PurposeFew studies have analysed the determinants of exports in emerging economies, which are critical in the exporting reality of firms. Two variables decisively affect the export performance of firms – their size and their export experience. This paper analyses the relationship between size and export experience in the export intensity of Brazilian firms. In addition, it considers two variables (location and sector) that identify firms in Brazil and could affect their export intensity. This research answers the question of which characteristics of Brazilian companies determine their export intensity.Design/methodology/approachA statistically significant sample of 318 firms is collected from Brazilian exporting companies. Regression analysis is performed, and data describing the relationship between the export determinants and the export intensity of Brazilian firms are presented. Three evaluation models are proposed. In the first, the location and sector variables are considered. In the second, the firm size, firm location and sector are presented. In the third, the firm size, export experience, location and sector are proposed.FindingsThe results of the third model confirm that only export experience is statistically significant. Therefore, there is no relationship between firms' size, location and sector and export intensity for companies in Brazil.Originality/valueThis work shows the organisational characteristics that affect export performance in Brazil from the firm’s perspective; these are aspects that have been analysed less in emerging economies.