An Ohio LLC pays Ohio personal income tax up to 3.5% on member profit and a Commercial Activity Tax once gross receipts exceed $150,000. The IRS default is pass-through: a single-member LLC is a disregarded entity, a multi-member LLC is a partnership. An S-corporation election on Form 2553 reduces self-employment tax once net income clears the $40,000-$60,000 range. Non-resident owners file Form 5472 with a pro-forma 1120 when the LLC is a foreign-owned disregarded entity.
By default the IRS treats a single-member Ohio LLC as a disregarded entity, taxed on Schedule C of the owner's personal 1040, and a multi-member Ohio LLC as a partnership that files Form 1065 and issues K-1s. There is no federal entity-level tax in either case. Profit passes through to the owners, who report it on their personal returns and pay tax at their individual rates. The LLC itself files an information return, not an income tax return, unless it elects corporate treatment. This pass-through default is the same in Ohio as in every US state; the difference is the state-level tax layered on top.
An Ohio LLC pays Ohio personal income tax up to 3.5% on member profit and the Commercial Activity Tax once gross receipts exceed $150,000. Ohio has no separate LLC franchise tax in the Delaware sense. Because the LLC is a pass-through, the income tax lands on the members' personal Ohio returns rather than on the entity. The Commercial Activity Tax is a gross-receipts tax on the business itself above the $150,000 threshold. A member reports the LLC's profit share against Ohio's graduated personal income tax, which tops out at 3.5%.
Ohio's Commercial Activity Tax applies once an Ohio LLC's gross receipts exceed $150,000. Below that threshold the LLC owes no CAT. The tax is measured on gross receipts, not net profit. The CAT is separate from the members' personal income tax, which still applies to their share of profit at up to 3.5%. A small Ohio LLC under the receipts threshold pays only the personal income tax on profit. A larger Ohio LLC pays both the CAT on receipts and the members' personal income tax on distributed profit. Anonymousllc.co partners with US tax preparers who handle both filings. Gross receipts count total revenue before expenses, so a high-revenue, low-margin Ohio LLC can cross the $150,000 line while netting little profit. That is the trap to plan for: the CAT is measured on the top line, not the bottom line. A tax preparer maps the LLC's revenue against the threshold each year and files the CAT return when receipts require it.
An Ohio LLC electing S-corporation treatment on IRS Form 2553 becomes worthwhile once net income clears the $40,000-$60,000 range. Below that, the payroll compliance cost outweighs the self-employment tax savings. The S-corp election splits income into a reasonable salary and a distribution. Self-employment tax of 15.3% applies to the salary portion but not the distribution, which is where the savings come from. The election adds payroll filings and a reasonable-salary requirement. Ohio recognizes the federal S-corp election, so the profit still passes through to the members' personal Ohio returns.
A default Ohio LLC owner pays 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 applies to disregarded-entity and partnership members on their active income. The S-corporation election on Form 2553 reduces this by shifting part of the income to salary and part to distribution, since only the salary carries self-employment tax. The election adds payroll compliance. This trade-off turns positive once net income clears the $40,000-$60,000 range, which is why smaller Ohio LLCs stay with the default pass-through.
A multi-member Ohio LLC defaults to partnership treatment. It files Form 1065 and issues a K-1 to each member, and there is no federal entity-level tax. Each member reports their K-1 share on their personal 1040. At the state level, each member reports that share against Ohio's personal income tax of up to 3.5%. The Commercial Activity Tax still applies to the LLC's gross receipts above $150,000 regardless of the number of members. A multi-member LLC can also elect S-corp or C-corp treatment when that lowers total tax.
A non-US resident who owns an Ohio LLC files Form 5472 with a pro-forma Form 1120 each year when the LLC is a foreign-owned disregarded entity, and a Form 1065 with K-1s when it is multi-member. US income tax depends on Effectively Connected Income. An LLC with no US ECI files the Form 5472 information return but owes no US income tax on foreign-earned profit. An ITIN is needed when the owner has a personal US filing obligation. Anonymousllc.co partners with US tax preparers familiar with non-resident Ohio LLC filings, and offers ITIN service at $299.
Form 5472 is an IRS information return required for any US disregarded entity with 25% or more foreign ownership. Most non-resident-owned single-member Ohio LLCs must file it annually alongside a pro-forma Form 1120. The form reports transactions between the LLC and its foreign owner. It is an information filing, not an income tax return, and carries a $25,000 penalty for non-filing. A US-resident-owned Ohio LLC does not file Form 5472. Anonymousllc.co flags the requirement at formation for foreign-owned LLCs and connects owners with preparers who file it.
No. State of formation does not change Ohio tax on Ohio-source income. A Wyoming or New Mexico LLC that operates in Ohio and foreign-qualifies still owes Ohio income tax on its Ohio-source profit and the CAT above $150,000. The anonymous-state route is a privacy structure, not a tax shelter. Its value is keeping members and managers off the public record while the LLC operates in Ohio. Ohio tax follows where the income is earned and where nexus exists, not where the entity was formed. Anonymousllc.co uses the Wyoming anonymous LLC for privacy and pairs it with accurate Ohio tax filing. Where the anonymous route does help on tax is for a location-independent business with no Ohio nexus at all: that owner forms directly in Wyoming or New Mexico and owes no Ohio tax because the income is not Ohio-source. The moment the business has Ohio customers, staff, or property, Ohio nexus attaches and the Ohio tax applies regardless of the formation state.
Under the March 21, 2025 FinCEN interim final rule, domestic reporting companies are exempt from beneficial ownership reporting. An Ohio LLC formed in the United States is a domestic reporting company and currently files nothing. Foreign reporting companies, meaning LLCs formed outside the US, remain obligated. Most Ohio LLCs are domestic and currently exempt under the interim final rule. Anonymousllc.co offers BOI filing at $150 per report for the foreign entities that still need it, and monitors FinCEN rule changes across the BOI cluster. BOI reporting is separate from Ohio state filings and from income tax; it is a federal FinCEN requirement about who ultimately owns the entity. A domestic Ohio LLC that adds a foreign parent or restructures should re-check its status against the current rule. Anonymousllc.co tracks the FinCEN guidance and flags any change that would bring a previously exempt Ohio LLC back into scope.
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