Power-shiftable multi-speed transmission in planetary design for a vehicle for an arrangement between an input shaft and an output shaft, characterized in that the multi-speed transmission features two parallel shaft trains, six shifting elements, at least two spur gear stages and three planetary gear sets, each with one sun gear, one ring gear and one planetary carrier with several planetary gears, whereas the planetary carrier is consolidated into one carrier, and that the two shaft trains are connectable to each other through at least two spur gear stages, whereas, through a selective intervening of the six shifting elements, different transmission ratio relationships can be brought out between the input shaft and output shaft, such that a multitude of forward gears, in particular nine forward gears, and at least one reverse gear, are able to be realized.