Freedom From Religion Foundation (FFRF) is a legal organization founded by atheists to oppose religious expression in the public square. Founded in 1978, FFRF regularly sues schools and municipalities for holding public prayer, displaying religious symbols, and similar activities. 
FFRF is often at odds with religious-based legal groups like Alliance Defending Freedom (ADF). FFRF sued the IRS for not enforcing pastor neutrality at the pulpit after pastors engaged in political speech on Pulpit Freedom Sunday, a protest event sponsored by ADF. The IRS settled with FFRF. 
Freedom From Religion Foundation took in $5,195,692, spent $5,692,655, and had $15,972,114 in total assets in 2018.  Revenues and assets were lower than in 2017, while expenses were higher by over $1.2 million.  Almost half of the higher expenses were related to employee salaries and benefits.
FFRF spent nearly $1.15 million on “advertising and promotion” in 2018, almost one-fifth of its expenditures that year. 
Over $1.3 million in 2018 was provided to FFRF by dues-paying members, of which FFRF claims 32,000.  Almost $2.4 million of its revenues came from donations; notable organizational funders include the Adam R. Rose Foundation, the Stiefel Freethought Foundation, and the Craigslist Charitable Fund. Other donors funded FFRF with donor-advised funds through Fidelity Investments Charitable Gift Fund and Schwab Charitable Fund. 
The Freedom From Religion Foundation has a number of minor and major programs.  Its minor programs include cash awards for winners of student essay competitions, a monthly newspaper, books and other literature, and sending staff members to events and debates. It gave $56,750 in essay awards in 2018 and had 585,000 downloads of its podcast in 2017. 
FFRF’s major program is litigation against public displays of religious symbolism or religious practice, which it claims violate the Constitutional prohibition on the establishment of religion.  It regularly sues municipalities, public schools, and other government entities to prevent prayer, remove religious symbols, and prohibit other customary displays of civil religion.
It won a number of cases in 2018, including removal of a nativity scene from a public school. Approximately 500 of its legal letters and threats of legal action issued in 2018 were against schools. 
In 2019, it forced an Ohio school to remove a plaque bearing the Ten Commandments. However, a right-leaning religious liberty group, First Liberty Institute, said that the FFRF argument is in contrast to a U.S. Supreme Court decision made in June 2019 in favor of religious symbols on public property. 
FFRF settled with the Obama administration in 2014 after the IRS agreed to monitor pastor speech at the pulpit. FFRF had filed a lawsuit in 2012 accusing the IRS of not enforcing the Johnson Amendment, a 1954 law which, among other things, bans pastors at tax-exempt churches from engaging in political speech at the pulpit. A FFRF spokesperson later told LifeSiteNews that the lawsuit was dropped because the IRS agreed to greater oversight of non-profit organizations. 
FFRF also engages in lobbying in Washington, D.C. A June 10, 2019 blog post on FFRF’s website claims credit for the House Committee on Ways and Means dropping an amendment which would allow tax-free 529 education accounts to pay for educational expenses for homeschooled and privately-educated students.  FFRF claims that its lobbyist and an allied group convinced Rep. Richard Neal (D-MA) to abandon the amendment. However, the Washington Examiner reported that the amendment passed the Committee with bipartisan support and was later stripped in the House Rules Committee thanks to pressure from House Speaker Nancy Pelosi (D-CA). 
Gaylor and Barker serve on the Board of Directors of the Women’s Medical Fund, an abortion charity co-founded by Gaylor’s mother. More than 14,000 women have received financial assistance from the Fund for abortions. 
Rebecca Markert is FFRF’s legal director. She was the first in-house staff attorney at FFRF in 2008 after working for then-U.S. Senator Russ Feingold (D-WI). Markert is admitted to practice in Wisconsin, Michigan, three federal District Courts, and the U.S. Supreme Court.