A challenge gift is a great way for a donor to inspire and encourage other donors. Typically, a donor will commit to donating a specific amount of money to a program or cause, with a precondition–or challenge–that all other donors must meet a goal or take an action within a certain time period in order for the gift to be fulfilled. Common challenges include goals for total money raised or total number of donors, as well as dollar-for-dollar matches that effectively double or triple the impact of all donations up to a certain amount.