Dunkin' Donuts Promo Codes in September 2026

Joining Dunkin' Rewards is free and unlocks points on every purchase. Sign up through the app or click "Join Rewards" on the website. With ten points per every dollar spent, here's how much you need to spend to earn rewards:

• $15 for 3-count MUNCHKINS® Donut Hole Treats.

• $15 for 6-count Hash Browns

• $30 for a free donut

• $60 for a free large coffee

Think of it this way. If a large coffee usually costs you $6, then you'll get a free coffee on every tenth drink. This rewards program is for those who make Dunkin a part of their weekly routine.

Where you apply the code depends on how you're ordering:

Online orders:

1. Select GrubHub, Uber Eats, or DoorDash for delivery at Dunkin.com.

2. Apply the coupon at that delivery service's checkout.

Dunkin' app (easiest method):

1. Apply the code at checkout for pick-up, walk-up, or drive-up orders.

2. Enter your coupon in the box provided before paying.

In-store:

1. Pull up the QR coupon on your phone.

2. Scan it at the register.

The app is the most reliable method, since delivery service coupons don't always sync with Dunkin's own promotions.

Existing American Express Gold credit card holders earn up to $7 in monthly statement credits at participating US Dunkin' locations. That adds up to $84 back per year, which can help cover the cost of a weekly coffee habit.

You must enroll the offer through your AmEx account first, so it doesn't apply automatically. To find the enrollment link, scroll to the bottom of the Dunkin' website and click the blue "American Express" logo. We recommend this for existing American Express card holders. It isn't worth going through all this if you don't already have American Express.