US Company Setup from Europe: Entity, State and Tax Considerations

Test the assumptions that could reverse your US setup plan

European-based founders should compare a US LLC, a US corporation and direct registration of an existing European company against four connected facts: the legal owner, the US operating footprint, federal tax classification and residence-country treatment. Select the entity and state only when those facts support the same route. This worksheet turns a proposed answer into a testable filing decision.

Use one row for every assumption in your plan. Record the evidence beside the conclusion, including who checked it and when. A missing answer means the relevant decision remains open; paying a formation invoice does not resolve it.

The filing instruction should describe one business consistently across the ownership, state and tax records. If the intended owner changes from an individual to a European parent company during planning, revisit the affected rows before signing. This worksheet is an editorial application of the linked rules, rather than a determination that a particular structure qualifies.

Compare an LLC, a corporation and the existing European company

Compare the alternatives using the same ownership and cash-flow assumptions. A useful comparison shows who contracts with customers, who receives profits, how the business is taxed and which entity holds the operating risk. The lowest-effort filing is only one input into that comparison.

A new US LLC

An eligible domestic LLC with one member generally defaults to disregarded status for federal income tax; one with two or more members generally defaults to partnership treatment. Those defaults come from the IRS LLC rules . An eligible domestic LLC can elect corporate classification using Form 8832, as described in the SS-4 instructions . The state-law entity continues to be an LLC.

For a European owner, the identity of the taxpayer is a central comparison point. Ask whose income is recognized under the intended US classification and who the home-country authority will regard as earning it. Set out how money is expected to move from customers to the business and ultimately to the owner. An LLC's short formation document cannot supply those answers.

A new US corporation

A C corporation is a separate federal taxpayer under the IRS corporation guidance . Compare the treatment of company profits with the treatment of later payments to shareholders. A plan to retain earnings and a plan to pay out available cash should therefore be modeled separately. Also decide whether the shares will belong to the founder personally or to an existing European company.

A corporation may fit a business that needs a share-based ownership structure, but this assessment does not settle share rights, fundraising terms or securities compliance. Specify those commercial requirements before requesting an incorporation document. Otherwise the tax comparison may use one ownership arrangement while the proposed corporate records use another.

US registration of the European company

Direct registration concerns the existing company's US activity; creating a subsidiary introduces a separate US entity. Compare the two using contracts, assets, liabilities and the desired ownership chain. Have counsel assess liability allocation rather than assuming registration creates a new liability boundary. For federal filing purposes, a foreign corporation engaged in a US trade or business generally needs Form 1120-F, including certain treaty-exempt cases, subject to exceptions in the IRS instructions .

S corporation treatment is a separate election with restrictive eligibility. The IRS eligibility rules exclude nonresident-alien and corporate shareholders. Check the actual shareholder's status; a Europe-based founder should not select an S election from a generic setup menu.

Choose the formation state against the operating footprint

The formation state should be evaluated alongside every state in which the business expects to operate. Begin with planned employees, premises, inventory and customer-facing activity. Record the timing as well as the location: a state that is irrelevant at formation may matter when the first hire or warehouse arrangement begins.

The SBA's registration guidance explains that activity in multiple states can require formation in one state and foreign qualification in others. In this context, foreign can mean a company formed in another US state. It does not necessarily describe the owner's nationality. Qualification requirements need a state-specific check; tax nexus and licensing should be checked alongside them.

A registered agent address records the agent's role in that state. Delaware requires an agent with a physical street address there under its formation instructions . Keep a separate record of where the business and its decision-makers actually operate. Using the agent's address throughout the plan can obscure the facts needed for the other assessments.

Two limited examples show why the annual burden matters. As checked on October 24, 2026, a Delaware domestic LLC owes USD 400 in annual state tax and does not file the domestic corporation annual report, according to the Delaware annual tax guidance . Payment is generally due on June 1 following the close of the calendar year under Delaware's LLC tax law . California generally requires an LLC organized, registered or doing business there to pay USD 800 annually, with exceptions stated by the Franchise Tax Board . Its temporary first-year exemption for tax years beginning during 2021–2023 does not extend to a new 2026 tax year.

These are annual state tax examples, excluding formation charges, agent services, professional work, other taxes and applicable additional obligations. A Delaware LLC with California operations needs both analyses. These figures do not establish the total annual cost of that arrangement or the answer for a corporation.

If California is on the activity map, the California LLC operating obligations provide context for that implementation track; confirm the governing requirements with the state. Once the footprint is documented, the entity proposal can be tested against both US income rules and the relevant European tax system.

Trace the income and the owner before estimating US tax

Classification identifies the US tax framework; actual income and activity determine the next questions within it. First identify the owner correctly. Living in Europe does not establish nonresident-alien status: citizenship, green-card status and US presence must be considered. IRS Publication 519 explains the individual residence tests and the different income scope for residents and nonresidents.

Then separate each revenue stream. Under the publication's general sourcing rules, personal-service income follows where the services are performed; royalties and inventory use different rules. A US customer or payment destination does not supply the service-performance location. For a nonresident individual, review US-source income and income effectively connected with a US trade or business. Do not extend that individual's analysis automatically to a C corporation.

Build the working paper from contracts and actual delivery. For service work, record who performs it and in which countries, including US visits. For a goods business, identify purchasing, production, storage and sales arrangements. For licensing, identify the rights and permitted use. Ask the preparer to explain which facts drive the conclusion for each stream and what evidence would change it.

Where an LLC is taxed as a partnership, a foreign partner's share of effectively connected taxable income can require partnership withholding, as Publication 519 explains. Include that cash requirement in the comparison before assuming that all business cash can be distributed.

A zero-tax assumption needs a supported conclusion for every relevant layer. Ask for a written explanation of the US federal position, the state review and the home-country treatment. A note that merely says the owner is abroad, or that the LLC is disregarded, leaves the operating facts untested. Retain the assumptions with the forecast so a new hire, work trip or business model change prompts a fresh review.

Obtain a country-specific European tax assessment

The home-country review needs the particular country, taxpayer and proposed US structure. Request an answer on entity classification, recognition of income, company residence and available double-tax relief. A reference to European rules without naming the jurisdiction is too broad to support a filing decision.

Ireland supplies a useful, limited management example. Irish Revenue states that a foreign-incorporated company centrally managed and controlled in Ireland is Irish tax resident. Its assessment considers the highest level of control, including where policy and investment decisions are made, major contracts are defined, the head office is located and most directors live. A founder directing a US-incorporated company from Ireland should therefore obtain an Irish residence assessment.

That example does not determine the classification of a particular LLC, resolve a dual-residence case or describe every European country's law. Give the local adviser the governing documents and proposed management arrangements. Ask the adviser to distinguish the treatment of the entity from the treatment of its owner, and to identify any assumptions requiring the US preparer's confirmation.

Treaty relief requires its own work. The IRS treaty index explains that benefits vary by country and income item and are generally linked to residence rather than citizenship. Identify the relevant claimant, treaty provision and supporting facts. The IRS also warns that some US states do not honor treaty provisions, so a federal treaty position cannot close the state review.

For a European parent-company structure, include related-party payments, proposed intellectual-property transfers and profit repatriation in the instructions to both advisers. Ask whether local controlled-foreign-company, transfer-pricing or other anti-avoidance rules affect the proposed arrangement. These are issues to test under the identified country's law; no common outcome follows from the word Europe.

Bring the two written assessments together before filing. If one assumes a transparent entity and the other assumes company-level taxation, require the advisers to address that difference explicitly, including the treatment and timing of any relief. A single combined forecast is useful only when its underlying assumptions agree.

Assign the reporting work created by foreign ownership

Build the reporting list from the selected legal entity and tax treatment. Separate tax returns, information returns, beneficial-ownership reporting and state maintenance. An exemption in one system does not answer the others. Allocate responsibility before the owner sends setup funds, with an accountant holding the transaction records and an identified person monitoring notices.

A US disregarded entity wholly owned by a foreign person has special reporting treatment under the Form 5472 instructions . Contributions and distributions connected with formation can be reportable transactions, even before customer revenue exists. Where required, the entity files Form 5472 with a pro forma Form 1120 using the specified mail or fax procedure; these entities cannot electronically file Form 5472. The initial penalty for a failure to file properly when due is USD 25,000.

Keep the date, amount, parties and purpose of owner funding and payments from the beginning. Ask the preparer to set the applicable tax year, filing date and any extension procedure and to confirm how filing evidence will be retained. For a corporation or direct European-company operation, request the reporting analysis for that route rather than reusing a disregarded-LLC checklist.

Under FinCEN's August 11, 2026 final rule, US-created entities are exempt from BOI reporting . An entity created under European law and registered in the US needs a separate foreign-reporting-company and exemption assessment. This distinction follows where the entity was created. It does not turn on whether the shareholders carry European passports, and the domestic exemption does not remove IRS reporting duties.

Also screen foreign direct investment reporting separately. The current BE-13 regulation uses a foreign ownership or control test of at least 10% of voting securities, or equivalent interests for an unincorporated business. Full-form thresholds and exemption claims are different questions; a small investment is not a universal exclusion. Assign the event-specific screen promptly because the regulation uses 45-calendar-day filing periods for the specified events.

Release the filing instruction and retain separate completion evidence

Once the assessments agree, turn the plan into a controlled filing instruction. Record the exact legal owner, selected entity, formation state, agent, tax classification and required follow-on registrations. Underlying US company formation involves state acceptance of the correct entity document; the tax and operating workstreams need their own completion records.

1. Approve the information to be filed. Reconcile the legal name, ownership arrangement, agent details, business addresses and authorized signer with the assessment. Record any permitted alternative name before submitting.
2. Submit the state document through the selected state's official route. Delaware, for example, accepts its entity certificates through the Document Filing and Certificate Request Service or by mail, with filing fees paid on submission. Retain the submitted version and payment evidence, then the accepted filing returned by the state.
3. Prepare the EIN application from the accepted entity details. Check the IRS application route against the actual office and principal-business facts, then retain the application and assignment evidence.
4. Complete the identified operating-state, tax-account and licensing work. Record the authority, responsible person, submission evidence and next due action separately for each applicable requirement.
5. Confirm the chosen bank or payment provider's requirements and await its decision. Assemble the requested company and ownership evidence, while keeping account acceptance separate from state and IRS records.

The current SS-4 instructions give telephone, fax and mail alternatives for relevant international applicants. They bar online application where there is no US or territorial legal residence, principal place of business, principal office or agency. The responsible party must generally be an individual; line 7b permits foreign or N/A only if that person lacks and is ineligible for an SSN or ITIN. Apply those conditions to the real facts.

When a submission is rejected or additional evidence is requested, retain the notice and reconcile the disputed field with the approved plan before resubmitting. If the proposed repair changes the owner, entity or operating facts, reopen the relevant assessment. A corrected filing should not quietly introduce a different tax structure.

Approve the US route that your evidence supports

Choose the route with an explainable ownership chain, a documented state footprint and compatible US and home-country tax assessments. An LLC, corporation or direct registration can then be evaluated on its actual consequences. A preferred state or familiar entity name should remain a proposal until those assessments support it.

Send the filing team one agreed instruction and send the preparers the same facts. Preserve the worksheet with the approvals, accepted state document and subsequent tax records. If the residence country, place of management or US activity is unresolved, settle that specific question before authorizing a structure that depends on its answer.

After formation, nominate someone to revisit the plan when ownership, hiring, management or revenue arrangements change. The practical goal is a company whose records continue to match its business, with each required filing and approval assigned to a responsible person.