According to IRS data, 9 out of 10 Washington business owners would pay no state income tax under I-1098. Of those Washington tax filers claiming net business income from a sole proprietorship, S-corporation and/or partnership, only 10.6% show an AGI of more than $200,000. Since 85% of high-income returns are filed jointly, a substantial proportion of those tax filers would be exempt from paying state income tax on AGI up to $400,000 per year.
Background: A tax filer claiming business income on their personal tax return would only be taxed if his/her Adjusted Gross Income (AGI), net of allowable business expenses/losses under IRS rules, exceeds $200,000 for single filers or $400,000 for joint filers – and then only on the amount exceeding that income threshold.
According to IRS data from 2007, Washington residents collectively filed an estimated 520,565 tax returns that reported net business income from sole proprietorships, S-corporations and/or partnerships. Of those, nearly 90% showed an Adjusted Gross Income (AGI) of less than $200,000. All of these business owners would be completely exempt from the income tax proposed by Initiative 1098. Since 85% of high-income returns are filed jointly, a substantial proportion of the remaining tax filers would be exempt from paying state income tax.
Most business owners will also see a tax cut. According to analysis by the Department of Revenue, I-1098 would exempt 81% of Washington businesses from B&O tax payments, and reduce B&O tax payments for another 12%. Every business that owns property would also see a 20% cut in the state portion of their property taxes.
From EOI’s fact sheet I-1098: Will small business owners pay state income tax?
Looking for more information about Initiative 1098? Visit the Economic Opportunity Institute website.
- Leave a Reply
More To Read
August 10, 2026
Buy, Borrow, Die: How tax codes gut community well-being to line pockets of the wealthy
We are long overdue for a tax code that requires the ultra-wealthy to pay what they owe.
July 30, 2026
What the Millionaires Tax would mean for Washington
We’re not paying the benefits of economic growth forward like we used to. The Millionaires Tax can change that.
July 9, 2026
How will the Millionaires Tax impact us?
The Millionaires Tax adds critical revenue to our state budget and starts to rebalance our upside-down tax code.