The tax considerations of expanding internationally start the moment your company has enough presence in another country for that country to tax you, and they extend through how you price internal deals, how foreign subsidiary income hits your U.S. return, what gets withheld on money flowing home, which indirect taxes apply to your sales, and a stack of U.S. informational filings whose penalties can outrun the tax itself. The pieces interact, and a decision that saves money on one line often creates exposure on another.
When a Foreign Country Can Tax Your Profits
A foreign government can reach your company’s profits only when you have a sufficient connection to that country. In international tax, that connection is called a permanent establishment. Under the framework used in most tax treaties, based on the OECD Model Tax Convention, a permanent establishment exists when you maintain a fixed place of business in the foreign country through which you conduct operations. An office, a factory, a workshop, or a management headquarters all qualify. A warehouse qualifies too if it goes beyond simple storage and plays a role in delivering goods to customers.
Physical space is not the only trigger. A dependent agent, someone who routinely signs contracts on your behalf abroad, can create a permanent establishment even if your company has no office in that country. A sales representative closing deals in Tokyo could mean your company owes Japanese corporate tax on the profits tied to those deals. Independent contractors generally do not create this risk, but the line between dependent and independent is narrower than many companies assume.
Once a permanent establishment exists, you owe tax on the profits attributable to the activities conducted through it. That attribution exercise, deciding how much profit belongs to the foreign operation and how much to the rest of the company, is itself a source of disputes. Overallocate profits abroad and you may underpay at home; underallocate and the foreign authority comes after you.
Pricing Deals Between Your Own Entities
When parts of the same corporate group trade goods, share services, or license intellectual property across borders, tax authorities on both sides scrutinize the prices. If a parent sells components to its overseas subsidiary at an artificially low price, profits shift to the subsidiary’s country, potentially at a lower rate. The internationally accepted guard against this is the arm’s length principle, which requires related entities to price their internal deals the way unrelated parties would in an open market.
The arm’s length principle applies to every type of intercompany transaction: physical goods, management fees, loans, software licenses, and the use of brand names or patents.1OECD. Transfer Pricing Intellectual property is the hardest to price correctly because no two patents or brand portfolios are identical, making comparable market data scarce.
Under IRC Section 482, the IRS can reallocate income and deductions among related entities whenever it determines the arrangement does not reflect economic reality.2Office of the Law Revision Counsel. 26 US Code 482 – Allocation of Income and Deductions Among Taxpayers The accuracy-related penalty for transfer pricing mistakes is 20 percent of the resulting underpayment, and doubles to 40 percent when the mispricing is extreme.3Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments Companies typically invest in economic studies and benchmarking analyses to justify their pricing and avoid those penalties.
Documentation You’ll Need
Most countries expect multinational groups to maintain detailed transfer pricing documentation. The OECD framework calls for a master file covering the group’s overall structure, key intangible assets, and intercompany financial arrangements, plus a local file for each country with a granular analysis of that entity’s specific transactions. Tax authorities routinely request these during audits, and showing up without them shifts the burden of proof against you.
U.S. multinational groups with annual revenue of $850 million or more also file Form 8975, the country-by-country report. It breaks down revenue, profits, taxes paid, employees, and tangible assets for every jurisdiction where the group operates.4Internal Revenue Service. About Form 8975, Country by Country Report The information goes to the IRS and can be shared with foreign tax authorities under exchange agreements.
Foreign Subsidiary Income That Hits Your U.S. Return Now
Owning a foreign subsidiary does not defer all U.S. tax until the money comes home. Two regimes reach into a controlled foreign corporation (CFC) and pull certain income onto your domestic return whether or not the subsidiary pays a dividend.
Subpart F Income
Subpart F targets categories of income that are easy to move to low-tax jurisdictions: passive income like dividends, interest, and royalties earned by the CFC; sales income from buying or selling goods through a related party when the goods never enter the CFC’s own country; and service income earned by the CFC on behalf of a related party outside the CFC’s home country. When a CFC earns significant amounts of any of these, the U.S. shareholder picks up its share as taxable income in the current year, no distribution required.
Global Intangible Low-Taxed Income
GILTI goes further. It captures a CFC’s income that exceeds a deemed routine return of 10 percent on the subsidiary’s tangible business assets, such as factories and equipment. The logic: income above that routine return likely comes from intangible assets that are easy to park in a low-tax country.
A domestic corporation that includes GILTI can claim a 40 percent deduction under IRC Section 250, bringing the effective U.S. rate on GILTI to roughly 12.6 percent before foreign tax credits.5Office of the Law Revision Counsel. 26 USC 250 – Foreign-Derived Deduction Eligible Income and Net CFC Tested Income That deduction dropped from 50 percent to 40 percent under legislation signed in July 2025, so structures modeled on the old rate need to be recalculated. Foreign taxes paid by the CFC can offset some of the GILTI liability through the foreign tax credit, but the credit is limited to the GILTI basket and operates on a blended, worldwide basis rather than country by country.
Withholding When Money Moves Home
When a foreign subsidiary sends cash back to its U.S. parent, the foreign country typically takes a cut first. Dividends, interest, royalties, and fees for technology or services are all common targets. The foreign entity making the payment withholds the tax and remits it to its local revenue authority.
Statutory withholding rates often sit around 30 percent for dividends and other passive income, though the actual rate varies by country and income type.6Internal Revenue Service. Withholding on Specific Income That immediate haircut reduces cash available for reinvestment or distribution, so the structure and timing of cross-border payments matters. A royalty payment might face a different rate than a dividend from the same country.
One useful exception is the portfolio interest exemption. Interest paid to a foreign lender is exempt from U.S. withholding tax if the debt is in registered form and the lender does not own 10 percent or more of the borrower’s voting stock.7Office of the Law Revision Counsel. 26 USC 871 – Tax on Nonresident Alien Individuals Banks lending in the ordinary course and CFCs receiving interest from a related U.S. entity do not qualify. For companies financing foreign operations with intercompany loans, the 10 percent ownership threshold means parent-subsidiary lending almost never benefits, but third-party foreign lenders often do.
Preventing Double Taxation
Without relief mechanisms, the same profit is taxed twice: once where it was earned and again on the domestic return. Two tools address that.
Tax Treaties
Bilateral tax treaties allocate taxing rights between two countries and reduce or eliminate withholding rates on cross-border payments.8European Commission. Double Taxation Conventions A treaty might cut the withholding rate on dividends from 30 percent to 15 percent, 5 percent, or zero, depending on ownership level and income type. To claim treaty benefits, the recipient typically provides a residency certificate to the foreign payor. Miss that step and the full statutory rate applies; clawing back the excess through a refund claim is slow and not guaranteed.
The Foreign Tax Credit
The foreign tax credit lets a U.S. company subtract qualifying foreign income taxes from its domestic tax bill dollar for dollar.9Internal Revenue Service. Foreign Tax Credit If your subsidiary pays $500,000 in corporate income tax abroad, that $500,000 can reduce what you owe the IRS. You can instead deduct foreign taxes as a business expense, but the credit is almost always more valuable because it offsets liability directly rather than just reducing taxable income.
The credit is capped. Foreign taxes cannot offset more than the U.S. tax attributable to your foreign-source income. The formula: multiply total U.S. tax liability by a fraction whose numerator is foreign-source taxable income and denominator is worldwide taxable income.10Internal Revenue Service. FTC Limitation and Computation If most of your income is domestic, the cap can leave you with excess credits that only carry forward. The credit is also calculated in separate baskets (general, passive, foreign branch, GILTI), so credits from one category cannot offset tax on another.
VAT, GST, and Other Indirect Taxes
Income tax gets most of the attention, but consumption taxes can blindside a company that only planned for direct taxation. More than 170 countries impose some form of VAT or GST, and unlike U.S. sales tax, these are usually the seller’s obligation to collect and remit whether or not the seller has a local office.
In the European Union, a non-EU business selling goods or digital services to EU customers must register for VAT once sales cross relatively low thresholds. Foreign businesses generally have no minimum registration threshold, so the obligation can kick in from the first sale. The EU’s One Stop Shop system lets a company file a single VAT return covering all member states, which simplifies compliance but does not eliminate it. Australia requires GST registration when sales to Australian consumers hit AUD 75,000; Canada’s federal GST threshold is CAD 30,000.
For business-to-business services, many jurisdictions use a reverse charge that shifts VAT reporting from the seller to the buyer. The seller invoices without VAT and the buyer self-assesses on its own return. When the buyer can reclaim input tax, the net cost is zero, but the paperwork still has to be right. Errors on a VAT-neutral transaction can still trigger penalties.
The 15 Percent Global Minimum Tax
The OECD’s Pillar Two framework introduces a 15 percent global minimum tax on multinational groups with consolidated annual revenue of at least €750 million. If a group’s effective tax rate in any jurisdiction falls below 15 percent, a top-up tax closes the gap. As of mid-2025, more than 40 jurisdictions have enacted Pillar Two legislation; the United States has not adopted it.
The practical impact for U.S. companies is indirect but real. Many countries have enacted a Qualified Domestic Minimum Top-Up Tax that collects the top-up locally rather than letting another country claim it. If your subsidiary sits in a country with a QDMTT and pays an effective rate below 15 percent, that country will impose the difference. This reduces the benefit of locating operations in traditionally low-tax jurisdictions, even without U.S. adoption of Pillar Two.
Companies above the €750 million threshold need to model the effective tax rate in every jurisdiction where they operate, using each country’s specific Pillar Two adjustments. The compliance burden is substantial because Pillar Two uses its own definitions of income and taxes, which do not map neatly onto any single country’s tax return.
U.S. Filings Beyond the Tax Return
International expansion triggers a web of informational filings separate from the standard return. Missing one is easy, and the penalties are designed to make sure you notice.
Form 5471 for Foreign Corporation Ownership
Any U.S. person (including domestic corporations, partnerships, and trusts) with a specified level of ownership in a foreign corporation must file Form 5471.11Internal Revenue Service. Certain Taxpayers Related to Foreign Corporations Must File Form 5471 The form reports the foreign corporation’s income, assets, liabilities, and transactions with related parties. Failure to file draws a $10,000 penalty per form per year. If the IRS sends a notice and the form still doesn’t come in within 90 days, another $10,000 accrues every 30 days, up to $50,000 in additional penalties.12Office of the Law Revision Counsel. 26 USC 6038 – Information Reporting With Respect to Certain Foreign Corporations and Partnerships A single missed form can cost $60,000 before any tax on the underlying income is even assessed.
Form 8858 for Disregarded Entities and Branches
If the overseas operation is a disregarded entity or a foreign branch rather than a separate corporation, Form 8858 applies instead.13Internal Revenue Service. About Form 8858, Information Return of US Persons With Respect to Foreign Disregarded Entities FDEs and Foreign Branches FBs Financial data, intercompany transactions, and functional descriptions all get reported. The penalty structure mirrors Form 5471.
Form 8938 for FATCA Reporting
The Foreign Account Tax Compliance Act requires certain domestic entities to report specified foreign financial assets on Form 8938 when the total value exceeds $50,000 on the last day of the tax year or $75,000 at any point during the year.14Internal Revenue Service. Do I Need to File Form 8938 Statement of Specified Foreign Financial Assets It applies to closely held domestic corporations and partnerships where at least 50 percent of gross income is passive or at least 50 percent of assets produce passive income. Form 8938 overlaps with but does not replace the FBAR; they are separate filings with different thresholds, different agencies, and different penalties.
FBAR for Foreign Bank Accounts
Any U.S. person with a financial interest in, or signature authority over, foreign financial accounts whose combined value exceeds $10,000 at any point during the year must file the Report of Foreign Bank and Financial Accounts with FinCEN.15Internal Revenue Service. Report of Foreign Bank and Financial Accounts FBAR It reaches business entities and individuals with signing authority over company accounts abroad.
The penalties are among the harshest in the code. A non-willful violation carries a maximum civil penalty of $16,536 per account per year, adjusted annually for inflation.16eCFR. 31 CFR 1010.821 – Penalty Adjustment and Table Willful violations jump to the greater of $100,000 (also inflation-adjusted) or 50 percent of the highest account balance during the year, and criminal prosecution for willful failures can result in up to five years in prison.15Internal Revenue Service. Report of Foreign Bank and Financial Accounts FBAR When operating cash sits in several foreign accounts, even modest balances trigger reporting, and the per-account structure means exposure adds up fast.