The highest marginal rate in U.S. history was… by Danny Nelson | May 26, 2026 | Did You Know? Did you know? The highest marginal tax rate in U.S. history was 94% in 1944 for incomes over $200,000 (which is about $3.8 million in today's dollars). FB LI X Submit a Comment Cancel replyYou must be logged in to post a comment.
