Millionaire Tax Advances in Washington State as Legal Duel Looms

Washington state is set to approve a new tax on millionaires, a measure that would shift how the state raises money and set off a likely court fight over a nearly century-old legal ruling.

The state’s Democratic-controlled House of Representatives passed the proposal late Tuesday after lawmakers debated through Monday night. The bill now goes to the Senate, where it is widely expected to win approval.

Governor Bob Ferguson, also a Democrat, vowed to sign the measure, saying it would “apply to less than one half of one percent of Washingtonians, but make life more affordable for millions.” Enactment ...