Some current Kohls' coupon codes are:
FATHER30: Get 30% off with Kohl's charge card - valid till June 11, 2014
JUNEMVC: Get free shipping with Kohl's charge card - valid till June 11, 2014
SUNNY15: Get 15% off
DADSDAY10: $10 OFF your men's apparel and accessories and luggage purchase of $30 or more