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In page British Columbia carbon tax:

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In 2016, a similar measure was put on the ballot in the neighboring State of Washington. Washington Initiative 732 would have, like the British Columbia carbon tax, impose a steadily rising tax on carbon emissions, while offsetting the state's sales tax and business tax, while expanding the state's tax credit for low-income families. The ballet initiative did not pass; however, another carbon tax plan, Washington Initiative 1631, has been proposed.[1]