Magnetax or if misspelt magnatax is the best promotional tax disc that can be digitally printed. We can produce these tax discs with any image. The magnetax/magnatax is a self adhesive magnetic ring with foil circular tax disc. It has a universal appeal to all car owners and already has an established market in the retail sector through shops like Halfords. One of the great advantages of this product is that it ensures the advertising message lasts and lasts.