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Wednesday, 4 November 2026
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Policy Explained

Washington voters to decide on Initiative 645 regarding income tax

Voters in Washington state will decide this November whether to repeal a new income tax on high earners that is scheduled to take effect in 2028.

FTMQ Politics, written by our newsroom0 views

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Picture: Tax Foundation
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Washington state voters will decide on Initiative 645 this November, according to the Tax Foundation. The ballot measure would reverse a decision made by the state legislature and prevent a new income tax on high earners from taking effect. [1]

The Tax Foundation reported that the state income tax on high earners is not scheduled to take effect until 2028. However, the law is already generating significant activity across the state prior to the vote. [1]

A date has been scheduled for oral arguments in a constitutional challenge to the new tax law, according to the Tax Foundation. Additionally, one Washington state lawmaker recently proposed lowering the income tax threshold to as low as $250,000. [1]

An income tax is imposed on individuals or entities based on the profits or income that they earn, and the computed rate generally varies depending on characteristics of the taxpayer. As FTMQ Politics reported earlier, tax policy remains a central focus on state ballots this election season. [3][5]

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In short

  • Initiative 645 on the November ballot would reverse Washington's new income tax on high earners.
  • The new Washington income tax is not set to take effect until 2028.
  • Oral arguments have been set for a constitutional challenge against the Washington tax law.
  • A Washington state lawmaker proposed dropping the high-earner threshold to $250,000.

Sources

Every paragraph above points to the numbered items it rests on. Read the originals here.

  1. [1]Washington Voters Will Decide Whether to Keep or Reject an Income Tax on High EarnersTax Foundation, 19d ago (the report this story comes from)

Background

  1. [2]2026 Missouri Proposition A on Wikipedia
  2. [3]Income tax on Wikipedia
  3. [4]Shawn Tully on Wikipedia
  4. [5]Colorado voters to decide on competing income tax ballot measures FTMQ Politics, 30d ago

Our newsroom writes these reports with the help of software, from the 5 sources listed and nothing else, and checks them against those sources. Facts can still be wrong or move on; the originals are the record. Spotted a mistake? Write to daniel@monsterkong.com.

Earlier reports of ours on the same people and subjects.

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