Also found in: Idioms.
Informal; to cease working in response to punitive taxes. That is, when taxes become sufficiently high as to disincentivize work, one goes Galt as a form of protest. For example, if taxes are 100% on all income over $90,000, no one has an incentive to earn more than $90,000 and one may therefore work less. Going Galt under a marginal tax system is generally irrational because one's post-tax income is almost always higher than it would have been had one stopped working and gone Galt. The term derives from a major character in Ayn Rand's novel, Atlas Shrugged.