Banana Republic: Up to 30% off Today Only!September 24, 2010 This post may contain a link to an affiliate. See my disclosure policy for more information. Today only, you can get 25% off at Banana Republic, or if you use your Banana Republic, Gap or Old Navy credit card, you’ll get 35% off! Just use coupon code BRGIFT at checkout.Don’t forget to go through Ebates! You’ll get 15% cash back from your Banana Republic purchases.