A seatbelt device for a vehicle provided with: a webbing that restrains a passenger seated on a seat; a belt reel on which the webbing is wound; a motor that rotation-drives the belt reel; a motor control device that controls the motor; an input determination device that determines whether or not an input signal from a seatbelt operation section including the webbing is an artificial input signal; and a command output device that outputs a setting change command to the motor control device according to a determination result from the input determination device.