Can a Foreign Person Own an S Corp? Rules and Alternatives

No. A foreign person who is not a U.S. tax resident cannot own shares in an S corporation. Federal law limits S corporation shareholders to individuals who are U.S. citizens or residents, certain trusts, and estates, and it expressly excludes nonresident aliens. Even one ineligible shareholder terminates the S election automatically.¹ Foreign entrepreneurs still have real options for owning a U.S. business — usually a C corporation or an LLC — but the S corporation is not one of them.

Who the Rule Treats as Foreign

The statute uses the term “nonresident alien,” not “foreign national.” You are a nonresident alien if you are neither a U.S. citizen nor a U.S. tax resident under the green card test or the substantial presence test.²

The green card test is simple: hold a lawful permanent resident card at any point during the calendar year and you are a U.S. resident for tax purposes.

The substantial presence test counts days. You meet it if you were physically in the U.S. at least 31 days during the current year and at least 183 days across a three-year window, using this weighting:

Every day in the current year counts as one full day.
Each day in the prior year counts as one-third of a day.
Each day two years back counts as one-sixth of a day.

Hit 183 on that weighted scale and you are a U.S. tax resident, which makes you eligible to hold S corporation stock.² Fall short and you are a nonresident alien, regardless of visa status, business ties, or how much U.S. income you earn.

Why the S Corporation Is Closed to Foreign Owners

The prohibition is built into what an S corporation is. To qualify, a corporation must be domestic, have no more than 100 shareholders, issue only one class of stock, and limit its shareholders to eligible individuals, certain trusts, and estates. Partnerships, other corporations, and nonresident aliens are all excluded.¹

The logic is structural. An S corporation pays no federal income tax; all of its income flows through to shareholders’ personal returns.³ That model works because every eligible shareholder files a U.S. return reporting worldwide income. Nonresident aliens are taxed only on U.S.-source income and file under a different framework, so putting them into the pass-through chain would break the collection mechanism the S election depends on.

What Happens If a Foreign Person Ends Up on the Cap Table

The consequences are immediate and expensive. The moment a nonresident alien acquires stock, the corporation stops qualifying as a small business corporation and the S election terminates on that date.⁴ From that day forward the company is taxed as a C corporation.

The tax year splits in two. The period before the termination is an “S short year” taxed under pass-through rules. The period from the termination date onward is a “C short year” subject to corporate-level tax.⁵ Double taxation kicks in for the C portion, and the discovery often comes months later.

Removing the foreign shareholder does not fix the problem on its own. Federal law imposes a five-year waiting period after a termination before the corporation (or a successor) can make a new S election, unless the IRS consents to an earlier one.⁴

Asking the IRS for Inadvertent Termination Relief

If the ineligible shareholder was a genuine mistake, the corporation can ask the IRS to treat the S election as if it had never terminated. Relief is available when the IRS is satisfied that the termination was inadvertent, the company corrected the problem within a reasonable time after finding it, and the corporation and its shareholders agree to whatever adjustments the IRS requires for the affected period.⁶

The corporation carries the burden of proving the event was not reasonably within its control and was not part of a plan to end the election. Relief is typically pursued through a private letter ruling, which takes time and money but is much cheaper than losing S status for five years.

What Foreign Owners Use Instead

Two U.S. structures accept foreign ownership without restriction.

C Corporation

A C corporation places no limits on who can own shares. A foreign individual or foreign entity can own 100% of a U.S. C corporation, sit on its board, and hold any officer role. There is no shareholder cap, and the company can issue multiple classes of stock.⁷ For a foreign founder planning to raise capital or bring on additional owners over time, this is usually the more flexible choice.

Limited Liability Company

A U.S. LLC can be entirely foreign-owned, whether single-member or multi-member. It offers limited liability with fewer formalities than a corporation. A foreign-owned LLC cannot elect S corporation treatment because its owners are not eligible shareholders, but it can elect to be taxed as a C corporation. By default, a single-member LLC is a disregarded entity, and a multi-member LLC is taxed as a partnership.

Tax Consequences Worth Knowing Before You Choose

C Corporation Dividends and Withholding

A C corporation pays federal income tax at a flat 21% on its profits. When after-tax profits are distributed as dividends, shareholders owe tax again. For a foreign shareholder, dividends from a U.S. corporation carry a 30% withholding tax at the source.⁸ The company or its paying agent withholds before the dividend leaves the U.S.

A tax treaty between the U.S. and the shareholder’s home country can bring that rate down, sometimes to 15%, 10%, or 5% for substantial corporate shareholders. To claim a reduced treaty rate, the foreign shareholder must file Form W-8BEN with the withholding agent before payments are made.⁹ Without that form on file, the full 30% applies.

LLC Pass-Through Withholding

A multi-member LLC taxed as a partnership pays no federal income tax itself; profits and losses flow to the members. A foreign member with income effectively connected to a U.S. trade or business owes U.S. tax on that income and needs an Individual Taxpayer Identification Number to file Form 1040-NR.¹⁰

The partnership itself must withhold on each foreign partner’s share of effectively connected income. For individual foreign partners the rate is the highest individual rate; for corporate foreign partners it is the highest corporate rate, currently 21%.¹¹ The withholding is a prepayment credited against the partner’s final liability, but the cash is tied up until the return is processed.

U.S. Estate Tax Exposure

This one catches many foreign owners off guard. Stock in a U.S. corporation is a U.S.-situs asset for estate tax purposes. If a nonresident alien who owns shares in a U.S. company dies, those shares are subject to U.S. estate tax, and the filing threshold for nonresident aliens is just $60,000, an amount that is not indexed for inflation.¹² The exemption for U.S. citizens and residents runs into the millions. A foreign owner with even a modest stake in a U.S. corporation can leave heirs a significant estate tax bill.

Reporting Obligations That Come With Foreign Ownership

Form 5472

Any U.S. corporation that is at least 25% foreign-owned must file Form 5472 to report transactions with its foreign owners. Since 2017, the requirement also reaches foreign-owned single-member LLCs treated as disregarded entities, which must file a pro forma Form 1120 with Form 5472 attached even when the LLC has no income tax filing obligation otherwise.¹³

The penalty for failing to file, or for filing with incomplete information, is $25,000 per return per year. If the failure continues more than 90 days after IRS notice, an additional $25,000 accrues for each 30-day period the failure persists.¹⁴ The penalty applies even when the entity owes no tax.

Individual Filings

Foreign owners of a pass-through entity with effectively connected income file Form 1040-NR each year and need an ITIN to do so. Foreign shareholders of a C corporation who receive only dividends generally satisfy their U.S. tax obligation through the withholding described above and may not need to file a return, but they still need a Form W-8BEN on file with the withholding agent to establish foreign status and claim any treaty benefit.⁹

1
Office of the Law Revision Counsel. 26 USC 1361 – S Corporation Defined
2
Internal Revenue Service. Substantial Presence Test
3
Internal Revenue Service. S Corporations
4
Office of the Law Revision Counsel. 26 USC 1362 – Election, Revocation, Termination
5
eCFR. 26 CFR 1.1362-3 – Treatment of S Termination Year
6
eCFR. 26 CFR 1.1362-4 – Inadvertent Terminations and Inadvertently Invalid Elections
7
International Trade Administration. Business Structure – An Overview of Common Business Structures for Foreign Investors
8
Office of the Law Revision Counsel. 26 USC 871 – Tax on Nonresident Alien Individuals
9
Internal Revenue Service. Instructions for Form W-8BEN
10
Internal Revenue Service. U.S. Taxpayer Identification Number Requirement
11
Office of the Law Revision Counsel. 26 USC 1446 – Withholding of Tax on Foreign Partners Share
12
Internal Revenue Service. Estate Tax for Nonresidents Not Citizens of the United States
13
Internal Revenue Service. Instructions for Form 5472
14
Office of the Law Revision Counsel. 26 USC 6038A – Information With Respect to Certain Foreign-Owned Corporations