Washington voters face Initiative 645 on the November 3, 2026 ballot, which would repeal the 9.9% tax on household income above $1 million enacted by the Legislature and signed by Governor Bob Ferguson in March 2026. The measure, backed by Let’s Go Washington, qualified after more than 500,000 signatures were submitted and certified in July. Opponents, including labor unions and the governor, have mobilized against it, citing projected losses in funding for K-12 education, higher education, and human services. A June 2026 poll showed 57% opposition. Washington voters have rejected multiple prior income-tax-related measures, including a 2024 capital gains tax repeal effort that failed by a wide margin, reinforcing trader expectations that the repeal will not pass.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated22% chance
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Nov 3, 2026
22% chance
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Nov 3, 2026
Initiative Measure No. 645 (I-645, filed as IP26-645) is a ballot measure scheduled to appear in the statewide general election currently scheduled for November 3, 2026, which would repeal the state's tax on households earning over $1 million a year and prohibit future state and local taxes on income, among other items.
This market will resolve to “Yes” if this ballot measure is approved as a result of the Washington statewide general election currently scheduled for November 3, 2026. Otherwise, this market will resolve to “No.”
If voting on the specified ballot measure does not occur, or the results thereof are not known definitively, by March 31, 2027, this market will resolve to “No”.
Subsequent litigation or any failure to implement the measure will have no impact on the resolution of this market.
This market will resolve based on a consensus of credible reporting. If there is ambiguity, this market will resolve solely based on official information from the State of Washington, including the Washington Secretary of State (https://www.sos.wa.gov/). Washington voters face Initiative 645 on the November 3, 2026 ballot, which would repeal the 9.9% tax on household income above $1 million enacted by the Legislature and signed by Governor Bob Ferguson in March 2026. The measure, backed by Let’s Go Washington, qualified after more than 500,000 signatures were submitted and certified in July. Opponents, including labor unions and the governor, have mobilized against it, citing projected losses in funding for K-12 education, higher education, and human services. A June 2026 poll showed 57% opposition. Washington voters have rejected multiple prior income-tax-related measures, including a 2024 capital gains tax repeal effort that failed by a wide margin, reinforcing trader expectations that the repeal will not pass.
Initiative Measure No. 645 (I-645, filed as IP26-645) is a ballot measure scheduled to appear in the statewide general election currently scheduled for November 3, 2026, which would repeal the state's tax on households earning over $1 million a year and prohibit future state and local taxes on income, among other items.
This market will resolve to “Yes” if this ballot measure is approved as a result of the Washington statewide general election currently scheduled for November 3, 2026. Otherwise, this market will resolve to “No.”
If voting on the specified ballot measure does not occur, or the results thereof are not known definitively, by March 31, 2027, this market will resolve to “No”.
Subsequent litigation or any failure to implement the measure will have no impact on the resolution of this market.
This market will resolve based on a consensus of credible reporting. If there is ambiguity, this market will resolve solely based on official information from the State of Washington, including the Washington Secretary of State (https://www.sos.wa.gov/).
This market will resolve to “Yes” if this ballot measure is approved as a result of the Washington statewide general election currently scheduled for November 3, 2026. Otherwise, this market will resolve to “No.”
If voting on the specified ballot measure does not occur, or the results thereof are not known definitively, by March 31, 2027, this market will resolve to “No”.
Subsequent litigation or any failure to implement the measure will have no impact on the resolution of this market.
This market will resolve based on a consensus of credible reporting. If there is ambiguity, this market will resolve solely based on official information from the State of Washington, including the Washington Secretary of State (https://www.sos.wa.gov/).
Market Opened: Sep 17, 2026, 1:18 PM ET
Volume
$60End Date
Nov 3, 2026Market Opened
Sep 17, 2026, 1:18 PM ETResolution Source
https://www.sos.wa.gov/electionsResolver
0x65070BE91...Initiative Measure No. 645 (I-645, filed as IP26-645) is a ballot measure scheduled to appear in the statewide general election currently scheduled for November 3, 2026, which would repeal the state's tax on households earning over $1 million a year and prohibit future state and local taxes on income, among other items.
This market will resolve to “Yes” if this ballot measure is approved as a result of the Washington statewide general election currently scheduled for November 3, 2026. Otherwise, this market will resolve to “No.”
If voting on the specified ballot measure does not occur, or the results thereof are not known definitively, by March 31, 2027, this market will resolve to “No”.
Subsequent litigation or any failure to implement the measure will have no impact on the resolution of this market.
This market will resolve based on a consensus of credible reporting. If there is ambiguity, this market will resolve solely based on official information from the State of Washington, including the Washington Secretary of State (https://www.sos.wa.gov/). Washington voters face Initiative 645 on the November 3, 2026 ballot, which would repeal the 9.9% tax on household income above $1 million enacted by the Legislature and signed by Governor Bob Ferguson in March 2026. The measure, backed by Let’s Go Washington, qualified after more than 500,000 signatures were submitted and certified in July. Opponents, including labor unions and the governor, have mobilized against it, citing projected losses in funding for K-12 education, higher education, and human services. A June 2026 poll showed 57% opposition. Washington voters have rejected multiple prior income-tax-related measures, including a 2024 capital gains tax repeal effort that failed by a wide margin, reinforcing trader expectations that the repeal will not pass.
Initiative Measure No. 645 (I-645, filed as IP26-645) is a ballot measure scheduled to appear in the statewide general election currently scheduled for November 3, 2026, which would repeal the state's tax on households earning over $1 million a year and prohibit future state and local taxes on income, among other items.
This market will resolve to “Yes” if this ballot measure is approved as a result of the Washington statewide general election currently scheduled for November 3, 2026. Otherwise, this market will resolve to “No.”
If voting on the specified ballot measure does not occur, or the results thereof are not known definitively, by March 31, 2027, this market will resolve to “No”.
Subsequent litigation or any failure to implement the measure will have no impact on the resolution of this market.
This market will resolve based on a consensus of credible reporting. If there is ambiguity, this market will resolve solely based on official information from the State of Washington, including the Washington Secretary of State (https://www.sos.wa.gov/).
This market will resolve to “Yes” if this ballot measure is approved as a result of the Washington statewide general election currently scheduled for November 3, 2026. Otherwise, this market will resolve to “No.”
If voting on the specified ballot measure does not occur, or the results thereof are not known definitively, by March 31, 2027, this market will resolve to “No”.
Subsequent litigation or any failure to implement the measure will have no impact on the resolution of this market.
This market will resolve based on a consensus of credible reporting. If there is ambiguity, this market will resolve solely based on official information from the State of Washington, including the Washington Secretary of State (https://www.sos.wa.gov/).
Volume
$60End Date
Nov 3, 2026Market Opened
Sep 17, 2026, 1:18 PM ETResolution Source
https://www.sos.wa.gov/electionsResolver
0x65070BE91...Washington voters face Initiative 645 on the November 3, 2026 ballot, which would repeal the 9.9% tax on household income above $1 million enacted by the Legislature and signed by Governor Bob Ferguson in March 2026. The measure, backed by Let’s Go Washington, qualified after more than 500,000 signatures were submitted and certified in July. Opponents, including labor unions and the governor, have mobilized against it, citing projected losses in funding for K-12 education, higher education, and human services. A June 2026 poll showed 57% opposition. Washington voters have rejected multiple prior income-tax-related measures, including a 2024 capital gains tax repeal effort that failed by a wide margin, reinforcing trader expectations that the repeal will not pass.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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