Taxpayer check-off system
The taxpayer check-off system allows U.S. taxpayers to contribute $3 of their annual federal income tax payment to a public fund for financing presidential elections. To contribute, taxpayers simply check a box on their tax return that says that they want to participate in this system. Making the contribution does not raise or lower an individual’s taxes; it simply deposits $3 of the tax payment into the presidential election campaign fund. See also Matching funds. Read more about Taxpayer check-off system