The Freedom From Religion Foundation promotes the constitutional principle of separation of state and church, and to educate the public on matters relating to nontheism. Incorporated in 1978 in Wisconsin, the Foundation is a national membership association of more than 30,000 freethinkers: atheists, agnostics and skeptics of any pedigree. FFRF is a non-profit, tax-exempt, educational organization under Internal Revenue Code 501(c)(3). All dues and contributions are deductible for income tax purposes.