What percentage of toal income is a nonprofit obligated to give.. we are a nonprofit and our mission is to award one time scholarships to area students our target revenue for 2009 is $375,000 is there a limit or cap to how much we can give ?

What percentage of income is a nonprofit obligated to give to charity. We are a small nonprofit and our revenue for 2009 is $375,000 what percentage of this amount is allowable to give to area students for scholarship awards?