affinity card 
noun
A cheque card or credit card for which the bank donates a portion of the money spent using the card to a specific charity or other organization.The chief executive said the social card was the first affinity card in India....
- Although a recent survey showed that only 6% of those questioned had an affinity card, more than half said that they thought they would become more popular, with one in five adults saying that they would consider having one.
- The trust relies on donations and sponsorship, has an affinity card and often host jumbles sales and fairs to raise funds.