A Montana LLC pays no federal entity-level tax and passes profit through to owners, who pay Montana personal income tax up to 5.9%. Montana charges no state sales tax. The IRS default is disregarded-entity treatment for single-member LLCs and partnership treatment for multi-member LLCs, with an optional S-corp election once net income clears $40,000-$60,000. This page covers federal treatment, Montana state tax, self-employment tax, non-resident filings, and BOI.
A Montana LLC is a pass-through entity by default: profit flows to the owners and is taxed on their personal returns at Montana rates up to 5.9%, with no federal entity-level tax. A single-member LLC is a disregarded entity and a multi-member LLC is a partnership. Montana adds no franchise tax on LLC income and no state sales tax. An LLC elects S-corporation or C-corporation treatment by filing IRS Form 2553 or 8832 when that lowers total tax. The default pass-through structure is the starting point for most Montana LLCs. Montana income tax reaches the top 5.9% rate on higher personal income, and lower brackets apply below that. The state tax attaches to the owner, not the entity, so the LLC itself writes no state income tax check under the default treatment.
A single-member Montana LLC is a disregarded entity taxed on Schedule C of the owner's personal 1040. A multi-member Montana LLC is a partnership that files Form 1065 and issues a Schedule K-1 to each member. No federal entity-level tax applies in either case. This is the IRS default with no election required. Profit passes through to the owners and is taxed once, at personal rates, rather than at the entity level and again on distribution. The default holds until the LLC files Form 2553 for S-corp treatment or Form 8832 for C-corp treatment. A newly formed Montana LLC needs no election to start operating; the disregarded-entity or partnership status applies automatically. Owners revisit the election once profit grows enough to make the self-employment tax savings worth the added payroll compliance.
Yes. Montana levies personal income tax up to 5.9% on profit that passes through to LLC owners. There is no separate Montana entity-level income tax on a default pass-through LLC. Members report their share of Montana-sourced income on their Montana personal returns. A non-resident member with Montana-sourced income files a Montana non-resident return for that share. Montana charges no franchise tax on LLC income, so the 5.9% personal rate is the primary state-level charge. Income earned outside Montana by a non-resident member is not Montana-sourced, so a founder based elsewhere with no Montana customers has no Montana income tax on that portion. The sourcing rules decide what share the 5.9% rate reaches.
No. Montana is one of five US states with no statewide sales or use tax. A Montana LLC selling goods or services in-state collects no state sales tax at the point of sale. A small number of tourist towns levy local resort-area taxes, but no statewide sales tax applies. This absence lowers the compliance burden for retail and e-commerce sellers based in Montana, though income tax up to 5.9% still applies to profit. Sellers shipping into other states still handle those states' economic nexus and sales tax rules. Montana joins Oregon, New Hampshire, Delaware, and Alaska as the five states with no statewide sales tax. A Montana LLC registers for no state sales tax permit and files no state sales tax return.
An S-corp election becomes worthwhile once net business income clears $40,000-$60,000 a year. An LLC elects it by filing IRS Form 2553, which splits income into a reasonable salary and distributions. The distribution portion escapes the 15.3% self-employment tax, producing the savings. Below that income range, the payroll and compliance cost of running an S-corp outweighs the tax saved. An S-corp Montana LLC files Form 1120-S and runs payroll for the owner-employee. The election changes federal treatment without changing the Montana 5.9% personal rate on pass-through income.
Default LLC owners pay 15.3% self-employment tax on net business income: 12.4% Social Security up to $168,600 plus 2.9% Medicare with no cap. This is on top of federal and Montana income tax. Electing S-corp treatment via Form 2553 splits profit into a reasonable salary and distributions, cutting the 15.3% on the distribution portion once profit clears $40,000-$60,000. The salary portion still carries payroll tax. This is the main lever an established Montana LLC uses to lower its total tax bill. The salary must be reasonable for the work performed, because the IRS challenges token salaries paired with large distributions. A Montana LLC owner weighs the payroll and filing cost of an S-corp against the self-employment tax saved before electing.
A non-resident owner's US tax turns on Effectively Connected Income (ECI). An LLC with no US ECI files a Form 5472 information return but owes no US income tax; an LLC with US ECI is subject to US income tax on that income. Non-US residents who own a US LLC file Form 5472 with a pro-forma Form 1120 each year for a foreign-owned single-member LLC, or Form 1065 with K-1s for a multi-member LLC. An ITIN is needed for personal tax filing where US income tax applies. Anonymousllc.co partners with US tax preparers familiar with non-resident filings.
Form 5472 is an information return required for any US disregarded entity with 25% or more foreign ownership. A foreign-owned single-member Montana LLC files it annually alongside a pro-forma Form 1120. The form reports transactions between the LLC and its foreign owner or related parties, including capital contributions and distributions. It is an information filing, not an income tax return, but the penalty for missing it is steep at $25,000. A foreign-owned Montana LLC files it even in a year with no revenue, because the reporting duty attaches to ownership, not to profit. Most non-resident-owned single-member Montana LLCs must file it even when they owe no US income tax. The LLC uses its EIN, priced at $99 on its own, to file.
A multi-member Montana LLC files federal Form 1065 and issues a Schedule K-1 to each member. Members report their K-1 share on personal returns, taxed at Montana rates up to 5.9%. There is no entity-level federal income tax on the default partnership. Electing S-corp status instead requires Form 2553 and shifts the entity to Form 1120-S with payroll for owner-employees. A non-resident member who owes US personal income tax files with an ITIN, which Anonymousllc.co obtains for $299.
A US-formed Montana LLC files no BOI report under the March 21, 2025 FinCEN interim final rule, which exempts domestic reporting companies. The exemption covers every LLC organized inside the United States. Foreign reporting companies - LLCs formed outside the US and then registered here - remain obligated to file beneficial ownership information with FinCEN. Most Montana LLCs are domestic and exempt. This federal reporting rule is separate from Montana's own income tax and public owner-disclosure requirements. A Montana LLC owned by a non-US person still files Form 5472 with the IRS even while it is exempt from FinCEN BOI reporting, because the two rules serve different agencies. The BOI exemption does not change any income tax obligation.
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