Affinity credit cards are cards that allow you to indirectly contribute to an organization via your credit card spending. You use your credit card like any other credit card, and a percentage of your spending is given to the organization. (Though the amount the organization actually gets from your card spending is rarely divulged.)
In some cases, the organization may get an ongoing licensing fee from the issuing bank for the right to issue cards with its logo, but, either way, you help the organization by using its credit card.
Below is a list of affinity credit cards from schools, non-profits, etc. E-mail if your organization has an affinity credit card you’d like listed here.