In addition to a separate, FREE $10 bonus for adding $10 or more to a Dunkin’ Donuts Perks Rewards Card via the Dunkin’ Donuts Perks Mobile App and Masterpass by Dec 30 (Note: it has been reported that Visa cards can also be linked to Masterpass, for those who don’t have a MasterCard), it appears that there are additional savings opportunities available from certain credit card providers that could be stacked with this promo offer:

Slate Chase cardholders can currently receive 10% back on their DD purchase

AmEx is also offering to select customers a $5 statement credit for $5 DD purchases thru 01/15/2018 (single purchase, not split across multiple transactions)

in-restaurant at participating Dunkin’ Donuts via Dunkin’ Donuts mobile app Re-loading of DD Cards is included if made via DunkinDonuts.com or Dunkin’ Donuts mobile app. All other online and mobile app purchases are excluded. See AmEx for details.

$5.00 Dunkin Donuts AMEX OFFER ON MOBILE APP