Banana Republic: 25% off Today Only!September 21, 2010 This post may contain a link to an affiliate. See my disclosure policy for more information. Today only, you can get 25% off your purchase at BananaRepublic.com! Just use coupon code BRGIFT at checkout.Don’t forget to go through Ebates! You’ll get 15% cash back on your Banana Republic purchases! That’s right, 15%!