DITCH ALL THE DEDUCTIONS:

America the charitable: a few surprises (Mark Trumbull, 11/27/06, The Christian Science Monitor)

Charitable giving plays an even larger role in the economy than is suggested by some $260 billion in annual contributions. Each dollar of giving appears to create $19 of extra national income, according to a book released this past weekend. [...]

One thing that's long been known: The US leads the world in levels of charitable activity. The pattern runs from the rich, steeped in long tradition of philanthropy, to the poor. Those making $20,000 or less a year give away more, as a share of their income, than do higher income groups.