Smashburger Restaurant Coupon: Any Burger or Big Dog B1G1 Free (Valid Thru 9/16)

• Valid 9/12/26–9/16/26 at participating U.S. Smashburger locations.
• Smashburger Rewards members: Buy one burger or Big Dog, get one free.
• Qualifying item must be in cart for offer to appear.
• Premium modifiers excluded and cost extra.
• Must have a valid Smashburger Rewards account and be signed in to redeem.
• New Rewards members receive the offer one day after registration.
• Limit one BOGO burger or Big Dog offer per day, per Rewards account.
• Offer must be presented at time of purchase.
• Cannot be combined with other offers, promotions, or discounts.
• Not valid on previous purchases, catering, or third-party delivery orders.
• Terms are subject to change or withdrawal at Smashburger's discretion.
• Please see the original post for additional details & give the wiki and additional forum comments a read for helpful discussion.

Smashburger [restaurant locator] has for SmashRewards Members (free to join): Buy One Burger or Big Dog, Get One Free when you redeem the reward in your account. Select free in-restaurant pickup to save on fees.

Thanks to Community Member ctcsd for sharing this deal.

Note: Must add quantity of 2 burger or Big Dog items to cart and redeem the reward in your account to receive discount. New Rewards members receive the offer one day after registration. This offer is only valid at participating locations.