Carbon Tax Swap Calculator

A nonpartisan way to estimate how Carbon Washington's proposal would impact you

Carbon Washington is proposing Initiative 732, which would impose a carbon tax and use the revenues to reduce sales tax and business taxes, and to fund a Working Family Rebate for low-income households.


Want to estimate how your household or business would be affected? Use one of our calculators to estimate the financial impact of the proposal on you. Answer a few questions and we'll crunch the numbers for you.

Household calculator


For households, Carbon Washington's proposal includes a reduced sales tax, the Working Familes Rebate, and a tax on fossil fuels for driving, flying, and powering and heating your home. Use our calculator to estimate how this would impact you.


How will this impact my household?

Business calculator


For businesses, Carbon Washington's proposal includes a reduced sales tax, the elimination of the B&O Manufacturing Tax a tax on driving and flying for business as well as powering and heating your business. Use our calculator to estimate how this would impact you.


How will this affect my business?

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Nonpartisan estimates

We don’t want to sway you one way or the other. Our goal is to provide an unbiased estimate to inform your voting decision.

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Transparent methods

Want to know how we reached our results? Check out the How'd you get this number? icons or read our methodology report.

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User feedback

Have any feedback about the website? Want to suggest a feature? Email us at carbon@cs.washington.edu.

Your privacy is important to us. No information that you enter into this website is saved anywhere. (All the calculations are done in a Javascript program that runs in your browser, not on a server.) We use a basic Google Analytics setup to track how many visitors we get to the website.