Oregon brokerage account growth calculator

What a taxable index-fund account is actually worth after expense-ratio drag and after Oregon takes its share of the gain — which, in most states, is not at the federal preferential rate.

Oregon taxes your gains as ordinary income

There is no state equivalent of the federal preferential rate here — a long-term gain is charged at Oregon's normal income brackets, exactly like wages. This is the common case, and it surprises people who assume the federal 15% carries over. Long-term capital gains are taxed as ordinary income at the graduated rates above, up to 9.9% — one of the highest state rates on capital gains in the country, and the federal preferential long-term rate does NOT carry over. Oregon taxable income begins from federal AGI, which already includes net capital gain, and there is no preferential rate, no holding-period discount, and no general exclusion. A Multnomah County resident adds up to 1% SHS and 3% PFA on top, so a large gain can face a combined marginal rate near 14%. The one narrow exception is not a general break: ORS 316.045 provides a reduced farm liquidation long-term capital gain rate for qualifying dispositions of farming business property, which reaches a specific transaction type and not portfolio gains.