One of Evreward's most popular merchants since 2005, Banana Republic offers coupons, cash back rebates and rewards, with savings as high as 75% off. Banana Republic discount coupons are seasonal, appearing every three to four months, but can be less valuable than similar merchants. Even when Banana Republic doesn't have a coupon, you can always get up to 18% cash back, and other great rewards, with every purchase.