Dunkin donuts free coffee

On 24 September 2026, Dunkin' officially announced its highly anticipated promotion in celebration of National Coffee Day, scheduled for 29 September 2026. To reward its loyal customer base, the coffee chain is offering a complimentary medium hot or iced coffee with any purchase made through the Dunkin' Rewards mobile application. This initiative is designed to drive engagement within their digital ecosystem while providing a significant value proposition to daily commuters and coffee enthusiasts alike. The offer is valid at participating locations nationwide, excluding delivery orders placed through third-party platforms. Company representatives emphasized that this annual tradition serves as a gesture of appreciation for the brand's dedicated community. In addition to the free coffee offer, Dunkin' plans to debut a limited-edition seasonal menu item on the same day, further incentivizing store visits. Customers are encouraged to activate the offer within the app prior to checkout to ensure the discount is applied correctly. This promotion highlights Dunkin's ongoing strategy to leverage digital rewards to maintain market share in the competitive quick-service beverage industry.