To reduce, restrict, or cease one's work or productivity as a means of social protest against increased marginal tax rates, limits on tax deductions, or the use of tax income for purposes one finds morally objectionable. Taken from the name John Galt, a character in Ayn Rand's novel Atlas Shrugged. Primarily heard in US, South Africa. Living abroad, I only have to pay U.S. taxes if my income exceeds $95,000 a year, so I'll just go Galt if I ever come close to earning that amount.