The invention relates to a multi-stage gearbox of planetary construction, in particular a splitter gearbox of a working machine. The multi-stage gearbox is equipped with a housing (1) in which four planet sets (4, 5, 6, 7) and a plurality of shafts are accommodated, and is equipped with shift elements which are formed by at least one brake and clutches, and by means of the specific actuation of which different transmission ratios can be produced between a drive shaft (2) and an output shaft (3; 20; 28; 35; 41; 44; 45; 47; 48). The multi-stage gearbox is characterized in that a drive shaft (2) is connected to a web of a second planet set (5) of which the sun gear is coupled to a third shaft (14; 31; 32; 36; 49) and the internal gear is coupled to a fourth shaft (15; 23; 24), wherein the output shaft (3; 20; 28; 35; 41; 44; 45; 47; 48) is connected to a web of a fourth planet set (7), and wherein a fifth shaft (16; 27; 40; 46; 52) is fixable to the housing (1) by means of a first brake (8).