JC Penney Coupon, Save $10 on $25! March 16, 2016 by SMFM Leave a Comment There is a new JC Penney Coupon! Through March 19th, JCPenney is offering up $10 off your $25 purchase with code MARSALE at checkout. If you prefer to shop in-store, you can go here to print your $10 off $25 in-store coupon. Note that exclusions apply so be sure to read the fine print.