“…With studies on Vietnam, Xuan et al (2020a) argued that the business sector, type of export or domestic business, and the form of business registration have a close relationship with the size of the business capital. According to Xuan, Nguyen, and Ngo (2020b), factors of lines of business, type of business registration, location of production and business establishments, operating time of enterprises, and percentage of capital contribution of the organization in the capital structure of the business are the factors that affect the size of the capital of the business. Based on the above findings, our research model on factors affecting the capital size of enterprises in Vietnam is constructed as follows ( Figure 1 In which: QMV -dependent variable (million dong) is the size of the enterprise; NGANHNGHE (dummy variable) represents the business line of the enterprise, whether it is construction industry, service trade or agroforestry; XNKHAU (dummy variable) shows whether the business has an import-export business; LOAIHINH (dummy variable) represents the type of business, is a limited liability company (Limited), one member limited liability company, joint stock company or private enterprise; VITRI (dummy variable) represents the location of business operations in urban or rural areas; GIOITINH (dummy variable) represents the gender of the business owner or the decisive person in the business; THOIGIAN (years) shows the operating time of the business from the beginning of operation; TUOI (age) represents the age of the business owner or the decisive person in the business; SOTHANHVIEN (person or organization) represents the number of founding members, contributing capital to the enterprise plus the number of organizations contributing capital to the enterprise; VONGOP (%) represents the proportion of the organization's capital contribution to the total capital structure of the enterprise; LAODONG (person) represents the number of employees currently in the enterprise; ROA (%) represents the ratio of profit to assets of the business.…”