast, about 46% have sufficient reserves for more than three months in emergency mode. Moreover, the study confirmed a negative relationship to public support. Based on these results, this study confirmed that many self-employed people prefer to solve their current situation by their selves, not with governmental assistance.