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Should I give to charity by check or credit card?
This might be blasphemy in the context of an audience that may be most focused on the gift itself, but you should be donating in a manner that helps advance the landscape, as well as your particular favourite charity. Almost 90% of businesses are in the process of trying to move away from issuing and receiving checks, and several countries in the world have already stopped using them. Checks are inefficient, costly and in a resource constrained environment like that facing most charities, create an opportunity cost that is even higher than the manual processing cost that flows directly.  As donors, we need to think about scale in a manner that many individual charities don't.  Send your donation via ACH!