Prediction Markets
in Oregon
Oregon is fully open for prediction markets (all platforms available, no enforcement actions) but has the second-highest state income tax rate in the US at up to 9.9%. Combined with federal rates, Oregon high-earners can face total marginal rates exceeding 47% on prediction market profits. Tax planning is essential for active Oregon traders. Sports betting launched in 2023 via private mobile operators after years of Lottery-only wagering.
Which platforms work in Oregon?
All categories available in Oregon. No state-level restrictions.
Polymarket QCEX available in Oregon. Apply via the national waitlist.
Both Mana and Sweepcash available in Oregon.
CFTC no-action letter. US politics only, $850 cap. Available in OR.
All prediction market contracts available in OR.
Oregon's 9.9% top rate: the second-highest in the US
Oregon has the 2nd-highest state income tax in the US at 9.9% on income above $125,000 (single). Only California (13.3%) is higher. For prediction market traders in the top bracket, combining 37% federal + 9.9% Oregon = 46.9% effective marginal rate.
Oregon also has no sales tax, which partially offsets income tax burdens for consumers: but for investment income and trading profits, the high income tax rate is unavoidable. Kalshi issues a 1099-MISC; report on Oregon Form OR-40 as ordinary income.
Oregon vs the West Coast
Washington
Open status, no state income tax on wages or investment income. Manifold restricted but Kalshi fully available. Huge tax advantage over Oregon.
Neighbor stateCalifornia
Caution status, 13.3% top rate: even higher than Oregon. Polymarket QCEX available but both states have punishing income tax for traders.
CautionNevada
No income tax but Polymarket restricted. Sports betting fully legal and established.