For most people coffee is an affordable luxury, but on National Coffee Day you can get it a little cheaper than usual at some shops.

It falls on Tuesday, Sept. 29, this year. Here are a few of the deals offered on that date.

Duck Donuts: Tuesday’s offer is a free hot or iced coffee with any purchase. All locations will serve a coffee cake doughnut with streusel and powdered sugar to mark the occasion. duckdonuts.com

Dunkin’: This chain, internationally known for its coffee even though Donuts used to be part of its company name, wants to own the holiday by calling it National Dunkin’ Day. On Monday, it will start selling spelling special Dunkin’ day merchandise at shopdunkin.com. On Tuesday, the deal is a free medium hot or iced coffee with any purchase.  dunkindonuts.com

Krispy Kreme: Rewards members can get both a free brewed coffee and doughnut on Tuesday at participating shops, according to a news release. krispykreme.com

Peet’s Coffee: The chain is offering 25% off…



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