A touch display device and a driving method thereof are discussed. The touch display device can include a display panel, a plurality of touch electrodes that are arranged in the display panel, and a plurality of touch circuits that are connected to the plurality of touch electrodes and are supplied with a load-free driving signal. Each touch circuit stores an offset voltage of the touch circuit, is supplied with the load-free driving signal from the touch electrode, corrects the load-free driving signal on the basis of the offset voltage, and outputs the corrected load-free driving signal.