Charitable organizations certainly prefer to get your money now. But some charities, particularly foundations and endowed nonprofits, don’t use the money they receive right away, either; instead, they aim to grow their endowments by taking in more than they give away each year. For example, in 1999, foundations took in more than $90 billion but distributed less than $25 billion. That is why one analysis concludes that “donors should ask not just how, but how soon, their gifts will be used.”