Irwin Allen Schiff (; February 23, 1928 – October 16, 2015) was an American libertarian and tax resistance advocate known for writing and promoting literature in which he argued that the income tax in the United States is illegal and unconstitutional.
Judges in several civil and criminal cases ruled in favor of the federal government and against Schiff.
As a result of these judicial rulings Schiff was in a hospital prison serving a sentence of 162 months (13.5 years) at the time of his death at the age of 87.
The Federal Bureau of Prisons reported that Schiff died on October 16, 2015.Schiff was the father of businessman and former United States Senate candidate Peter Schiff.