A foreign subsidiary is a company that a US parent business creates and controls in another country, incorporated under that country’s laws through majority ownership of its shares. The structure gives the parent a liability shield that a simple overseas office cannot: the subsidiary’s debts and legal problems generally stay with the subsidiary. That protection comes attached to a demanding set of US tax and reporting obligations, including penalties that can reach $60,000 a year for a single missed form.
Subsidiary vs. Branch
The difference between a subsidiary and a branch is the difference between creating a new legal person and extending yourself. A foreign subsidiary has its own legal identity under the host country’s laws. It signs its own contracts, owns its own assets, and answers for its own debts. The parent’s financial exposure is generally limited to what it invested in the subsidiary’s stock.
A foreign branch is just the US company operating overseas. There is no separate legal entity. Every contract the branch signs, every debt it incurs, and every lawsuit it faces belongs to the parent. Creditors of a branch can pursue the parent’s US assets directly. That is why companies entering unfamiliar markets almost always incorporate a subsidiary rather than open a branch.
The shield is not absolute. Courts in the US and abroad can pierce the corporate veil when the parent treats the subsidiary as an alter ego rather than a genuinely independent entity. Commingling funds between parent and subsidiary accounts, failing to keep separate books, undercapitalizing the subsidiary, or using it primarily to commit fraud or evade obligations can all invite veil-piercing. Keeping the subsidiary properly funded and operationally independent is what makes the liability protection real.
Ownership and Local Legal Form
A wholly-owned subsidiary is one where the parent holds 100% of the shares. A partially-owned subsidiary is often created through a joint venture with a local partner, with a negotiated agreement covering management, profit splits, and exit rights. Under general corporate law, a parent-subsidiary relationship exists when the parent holds more than 50% of the voting shares.
Different thresholds apply for US tax purposes. A foreign corporation becomes a controlled foreign corporation when US shareholders collectively own more than 50% of its voting power or stock value, which pulls in the reporting and tax rules covered below.
The legal form of the subsidiary is dictated by the host country’s commercial code, not US law. You are not setting up an American corporation abroad; you are creating a local entity that takes whatever form that country’s laws require. Each form has its own rules on minimum share capital, board composition, and what financial information must be made public. Choosing the wrong form can mean higher capital requirements, unnecessary disclosure obligations, or a governance structure that does not fit the business.
How the US Taxes a Foreign Subsidiary’s Income
The subsidiary pays income tax in its host country like any other local business. Corporate rates range from near zero in certain low-tax jurisdictions to over 30% in countries like Japan and Portugal. The complexity starts on the US side. Even though the subsidiary is a separate legal person abroad, US tax law has several mechanisms that reach its income before the parent ever sees a dividend.
Controlled Foreign Corporations and Subpart F
A foreign corporation is a controlled foreign corporation, or CFC, if US shareholders own more than 50% of the total voting power or stock value.1Office of the Law Revision Counsel. 26 USC 957 – Controlled Foreign Corporations For most foreign subsidiaries of US companies, this test is easily met.
CFC status triggers the Subpart F rules, which tax certain categories of income to the US parent in the year earned, whether or not any cash comes back to the US. Subpart F income includes insurance income, foreign base company income (a broad category covering passive investment returns, sales income routed through low-tax intermediaries, and certain services income), income tied to international boycotts, and illegal payments like bribes.2Office of the Law Revision Counsel. 26 USC 952 – Subpart F Income Defined Congress did not want US companies parking passive income in an offshore subsidiary to defer US tax.
Net CFC Tested Income
For tax years after December 31, 2025, what was previously called global intangible low-taxed income (GILTI) has been renamed net CFC tested income. The concept is the same: the US parent must include in its gross income its share of the CFC’s tested income, whether or not a distribution is made.3Office of the Law Revision Counsel. 26 USC 951A – Net CFC Tested Income Included in Gross Income of United States Shareholders Tested income is the CFC’s gross income minus items already captured by Subpart F, related-party dividends, and oil and gas extraction income.
A Section 250 deduction offsets part of the inclusion. For 2026 and beyond, domestic corporations can deduct 40% of the net CFC tested income inclusion, which produces an effective federal rate of about 12.6% before foreign tax credits.4Office of the Law Revision Counsel. 26 USC 250 – Foreign-Derived Deduction Eligible Income Through 2025 the deduction was 50% and the effective rate 10.5%. Subsidiaries in moderate-tax countries may now generate enough foreign tax credits to fully offset the US inclusion, while those in very low-tax jurisdictions will see a higher residual US bill than before.
A high-tax exclusion election is available. If the subsidiary’s income is taxed locally at an effective rate above 90% of the US corporate rate (currently 18.9%, based on 90% of 21%), the parent can elect to exclude that income from the net CFC tested income calculation entirely. The trade-off: foreign taxes paid on excluded income cannot be credited. The election is all-or-nothing and applies to every qualifying unit across all of the parent’s CFCs.
The Dividends Received Deduction
When the subsidiary does distribute accumulated profits, those dividends are generally eligible for a 100% deduction under Section 245A, which effectively exempts most repatriated foreign earnings from US corporate income tax.5Office of the Law Revision Counsel. 26 USC 245A – Deduction for Foreign Source-Portion of Dividends Received by Domestic Corporations The deduction applies only to the foreign-source portion of dividends from a “specified 10-percent owned foreign corporation,” which includes any CFC where a US corporate shareholder owns at least 10%.6Internal Revenue Service. Section 245A Dividends Received Deduction Overview
Three conditions must be met. Only domestic C corporations qualify; the deduction is not available to individuals, partnerships, REITs, or regulated investment companies. The parent must own at least 10% of the foreign corporation’s voting stock or value. And the parent must satisfy a one-year holding period for the shares before the dividend is paid.6Internal Revenue Service. Section 245A Dividends Received Deduction Overview Selling shares shortly after a large dividend to claim the deduction is what the holding period was designed to block.
Foreign Tax Credits
Because the subsidiary pays income tax in its host country while the parent may owe US tax on the same income under the CFC or net CFC tested income rules, Section 901 provides a credit against US tax for income taxes paid or accrued to a foreign country.7Office of the Law Revision Counsel. 26 USC 901 – Taxes of Foreign Countries and of Possessions of United States Section 904 limits the credit so it cannot offset US tax on domestic income, but for a subsidiary operating in a country with a tax rate near or above the US rate, foreign tax credits can wipe out most of the residual US bill.
The interaction between the Section 250 deduction and the foreign tax credit is where the math turns dense. Because the Section 250 deduction reduces the amount of income subject to US tax, it also reduces the foreign tax credit limitation. Companies with subsidiaries in multiple countries model this country by country. Getting it wrong means either paying more US tax than necessary or claiming credits that get disallowed on audit.
Transfer Pricing
Whenever the parent and subsidiary transact with each other — selling goods, licensing intellectual property, providing management services, lending money — the IRS requires the pricing to reflect what unrelated parties dealing at arm’s length would have agreed to.8eCFR. 26 CFR 1.482-1 – Allocation of Income and Deductions Among Taxpayers Section 482 gives the IRS broad authority to reallocate income between related businesses when the pricing does not.9Office of the Law Revision Counsel. 26 USC 482 – Allocation of Income and Deductions Among Taxpayers
This is where most multinational audits focus. If the parent licenses a patent to the subsidiary at a below-market royalty, the IRS can impute a higher rate and tax the parent on income it never received. The regulations prescribe multiple methods for testing arm’s length pricing, and companies must keep contemporaneous documentation justifying the method they chose. Disputes between the IRS and large multinationals regularly run into tens or hundreds of millions of dollars.
US Reporting Requirements and Penalties
Reporting obligations for owning a foreign subsidiary are extensive, and penalties for non-compliance are severe relative to other tax filing failures. The IRS treats foreign-operations information as difficult to verify independently and uses steep penalties to encourage voluntary compliance.
Form 5471
US citizens, residents, and domestic corporations with certain relationships to a foreign corporation must file Form 5471 annually with their income tax return.10Internal Revenue Service. Certain Taxpayers Related to Foreign Corporations Must File Form 5471 The form reports the subsidiary’s ownership structure, financial statements, and income. For a CFC, it also reports the Subpart F and net CFC tested income calculations.
The initial penalty for failing to file is $10,000 per form, per year. If the failure continues more than 90 days after the IRS sends a notice, an additional $10,000 accrues for each 30-day period (or fraction of one), up to a $50,000 continuation cap. The total exposure for a single missed filing is $60,000.11Internal Revenue Service. Failure to File the Form 5471 – Category 4 and 5 Filers Because the penalty is per form and per year, a parent with three CFCs that misses two years of filings faces up to $360,000 before any tax adjustments.
FBAR (FinCEN Form 114)
Any US person with a financial interest in or signature authority over foreign financial accounts must file a Report of Foreign Bank and Financial Accounts when the combined value of those accounts exceeds $10,000 at any point during the year.12FinCEN. Report Foreign Bank and Financial Accounts The subsidiary’s bank accounts typically trigger this for the parent, and often for individual officers with signing authority. The FBAR is filed electronically with FinCEN, not the IRS, and is due April 15 with an automatic extension to October 15.
Non-willful violations carry a civil penalty of up to $16,536 per report. Willful violations can result in a penalty equal to the greater of $165,353 or 50% of the account balance at the time of the violation. Criminal penalties are also possible for willful failures. Following the Supreme Court’s decision in Bittner v. United States, non-willful penalties are assessed per report rather than per account, which limits exposure for filers with multiple accounts. One missed filing can still cost five figures.
Form 8938 (FATCA)
Separately from the FBAR, certain domestic entities must file Form 8938 to report specified foreign financial assets when the total value exceeds $50,000 on the last day of the tax year or $75,000 at any time during the year.13Internal Revenue Service. Do I Need to File Form 8938, Statement of Specified Foreign Financial Assets The requirement applies to “specified domestic entities,” meaning closely held domestic corporations or partnerships where at least 50% of gross income is passive or at least 50% of assets produce passive income. Form 8938 is filed with the income tax return, not separately.
Ongoing Governance and Local Compliance
Running a foreign subsidiary means complying with two sets of rules at once: the host country’s corporate governance requirements and the US reporting obligations above. Ignoring either creates legal exposure.
Most host countries require the subsidiary to maintain a local board of directors or at least a statutory agent authorized to receive official communications. The subsidiary must follow local labor laws, which in many countries regulate working hours, termination procedures, and employee benefits more strictly than their US equivalents. Terminating an employee in Germany or France, for example, involves notice periods and procedural steps that would surprise a manager used to at-will employment.
Financial reporting adds another layer. The subsidiary must prepare statements under the host country’s accepted accounting standards. Over 140 jurisdictions require or permit International Financial Reporting Standards (IFRS) rather than US GAAP. Because the parent must consolidate the subsidiary’s financials under US GAAP for its own reporting, companies either keep dual accounting records or perform conversion adjustments at each reporting period. Neither approach is cheap.
Routine local compliance includes annual filings with the commercial registry confirming current directors and share capital, maintaining statutory records such as board meeting minutes and shareholder registers at the registered office, and filing local tax returns. Letting any of these lapse can cost the subsidiary its good standing, which in some jurisdictions means losing the ability to enforce contracts or access local courts.
Dissolving a Foreign Subsidiary
Winding down a foreign subsidiary is generally more complicated and time-consuming than setting one up. The process involves both local dissolution procedures and US tax filings, and doing them in the wrong order can create unexpected tax bills.
On the US side, the parent must file Form 966 within 30 days after adopting a resolution to dissolve or liquidate the subsidiary.14Internal Revenue Service. About Form 966, Corporate Dissolution or Liquidation The liquidation itself may trigger recognition of gain or loss on the subsidiary’s assets, and any previously untaxed earnings can become taxable to the parent on distribution. A final Form 5471 must be filed for the CFC’s last tax year.10Internal Revenue Service. Certain Taxpayers Related to Foreign Corporations Must File Form 5471
On the host country side, dissolution typically involves settling outstanding debts, filing final local tax returns, notifying creditors, and deregistering with the commercial registry. Many countries impose a mandatory waiting period between the announcement of dissolution and final liquidation, during which creditors can make claims. Employee terminations during a wind-down often trigger additional severance obligations under local labor law. The full process can take anywhere from several months to over a year, depending on the jurisdiction and the complexity of the subsidiary’s operations.