Offer valid only from 3/10/26 to 3/12/26 at participating US Smashburger® retail locations. Offer available only for purchases made online through smashburger.com or Smashburger® app during regular business hours. Store hours may vary. Offer to receive a $4 discount on your order when you make a minimum purchase of $20 (before taxes). To redeem offer, must enter promo code ONLINE420 at checkout. Limit of one (1) offer may be redeemed per customer and per transaction. Discount does not apply to any applicable sales tax. Cannot be used in conjunction with any other offer, promotion, or discount. Not valid on previous purchases. Not valid on orders with third party delivery. No cash value (unless prohibited by law, then cash value is $.005). No substitutions. No rainchecks. Company reserves the right to withdraw or change the offer’s terms and conditions at any time, at Smashburger’s discretion, and without notice. While supplies last. © 2026 Smashburger IP Holder LLC. All rights reserved.