Idaho
Taxes and business formation • USA 2025–2026
TL;DR
Idaho at a glance — 2026 figures
State filing fees and tax position for individuals and companies registered in Idaho.
| Parameter | Value |
|---|---|
| Personal income tax | See the income tax section below |
| LLC formation fee | $100.00 |
| LLC annual report fee | $0.00 |
| LLC annual report deadline | Annually, on the last day of the registration-anniversary month |
| LLC dissolution fee | $0.00 |
| Corporation formation fee | $100.00 |
| Corporation annual report fee | $0.00 |
State filing fees are set by the Secretary of State and change without notice — the official source is linked in each section below. Federal figures for tax year 2026 are on the 2026 tax cheat sheet.
Updated: August 2026
LLC in Idaho
Corporation in Idaho
Tax system of Idaho
Income Tax
Starting in 2023, Idaho introduced a single flat personal income tax rate of 5.8%. The tax applies to wages, business income, capital gains, and rental income. The state allows standard deductions and tax credits for children, education, and medical expenses. Retirees can take advantage of certain benefits when it comes to the taxation of pensions and Social Security.
Sales Tax
Idaho's base sales tax rate is 6%. Local jurisdictions are not authorized to add surcharges, so the rate is uniform throughout the state. The tax applies to most retail sales, commercial real estate rentals, and a range of services (such as entertainment and hotels). Groceries are taxed at the standard rate, but buyers can claim a tax credit that offsets this. Determining the taxable base and the correct sales tax rate can be quite complex and requires a professional approach and knowledge of state law. Our firm provides services for obtaining a Sales Tax Certificate and for preparing and filing the Sales and Use Tax Return. We advise business owners on registration, calculation, and reporting.
Property Tax
Property tax in Idaho is levied at the local county and municipal level and varies depending on location and property use. The average effective rate is about 0.63% of market value, below the national average. The state also offers a homeowner's exemption, which reduces the taxable value of a primary residence by up to 50% (but no more than the established limit).
Business Taxes
C-corporations are subject to corporate income tax at a rate of 5.8% — the same as the individual rate. S-corporations and LLCs receive pass-through treatment, with profits taxed at the owner level. An Annual Report is mandatory for all companies registered in Idaho. The filing deadline is each year, by the last day of the month in which the company was registered. Businesses are also required to file tangible personal property returns if property value exceeds $250,000 (the 2025 limit). Our firm provides services for LLC and corporation registration in Idaho, monitoring Annual Report filing deadlines, and calculating and filing corporate taxes.
Excise Taxes
The state levies excise taxes on alcohol, tobacco, and gasoline, as well as on car rentals, hotel services, and an annual registration fee for commercial vehicles.
Favorable Tax Conditions
• The absence of a local sales tax makes the rate predictable and stable; • One of the lowest property tax rates in the U.S.; • No franchise tax or minimum corporate tax.
Compared to Other States
• Income tax is lower than in California, Oregon, and New York, but higher than in Florida or Texas; • Sales tax is lower than in states with heavy local surcharges (for example, Arizona or New Mexico); • Property tax is lower than in most West Coast states; • No estate tax — an advantage compared to Connecticut or Kentucky; • No franchise tax, unlike in Delaware, California, or Texas.
Frequently asked questions
Does Idaho have a personal income tax?+
Yes. Idaho levies a personal income tax on residents. The current rates and brackets are set out in the income tax section on this page, with a link to the state tax authority — rates are revised by the legislature, so always check the official source before filing.
How much does it cost to register an LLC in Idaho?+
The state filing fee in Idaho is $100.00. On top of that you need a registered agent with a physical address in the state, and FinTaxes charges from $299 for the formation service itself.
When is the annual report due for a Idaho LLC?+
The Idaho annual report fee is $0.00, due Annually, on the last day of the registration-anniversary month. Missing it typically triggers a late penalty and, if left unresolved, administrative dissolution of the company.
Do I need to live in Idaho to open an LLC there?+
No. You do not need to live in Idaho — or in the United States at all — to own an LLC registered there. Non-residents can form and own a US LLC; what the state requires is a registered agent with a physical in-state address. Your own tax residency is a separate question and decides which returns you file.
Can FinTaxes file my Idaho state return remotely?+
Yes. FinTaxes prepares and e-files federal and Idaho state returns entirely remotely, for clients anywhere in the US or abroad, as an Authorized IRS e-file Provider.
Starting a business in Idaho?
I'll help you form an LLC, navigate taxes, and avoid overpaying