Taxes in Idaho: State Tax Guide 2026
Data Notice: Figures, rates, and statistics cited in this article are based on the most recent available data at time of writing and may reflect projections or prior-year figures. Always verify current numbers with official sources before making financial, medical, or educational decisions.
Taxes in Idaho: State Tax Guide 2026
Tax information is for educational purposes only and does not constitute tax advice. Consult a licensed tax professional for your specific situation.
Idaho has undergone significant tax reform in recent years, moving to a flat income tax rate of 5.80% as of 2023. Combined with moderate sales and property taxes, Idaho offers a relatively balanced tax environment. The state’s growing population — driven by migration from higher-tax states — reflects its competitive tax position in the Mountain West.
Idaho Income Tax Rates (2026)
Idaho adopted a flat income tax rate effective for tax year 2023:
| Tax Rate | Taxable Income Range |
|---|---|
| 5.80% | All taxable income |
The flat rate applies equally to all filing statuses. Prior to 2023, Idaho had a progressive system with rates up to 6.00%.
Idaho conforms closely to the federal Internal Revenue Code, which simplifies filing for most residents.
Idaho Standard Deduction (2026)
Idaho conforms to the federal standard deduction:
| Filing Status | Amount |
|---|---|
| Single | ~$15,000 |
| Married Filing Jointly | ~$30,000 |
| Head of Household | ~$22,500 |
These amounts reflect projected 2026 inflation adjustments to the federal standard deduction, which Idaho adopts.
Notable Idaho Tax Credits
- Grocery Credit: ~$120 per person (all ages) to offset sales tax on groceries — one of Idaho’s most widely used credits
- Child Tax Credit: Idaho does not have a separate state child tax credit, but the grocery credit applies to dependents
- Idaho Capital Gains Deduction: Up to ~60% of qualifying Idaho-source capital gains can be deducted (primarily for sales of Idaho real property or Idaho businesses)
- Investment Tax Credit: 3.75% credit for new investment in qualifying depreciable property
- Small Employer New Jobs Credit: Credit for businesses creating new jobs at wages above ~$17.50/hour
Sales Tax
| Component | Rate |
|---|---|
| State base rate | 6.00% |
| Average combined (state + local) | ~6.02% |
| Maximum local surcharge | 3.00% (resort cities) |
Idaho has a relatively uniform sales tax with limited local additions. Resort cities like Sun Valley, McCall, and Ketchum can impose additional local option taxes (typically 2–3%) to fund resort-area infrastructure.
Exempt from sales tax: Prescription medications. Groceries are taxable in Idaho, but the grocery credit (~$120/person) is designed to offset this cost.
Property Tax
| Metric | Amount |
|---|---|
| Average effective rate | ~0.63% |
| National average | 0.99% |
Idaho property taxes are below the national average. The state imposes a 3% cap on annual increases in non-exempt property values for assessment purposes.
Exemptions
- Homeowner’s exemption: 50% of the value of improvements, up to ~$125,000 of assessed value, for owner-occupied primary residences
- Circuit breaker program: Property tax reduction for qualifying homeowners aged 65+, disabled, widowed, or with income below ~$33,870 — can reduce property taxes to as low as $0
- Veterans exemption: Qualifying disabled veterans receive additional property tax reductions
Example: A home valued at $400,000 with a $125,000 homeowner’s exemption has a taxable value of $275,000. At the ~0.63% effective rate, annual property tax is approximately ~$1,733.
How Idaho Compares to National Averages
| Tax Type | Idaho | National Average |
|---|---|---|
| Top income tax rate | 5.80% | ~5.0% |
| Effective rate (~$75K single) | ~4.8% | ~3.5% |
| Sales tax (combined avg) | ~6.02% | 6.6% |
| Property tax (effective) | ~0.63% | 0.99% |
| Overall tax burden rank | Moderate | — |
Who Benefits from Living in Idaho
Idaho may work well for:
- Homeowners — Low property tax rates with a generous homeowner’s exemption and the circuit breaker program for seniors
- Retirees on modest income — The circuit breaker program can eliminate property taxes entirely, and Social Security is tax-free
- Small business owners — Flat income tax, capital gains deduction for Idaho-source gains, and investment tax credits
- Families — The grocery credit applies per person including children, providing meaningful relief
- Migrants from high-tax states — 5.80% flat rate is significantly lower than rates in California (13.30%), Oregon (9.90%), or Washington State (no income tax but high other taxes)
Idaho may be costly for:
- Grocery shoppers — Idaho is one of a handful of states that tax groceries (though the credit partially offsets this)
- Low-income earners — The flat tax means everyone pays 5.80%, with no lower brackets for modest incomes
- Resort-area residents — Local sales taxes in Sun Valley and similar areas add 2–3% to purchases
- High-income earners with non-Idaho capital gains — The 60% capital gains deduction only applies to Idaho-source gains
Idaho-Specific Considerations
- No tax on Social Security benefits — Idaho fully exempts Social Security income from state tax
- Retirement income — Pensions and other retirement income are fully taxable (no general retirement exclusion beyond Social Security)
- Idaho-source capital gains deduction — Up to 60% of qualifying gains from the sale of Idaho real property or Idaho businesses can be deducted
- Federal conformity — Idaho closely conforms to federal tax law, simplifying state filing
- No state estate or inheritance tax — Idaho does not impose either tax
- Rapid growth considerations — Property values are rising quickly in the Boise metro and other areas, which may increase property tax bills despite the 3% assessment cap
Key Takeaways
- Idaho’s flat 5.80% income tax rate is competitive in the region and simplifies tax planning
- The grocery credit of ~$120 per person helps offset Idaho’s tax on groceries
- Property taxes are well below the national average, with generous exemptions for homeowners and seniors
- Sales tax is moderate at 6.00% statewide, with higher rates only in resort communities
- No state tax on Social Security benefits and no estate or inheritance tax
- The Idaho-source capital gains deduction (up to 60%) is valuable for residents selling Idaho real property or businesses
Next Steps
- See how Idaho compares at State Income Tax Comparison: All 50 States Ranked
- Calculate your federal bracket with the Tax Bracket Calculator 2026
- Explore deductions available to you — Tax Deductions You’re Probably Missing (Itemized vs Standard)
- Find an Idaho CPA — Find a CPA Near You
- Consider tax-efficient strategies — Tax Planning Consultation