A modular and customizable tie bar system comprises a tie bar base, one or more tie bar covers, and a fastener. The tie bar base cooperates with a user's tie and comprises at least a mounting surface. Each tie bar cover comprises a cover plate and optional side walls. Each tie bar cover is preferably sized to cover and cooperate with the mounting surface of the tie bar base, has a decorative outer surface, and has an inner surface for facilitating attachment to the base. To facilitate removable attachment of the covers to the base, one or more fasteners such as magnets attach to the inner surface of the cover or to mounting surface of the base or to both. Preferably, several covers with differing decorative outer surfaces cooperate with a single base to allow for interchangeability and customization depending on the user's aesthetic preferences.