Domestic Company Examples: Tax Rules, GILTI, and State Nexus

A domestic company is any corporation, LLC, partnership, or similar business entity formed under the laws of a US state, the District of Columbia, or the United States itself. The federal tax code fixes this label at the moment of formation and uses nothing else: not where the business operates, not where its executives sit, not where its customers are. That single filing with a state produces a federal tax identity that carries a 21% corporate rate on worldwide income and a specific set of filing obligations that follow the company wherever it does business.¹

What the Tax Code Actually Says

Internal Revenue Code Section 7701(a)(4) applies the term “domestic” to any corporation or partnership “created or organized in the United States or under the law of the United States or of any State.”¹ The same section defines “United States” to include only the 50 states and the District of Columbia.²

A corporation incorporated in Wyoming is domestic. A company organized in the District of Columbia is domestic. A company formed under the laws of Canada, the UK, or the Cayman Islands is not, no matter how large its US footprint. The flip side is equally true: a Delaware corporation headquartered in Tokyo, selling only in Europe, employing nobody in the United States, remains a domestic corporation for federal tax purposes because of where it was formed.

Businesses often choose their state of formation based on favorable corporate governance rules, low fees, or an established body of case law rather than any physical tie to the state. Delaware is the classic example. The choice shapes the entity’s internal governance rules but not its federal tax classification; every US state formation produces the same federal result.

Entity Types That Count

Domestic status reaches every common business structure. Corporations, limited liability companies, general partnerships, limited partnerships, and statutory trusts all count as domestic when organized under state law. The formation document varies: corporations typically file articles or a certificate of incorporation, LLCs file articles of organization or a certificate of formation, and limited partnerships file a certificate of limited partnership.

The federal tax election a business makes is a separate question from its domestic status. A corporation that elects S corporation treatment passes income through to its shareholders but remains a domestic corporation. An LLC that elects to be taxed as a corporation files the same Form 1120 that a traditional C corporation files.³ Domestic is a corporate-law determination made at the state level; the tax election is layered on top of it federally.

Tax on Worldwide Income

The largest practical consequence of domestic status is the worldwide income rule. A domestic corporation owes federal income tax on every dollar of taxable income it earns, regardless of where in the world that income originates. The flat corporate rate is 21% under Internal Revenue Code Section 11.⁴ Profits from a factory in Ohio and profits from a subsidiary in Germany land on the same return.

Every domestic corporation files IRS Form 1120 annually, whether or not it had taxable income that year. The return is generally due by the 15th day of the fourth month after the tax year ends (April 15 for calendar-year filers), with a six-month extension available. Missing the deadline triggers a penalty of 5% of the unpaid tax for each month the return is late, up to 25%. For returns required to be filed in 2026 that are more than 60 days late, the minimum penalty is $525 or the amount of tax due, whichever is smaller.⁵

How Foreign Companies Are Treated Differently

The weight of domestic status becomes clearer when you compare it to how foreign companies are taxed. A foreign corporation engaged in a US trade or business pays tax only on income effectively connected with that business activity, not on its worldwide earnings.⁶ Effectively connected income is taxed at the same rates a domestic corporation would pay, but everything the foreign company earns outside the US stays outside the US tax net.⁷

For passive US-sourced income not connected with a US business, foreign corporations face a flat 30% withholding tax on dividends, interest, rents, and royalties. Tax treaties often reduce or eliminate that rate.⁸ A domestic corporation never operates under this withholding regime on its own income, because it files a full return reporting everything.

The Foreign Tax Credit

Because a domestic company owes US tax on worldwide income, foreign earnings can be taxed twice: once by the country where they were earned and again by the US. The foreign tax credit prevents that. A domestic corporation that pays income taxes to a foreign government can claim a dollar-for-dollar credit against its US liability for those foreign taxes, subject to a limitation that prevents the credit from exceeding the US tax that would have been owed on the same foreign income.⁹

Corporations calculate and claim this credit on Form 1118.¹⁰ Individual owners of pass-through entities that earn foreign income use Form 1116 instead. For most globally operating domestic companies, this credit is the single largest factor in determining how much additional US tax they actually owe on foreign profits.

GILTI and the 2026 Rate Change

Domestic companies that own controlled foreign corporations face an extra layer of tax built to discourage parking profits in low-tax countries. Under IRC Section 951A, US shareholders of a controlled foreign corporation must include the corporation’s Global Intangible Low-Taxed Income in their gross income each year, even if no cash is distributed to the US.¹¹

For tax years beginning in 2026, the math gets more expensive. The deduction a domestic corporation can claim against its GILTI inclusion drops from 50% to 37.5%, pushing the effective GILTI rate from 10.5% to 13.125%.¹² The increase was written into the 2017 tax law and takes effect without any new legislation.

Corporate shareholders are deemed to have paid 80% of the foreign income taxes their controlled foreign corporation paid on the income generating the GILTI inclusion, and those deemed-paid taxes can offset part of the US liability. The GILTI foreign tax credit sits in its own separate basket, and unused credits in that basket cannot be carried forward or back. Any credit you do not use in the current year is permanently lost.¹²

Operating in Other States

Federal domestic status does not grant permission to operate everywhere. Each state treats entities formed elsewhere as “foreign” to that state, even when they are fully domestic federally. A Delaware corporation that opens offices in California is a domestic corporation federally, a domestic corporation in Delaware, and a foreign corporation in California at the same time.

To operate legally in a state other than the one of formation, a company generally must register (often called “qualifying”) with that state’s business filing office. The process typically involves filing an application for a certificate of authority, appointing a registered agent in the new state, and paying filing fees that vary by state and entity type. Skip this step and the consequences bite: most states bar an unqualified company from using their courts to enforce contracts or file lawsuits, and many impose recurring civil fines that accumulate until the company registers.

State Tax Nexus

Qualification is the corporate-law side of crossing state lines. Taxes are a separate question built around “nexus,” the minimum connection a state needs before it can tax your business. Since the Supreme Court’s 2018 decision in South Dakota v. Wayfair, physical presence is no longer required for sales tax. Most states now use an economic nexus threshold, commonly triggered at $100,000 in sales or 200 transactions within the state during a year, though the exact numbers and whether both tests apply vary by state.

For state income tax, Public Law 86-272 protects companies whose only in-state activity is soliciting orders for tangible goods, as long as orders are approved and shipped from outside the state. The protection is narrower than it reads. Several states take the position that routine digital activities (placing cookies on visitors’ browsers, running chatbots for customer support) go beyond solicitation and strip the protection. Any domestic company selling across state lines needs to track where it has nexus, because every state with sufficient contact can impose its own income tax, sales tax, or both.

Keeping the Entity in Good Standing

Forming the entity is only the start. Every state requires ongoing compliance to keep the entity active and in good standing. The specifics vary, but almost every state requires some combination of annual or biennial reports, franchise tax payments, and maintenance of a registered agent with a physical address in the state of formation. Annual report fees typically run from about $25 to $150, though states with franchise taxes can charge substantially more based on authorized shares or revenue.

A domestic company that misses these requirements faces administrative dissolution or revocation of its charter. A dissolved entity generally cannot conduct normal business or file lawsuits, and people acting on its behalf during the dissolution may be held personally liable for debts incurred in that period. The entity’s name can also become available for others to claim while it is dissolved. Reinstatement is possible in most states but requires clearing all overdue filings, paying back fees and penalties, and sometimes filing specific reinstatement paperwork. Contracts signed while dissolved can be challenged, and lawsuits filed during that period may be dismissed for lack of standing.

Beneficial Ownership Reporting No Longer Applies

The Corporate Transparency Act originally required most small domestic companies to file Beneficial Ownership Information reports with the Financial Crimes Enforcement Network, naming the individuals who ultimately own or control the business. That obligation no longer applies to domestic entities. An interim final rule published on March 26, 2025, exempted all entities created in the United States from BOI reporting.¹³ FinCEN found that requiring domestic companies to report would “not serve the public interest” and revised the definition of “reporting company” to cover only entities formed under foreign law that have registered to do business in a US state.¹⁴

Domestic companies do not need to file initial BOI reports, update prior submissions, or correct older filings. FinCEN has signaled that a final rule confirming the exemption is coming, but as of early 2026 the interim rule governs and no domestic filing obligation exists.¹³

1
Office of the Law Revision Counsel. 26 USC 7701 – Definitions
2
Office of the Law Revision Counsel. 26 USC 7701 – Definitions
3
Internal Revenue Service. Instructions for Form 1120
4
Office of the Law Revision Counsel. 26 USC 11 – Tax Imposed
5
Internal Revenue Service. Instructions for Form 1120 (2025)
6
Office of the Law Revision Counsel. 26 USC 882 – Tax on Income of Foreign Corporations Connected With United States Business
7
Internal Revenue Service. Effectively Connected Income (ECI)
8
Office of the Law Revision Counsel. 26 USC 881 – Tax on Income of Foreign Corporations Not Connected With United States Business
9
Internal Revenue Service. Instructions for Form 1118 (Rev. December 2025)
10
Internal Revenue Service. About Form 1118, Foreign Tax Credit – Corporations
11
eCFR. 26 CFR 1.951A-1 – General Provisions
12
Internal Revenue Service. Concepts of Global Intangible Low-Taxed Income Under IRC 951A
13
Federal Register. Beneficial Ownership Information Reporting Requirement Revision and Deadline Extension
14
FinCEN. Beneficial Ownership Information Reporting