Oregon vs Idaho · deep dive

State Income Tax: Oregon vs Idaho.

The two states could not be more different here: Oregon taxes income with a graduated structure that reaches a top marginal rate near 9.9 percent, while Idaho applies a single flat rate to income above its standard deduction. This page explains how each system actually applies to wages and retirement income, with the current rates cited from the official state agencies.

As of November 1, 2026 · tax year 2026 rates.

Rates and deductions change with state law. The figures below are the current 2026 structures from the Oregon Department of Revenue and the Idaho State Tax Commission; confirm your personal situation with the agencies or a tax professional before making a move decision.

The two systems

Progressive on one side, flat on the other.

Oregon · no sales tax

Progressive brackets, top rate 9.9%.

Oregon's individual income tax uses four graduated brackets for tax year 2026. For single filers: 4.75 percent on taxable income up to $4,550, 6.75 percent on the next band to $11,400, 8.75 percent to $125,000, and 9.9 percent above $125,000. Married filing jointly thresholds are doubled, with the 9.9 percent rate starting above $250,000. Higher income means a higher rate on the top dollars only, not on the whole paycheck.

Oregon has no state or local sales tax, which is the flip side of the income tax: the state funds services through income rather than consumption.

Oregon Department of Revenue: individual income tax

Idaho · 6% sales tax

One flat rate, 5.3% for 2026.

Idaho adopted a flat income tax in 2023 at 5.8 percent, then cut the rate to 5.3 percent effective January 1, 2025, as it stands for tax year 2026. The rate applies to Idaho taxable income above the standard deduction, so the first $4,811 of income for single filers and $9,622 for married filing jointly is effectively untaxed, and every bracket above that pays the same 5.3 percent.

Idaho charges a 6 percent state sales tax on most goods, with some essentials exempt by law, which offsets part of the income tax advantage for households that spend heavily on taxable purchases.

Idaho State Tax Commission: rate schedule

Wages & retirement income

How each state treats the money you actually live on.

Wages and salaries

How your paycheck is taxed.

Oregon

Wages are taxed through the graduated brackets, so the marginal rate climbs with income. State withholdings are set each year by the Oregon Department of Revenue.

Idaho

Wages are taxed at the single 5.3 percent rate above the standard deduction, the same rate for a first job and a six-figure salary. Idaho 2026 withholding guidance uses the same flat rate.

Pensions, 401(k)s and IRAs

Withdrawals count as income in both states.

Oregon

Most pension, 401(k), 403(b), and traditional IRA withdrawals are taxable, because Oregon starts from federal taxable income. Oregon offers a retirement income credit for qualifying filers aged 62 and older with income under certain limits; it equals 9 percent of qualifying retirement income and is scheduled to sunset for tax years beginning on or after January 1, 2032.

Idaho

Pension and retirement account withdrawals are generally taxable in Idaho at the flat rate, with no broad retirement-income exclusion for private pensions. Some public-service and federal pensions have specific rules, so confirm the details that apply to your own plan.

Social Security

A pleasant surprise in both states.

Oregon

Oregon does not tax Social Security benefits. Under state law, benefits included in federal gross income are subtracted from Oregon taxable income with no income limit, for every filer.

Idaho

Idaho also does not tax Social Security benefits at any income level. Residents claim the exemption on their Idaho return, attaching the state's Form 39R.

Federal rules can still make part of your benefit taxable at the federal level in both states. The state treatment alone is what differs from many other states, and here the two states agree: Social Security is exempt.

The honest takeaway

Which state wins depends on your income and spending.

High-wage households usually owe noticeably less income tax in Idaho because of the flat 5.3 percent rate. Households with moderate incomes in Oregon often pay a smaller effective income tax rate thanks to the low brackets and can pocket the savings of having no sales tax. Retirees gain little from the income tax gap on Social Security since both states exempt it, but pension-heavy retirees see a bigger Idaho advantage.

When Paul works with relocating families, the tax math is part of the plan, but never the whole plan: property taxes, insurance, utilities, and the price of the home itself move the budget just as much. Run your actual numbers with a tax professional and your lender before you commit.

Property taxes: Oregon vs Idaho Cost of living deep dive

Official sources

Tax structures change by legislative session. Always confirm current-year rates and deductions with the agencies before making a decision this big.

Keep comparing

The rest of the Oregon vs Idaho deep dives.

Cost of living: Oregon vs Idaho

The category-by-category budget comparison.

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Rain and green, or sun and sage.

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Commute & travel

Freeways, transit, airports, and the drive between.

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Back to the full Oregon vs Idaho comparison

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