According to Giving USA, 72 percent of all U.S. charitable giving comes from individuals. Only 6 percent of charitable giving in the United States comes from corporations, and an additional 15 percent comes from foundations. Retention of charitable donors can be difficult, as only around 20 percent of donors give from year to year. However, those who are happy with the nonprofit's efforts are likely to give between 10 and 12 percent more in individual donations if they are provided with what they need from the charity. Charities that fully disclose how donations are being used are likely to see bigger retention rates than those that don't.