Data Notice: Tax rates, brackets, and exemptions cited in “Taxes in Idaho: State Tax Guide 2026” are projected 2026 figures based on enacted Idaho legislation and IRS inflation adjustments. The Idaho legislature may enact mid-year changes. Verify with the Idaho Department of Revenue before filing. [taxes-idaho-2026]

Taxes in Idaho: State Tax Guide 2026

The content in this taxes in idaho: state tax guide 2026 guide is educational and informational. It should not be relied upon as tax, legal, or financial advice. Individual tax situations require personalized analysis by a qualified professional. Consult a CPA or enrolled agent for your specific needs.

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