Idaho taxes personal income (Flat 5.3%), and imposes no separate entity-level income tax on LLCs. A Wyoming holding company does not erase Idaho's own entity-level obligations on a Idaho subsidiary, but it can still add liability separation and keep the parent's ownership off Idaho's public LLC filings.
Idaho has no franchise tax and no gross receipts tax on standard LLCs. A default (disregarded-entity or partnership-taxed) LLC owes no entity-level state tax at all. Idaho does levy a corporate income tax, but that only applies to LLCs that elect corporate treatment. The one real Idaho-specific entity-level cost is narrower and easy to miss: S-corporations must pay the Permanent Building Fund (PBF) tax — a flat $10 per shareholder for whom the S-corp pays Idaho income tax, filed alongside Form 41S. It's small, but it's a real, separate line item tied specifically to the S-Corp election.
The general federal tax treatment of holding companies (consolidated filings, dividends-received deductions, and the like) is set at the federal level and does not change state to state — what changes is the entity-level tax Idaho itself charges an LLC or corporation formed or registered there.
Idaho does not impose a franchise tax or a stand-alone entity-level income tax on pass-through LLCs. When the holding company and its subsidiaries are taxed as pass-throughs, profit moves from the operating subsidiaries up through the parent and onto the members' returns, where Idaho applies its flat 5.3% individual income tax. There is no second layer of Idaho tax for the act of consolidating ownership in a parent LLC. The only mandatory recurring Secretary of State cost per entity is the annual report, and that report is free.
Idaho taxes C-corporations at a flat 5.3% on Idaho taxable income (tax years beginning on or after January 1, 2025), with a $20 minimum tax that applies even to a corporation showing little or no income. The return is Form 41, due the 15th day of the fourth month after year-end. Idaho has no separate franchise tax and no annual report fee, so the corporate income tax and the free annual report are the only recurring state obligations.
Idaho LLCs must file Annual Report with Idaho Secretary of State (SOSBiz), due Last day of the LLC's anniversary month, every year, with a fee of $0 online / $20 by mail.
Idaho charges no monetary late fee, but a 60-day cure period follows the Secretary of State's delinquency notice before the LLC faces administrative dissolution (or termination of registration for a foreign LLC).
A common structure pairs a Wyoming LLC as the parent with a Idaho entity handling operations, holding property, or running a Idaho-facing business.
The Idaho entity still owes whatever Idaho itself charges — no separate entity-level tax if it stays taxed as a pass-through LLC — regardless of where its parent is formed; pairing it with a Wyoming LLC does not change the Idaho subsidiary's own filing or tax obligations. What the Wyoming parent adds is liability separation, and the Wyoming company's own ownership stays out of Idaho's public LLC filings.
For more on the general structure, see the Wyoming holding company guide and how to set one up.
Tax agency reference: Idaho State Tax Commission (tax.idaho.gov).
Note: Tax rates, fees, and thresholds shown here reflect state tax research last verified July 2026; reconfirm current figures directly at tax.idaho.gov before relying on them for a specific filing.
Idaho's tax treatment of a holding structure comes down to its personal income tax (Flat 5.3%) and the absence of a separate entity-level LLC tax. If you have questions about structuring a Wyoming-Idaho holding arrangement, reach out through our contact form.
If you have questions about structuring a Wyoming-Idaho holding arrangement, reach out through our contact form or call +1 (307) 683-0983 to speak with one of our experienced Business Success Advisors. Visit our homepage and blog for more.