Oregon vs Idaho Taxes
Compare the total tax burden between Oregon (4.75% – 9.9%) and Idaho (5.8% flat). Enter your income to see which state saves you more.
Tax at Different Income Levels
| Income | Oregon Total Tax | Idaho Total Tax | Annual Savings |
|---|---|---|---|
| $75,000 | $18,586 | $17,123 | Save $1,463 |
| $100,000 | $28,186 | $25,986 | Save $2,200 |
| $150,000 | $48,110 | $44,329 | Save $3,782 |
| $200,000 | $67,403 | $61,572 | Save $5,832 |
Based on single filer, standard deduction, 2025 tax year. Includes federal income tax, state income tax, and FICA.
Why the difference
You'd save $2,200/year ($183/month) in Idaho vs Oregon.
Tax structure
Oregon uses progressive brackets up to 9.9%, while Idaho has a flat 5.8% state income tax.
Effective rate at your income
At $100,000, Idaho's effective state rate is 4.9% vs 7.1% in Oregon — a 2.2 percentage point gap.
Tip: In a progressive-bracket state, pre-tax 401(k) and HSA contributions reduce your state tax bill along with federal tax. If you are near a bracket boundary, an additional contribution can drop you into a lower state bracket.
Tip: In a progressive-bracket state, pre-tax 401(k) and HSA contributions reduce your state tax bill along with federal tax. If you are near a bracket boundary, an additional contribution can drop you into a lower state bracket.
Understanding Each State
Oregon
This state uses a progressive income tax system with multiple brackets, similar to the federal system. Only the income within each bracket is taxed at that rate, so your effective state rate is lower than the top bracket. Tax planning strategies include maximizing pre-tax retirement contributions to reduce state-taxable income.
Tip: In a progressive-bracket state, pre-tax 401(k) and HSA contributions reduce your state tax bill along with federal tax. If you are near a bracket boundary, an additional contribution can drop you into a lower state bracket.
Idaho
This state uses a progressive income tax system with multiple brackets, similar to the federal system. Only the income within each bracket is taxed at that rate, so your effective state rate is lower than the top bracket. Tax planning strategies include maximizing pre-tax retirement contributions to reduce state-taxable income.
Tip: In a progressive-bracket state, pre-tax 401(k) and HSA contributions reduce your state tax bill along with federal tax. If you are near a bracket boundary, an additional contribution can drop you into a lower state bracket.
Key Comparison Points
Income tax structure: Oregon has a progressive income tax (4.75% – 9.9%), while Idaho has a flat income tax (5.8% flat).
Beyond income tax: State tax comparisons should also consider property tax rates, sales tax, and cost of living. A state with no income tax may have higher property or sales taxes that offset the savings.
SALT deduction cap: Under OBBBA (2025+), the federal SALT cap is $40,000, phasing out above $500,000 MAGI toward a $10,000 floor. This limits the federal tax benefit of living in a high-tax state, so the gross state tax difference remains close to the net difference for most earners — especially high earners inside the phaseout.
Frequently asked questions
Is it cheaper to live in Oregon or Idaho?
Based on income tax alone, Idaho has a lower tax burden. At $100K income, you'd save $2,200 annually in Idaho compared to Oregon. However, total cost of living also depends on property taxes, sales taxes, and housing costs.
How much would I save moving from Oregon to Idaho?
A single filer earning $100,000 would save approximately $2,200 per year in total taxes by living in Idaho instead of Oregon. At $150,000 income, the savings change to $3,782 per year.
What is the income tax rate in Oregon?
Oregon has a progressive income tax with rates of 4.75% – 9.9%.
What is the income tax rate in Idaho?
Idaho has a flat income tax with rates of 5.8% flat.