To calculate the carrying capacity of a truck, the first step would be to ensure you understand the terminology to find out the carry capacity. To begin, the GVM or Gross Vehicle Mass is the maximum weight a truck is permitted to have. The GVM is determined by the truck’s manufacturer; it can be located on the registration papers or plate.  The TARE weight is the truck’s unloaded weight including fuel. The TARE weight is located on registration papers. Furthermore, the carrying capacity is the maximum weight a truck can sustain.  The Carrying Capacity can be calculated by subtracting the TARE Weight from the Gross Vehicle Mass.