Challenge gifts:  A challenge gift represents a non-contingent gift (not dependent on the gifts of other donors) to a charity with an accompanying "challenge" for other donors to also support the same charity.

Matching gifts:  A matching gift represents a gift that is contingent (dependent on the gifts of other donors) either incrementally or wholly on: 

• Gifts raised for one or more specific projects (restricted giving) or for unrestricted purposes, and/or

• Gifts raised during a specific period of time.