Dollar General Coupon, Save $5 The links in the post below may be affiliate links. Read the full disclosure Here. March 18, 2017 by SMFM Leave a Comment Dollar General is offering $5 Off $25+ Purchases with this digital coupon. If you’re shopping online, use promo code SAVEGREEN for the same discount. Plus, get Free Shipping on orders over $40. Keep in mind that this offer is for today only.