Tiff’s Treats has had plenty of philanthropic efforts in its 21-year history. In celebration of that history and the warm cookie delivery bakery’s anniversary, Tiff’s Treats is giving 10 percent of its January sales back to its stores’ communities.

For every Tiff’s Treats order placed in January, customers can use unique coupon codes assigned to participating charities to help their charity receive extra funds. Tiff’s Treats will give an additional $10,000 donation to the charity with the most sales at the end of January.

“We can’t think of a better way to kick off another year of warm cookie delivery than by giving back to the people and organizations who help our business thrive,” says Tiffany Chen, Tiff’s Treats co-founder. “We love how this contest lets customers who are involved with charities help earn money for the causes that matter most to them.”

Nearly 300 charities in total are participating in the contest, with at least one per city. Some of the participants include March of Dimes and local chapters of Make-A-Wish, The Humane Society, and CASA. The 21st anniversary contest runs now through the end of the month.

This is Tiff’s Treats’ second year to celebrate its anniversary by giving a percentage of January sales to charity, with last year’s contest netting $40,000 for charity.