Gap: 25% off Your Purchase + 8% Cash Back February 24, 2011 This post may contain a link to an affiliate. See my disclosure policy for more information. Starting today and running through February 26th, Gap is offering 25% off your entire purchase, online only! Just use code GAPSAVE25 at checkout. To sweeten this deal further, go through ShopAtHome and you’ll earn 8% cash back.