Imagine owning a profitable company outside the United States, leaving every dollar inside the business, and then finding out that you may still have income to report on your U.S. tax return. Welcome to one of the most misunderstood areas of international taxation.
Imagine this.
You are a U.S. citizen or U.S. tax resident and you own 70% of a successful company in Mexico.
The company had a great year. Revenue increased. Customers paid on time. Expenses were under control. After salaries, rent, equipment, operating expenses, and Mexican taxes, the company finished the year with a substantial profit.
But you didn't take the money home. You didn't transfer it to your U.S. bank account. You didn't receive a dividend.
Instead, you left the money inside the company because next year you plan to purchase equipment, hire employees, increase inventory, or expand into another location.
From your perspective, the answer seems obvious: “I didn't receive the money, so why would I personally owe U.S. tax on it?”
Unfortunately, when a U.S. taxpayer owns a foreign corporation, the answer can be much more complicated. Under certain U.S. international tax rules, a U.S. shareholder can potentially be required to include income associated with a foreign corporation even when the company never actually distributes that money to the shareholder.
One of the major rules that can create this result is known as GILTI. Despite its strange name, GILTI is something ordinary owners of profitable foreign businesses need to understand.
First, Let's Separate the Company From the Shareholder
Imagine your Mexican company earns $500,000. That does not automatically mean you personally received $500,000. The corporation is a separate entity with its own bank account, expenses, employees, and obligations.
But U.S. international tax law contains rules designed to prevent certain foreign corporate earnings from being indefinitely deferred outside the United States. Those rules can sometimes require qualifying U.S. shareholders to recognize certain foreign corporate income before receiving a cash distribution.
To understand why, we first need to talk about a Controlled Foreign Corporation.
What Is a Controlled Foreign Corporation?
A Controlled Foreign Corporation, usually called a CFC, is a classification under U.S. international tax law. The word “controlled” does not mean the IRS has taken control of your company or that the company did anything wrong.
In general terms, a foreign corporation can become a CFC when more than 50% of its stock—measured under applicable voting power or value rules—is owned by qualifying U.S. shareholders, taking into account applicable direct, indirect, and constructive ownership rules.
Consider a simple example. You own 70% of a Mexican corporation and are a U.S. person. A Mexican business partner who is not a U.S. person owns the remaining 30%. That structure should immediately raise the question of whether the Mexican corporation is a CFC.
Once a foreign corporation is classified as a CFC, additional U.S. reporting and income inclusion rules can apply.
Why Does the United States Tax Income That Wasn't Distributed?
Imagine a U.S. taxpayer owns a foreign corporation that earns millions every year but never pays dividends. Without anti-deferral rules, certain foreign corporate income could potentially remain outside the shareholder's current U.S. tax base for many years.
Congress has created rules intended to address this type of deferral. One of the older regimes is Subpart F. A newer and extremely important regime is GILTI.
The basic concept is relatively easy to understand: the United States may sometimes tax a qualifying U.S. shareholder on certain earnings of a foreign corporation before the shareholder actually receives the cash.
What Exactly Is GILTI?
GILTI stands for Global Intangible Low-Taxed Income.
That name creates a lot of confusion. If you own a trucking company, hotel, manufacturer, restaurant group, medical business, or warehouse in Mexico, you might assume a rule containing the word “intangible” cannot apply to you.
The important point is that GILTI is not limited to technology companies or businesses holding patents and trademarks. A normal operating foreign corporation can potentially generate income that enters the GILTI calculation.
Imagine Your Mexican Company Earns $1 Million
Imagine you own 100% of a Mexican operating company. During the year, the company has $5 million in revenue. After wages, rent, inventory, professional fees, operating expenses, depreciation, and other deductions, the company produces $1 million of profit. The company also pays Mexican income taxes.
You decide not to distribute the remaining money because the company needs cash. Maybe you're building a second facility, purchasing trucks, carrying receivables, or strengthening the company's reserves.
All perfectly reasonable business decisions. But where the cash physically sits is not necessarily what determines the U.S. tax result. Your ownership in the foreign corporation and the corporation's financial activity can matter.
GILTI Is Not Simply “Profit × Ownership Percentage”
Suppose the company made $1 million and you own 70%. It would be tempting to say $1,000,000 × 70% = $700,000 of GILTI. That is not necessarily how the actual calculation works.
GILTI calculations involve specialized international tax concepts and can depend on tested income, tested losses, deductions, foreign income taxes, qualified business assets, interest expense, ownership percentages, other CFCs, and applicable deductions and elections.
The important takeaway is this: if you are a U.S. shareholder of a CFC, the company's financial statements need to be reviewed for potential U.S. international tax consequences.
What If I Own More Than One Foreign Company?
Now imagine you own a manufacturing company in Mexico, a separate real estate company that owns the facility, a transportation company, and a holding company.
Some companies are profitable. Another has a loss. One paid significant foreign income tax. Another operates on thin margins.
The international tax calculation can become much more involved. You cannot necessarily look at one entity in isolation and assume you know the final U.S. result. This is why international tax preparation often requires complete financial information for every relevant foreign entity.
“But I Already Paid Mexican Taxes.”
Imagine the Mexican company earns a profit and pays substantial Mexican income tax. Then your U.S. CPA tells you there is a GILTI calculation. Naturally, you ask: “Am I going to pay tax twice?”
The U.S. tax system contains foreign tax credit mechanisms intended to address certain situations involving foreign taxes. However, their availability and use depend heavily on the taxpayer, type of income, corporate structure, elections, limitations, and other circumstances.
A U.S. individual owning a CFC directly can face a different tax analysis than a U.S. domestic corporation owning the same foreign company.
Section 962: Why Individual Foreign Business Owners Should Know the Name
For certain individual U.S. shareholders, Section 962 can become an important planning consideration.
A Section 962 election can allow an individual, for certain purposes, to be taxed in a manner that incorporates aspects of the corporate tax treatment of certain CFC income. Among other considerations, it can affect the rate applied to certain inclusions and the treatment of certain foreign taxes.
But Section 962 is not a magic button. It is not something every foreign business owner should automatically elect. There can also be consequences when the foreign corporation later distributes its earnings.
The current-year benefit should be analyzed together with the potential future consequences.
Saving Tax Today Is Not the Only Question
Suppose making a particular election reduces your current U.S. tax. That sounds great—but what happens three years later when the Mexican company distributes $500,000?
International tax planning should not focus exclusively on the current-year tax return. We also need to ask what happens when earnings are distributed, the company is sold, ownership changes, the shareholder moves, or the next generation inherits the business.
A good international tax strategy looks beyond April 15.
What About Subpart F Income?
GILTI is not the only anti-deferral regime that can affect CFC shareholders. Subpart F income has existed for decades.
Certain types of income earned by a CFC can potentially be included in a qualifying U.S. shareholder's income under Subpart F rules. The categories and calculations are technical and can include certain passive income and certain related-party transactions, among other items.
This is why your CPA needs more than a single number labeled “net income.” We need to understand how the company earned its money.
The Financial Statements Tell the Story
For U.S. international tax purposes, your foreign company's financial statements can become extremely important.
Your U.S. CPA may need the income statement, balance sheet, general ledger, trial balance, fixed asset information, foreign tax returns, details of foreign income taxes, related-party transactions, shareholder loans, dividends, capital contributions, ownership changes, and intercompany transactions.
If your foreign accountant simply sends one number—“The company made $800,000”—that may not be enough. International tax calculations frequently require the underlying details.
Your Mexican Accountant and U.S. CPA Need to Communicate
Your Mexican accountant may prepare the books perfectly under Mexican accounting and tax requirements, while your U.S. CPA may need information presented differently for U.S. international tax reporting.
The U.S. CPA may need to identify specific taxes, transactions, ownership changes, related parties, or balance-sheet items that are not obvious from a high-level financial statement.
That does not mean one accountant is right and the other is wrong. They are working under different tax systems. The best result often comes when both sides communicate.
What Does Form 5471 Have to Do With GILTI?
If you are a U.S. person with a qualifying ownership interest in a foreign corporation, Form 5471 may be required.
Form 5471 can include information about ownership, financial statements, income, earnings and profits, related-party transactions, foreign taxes, Subpart F, GILTI-related information, previously taxed earnings, and other international tax attributes.
This is one reason Form 5471 should not be viewed as a simple disclosure form. For a CFC, it can become a detailed annual record of the company's U.S. international tax history.
“What If My Foreign Company Lost Money?”
Not every foreign company makes money every year. Imagine you own two CFCs. Company A earns $500,000 and Company B loses $200,000. Does Company B's loss matter? Potentially.
The interaction of tested income and tested losses can be relevant in the GILTI calculation, subject to the applicable rules. But losses can also create complications.
This is another reason international tax planning should consider the entire group of foreign companies and not simply analyze each entity independently.
What If I Only Own 20%?
Do not assume GILTI is only a problem for people who own 100% of a foreign company.
Imagine five shareholders each own 20%, and several are U.S. persons. Whether the foreign corporation is a CFC and whether a particular shareholder is subject to applicable reporting and income inclusion rules depends on the ownership structure and relevant direct, indirect, and constructive ownership rules.
This is why we ask for a complete shareholder list, including ownership percentages, which shareholders are U.S. persons, ownership through other entities, relationships among shareholders, and changes during the year.
What If My Spouse Owns the Other Half?
Imagine you own 50% of a Mexican corporation and your spouse owns the other 50%. You might think, “Neither of us owns more than 50%.”
But international tax ownership rules can involve attribution and related-party concepts. The ownership structure needs to be analyzed under the specific rules that apply.
Married taxpayers with foreign businesses should not assume that splitting ownership automatically avoids CFC or Form 5471 issues.
What If I Leave All the Money in the Company for Ten Years?
This is where recordkeeping becomes critical.
Imagine the company earns profits every year. Some income is included in your U.S. taxable income under CFC rules, but the company does not distribute the cash. Years later, the company finally pays a large dividend.
We now need to determine whether some of that distribution relates to earnings that were already taxed to you in the United States. This brings us to previously taxed earnings and profits, often abbreviated PTEP.
The basic concept is logical: if certain foreign corporate earnings were already included in your U.S. taxable income before they were distributed, rules are needed to track those amounts when the cash is eventually paid. Accurate annual international tax records matter.
Imagine Trying to Reconstruct This Ten Years Later
The company was profitable in 2026. It had a loss in 2027. It paid a dividend in 2028. Ownership changed in 2029. You made a Section 962 election in one year but not another. Foreign taxes changed. Another CFC was acquired.
Then in 2036 you decide to sell the company, but your CPA has none of the prior calculations.
International tax compliance creates a history. Each year can affect the next.
The Best Time to Ask About GILTI Is Before Year-End
If we first discuss GILTI while preparing your tax return after the year has ended, many business decisions have already been made. The company already earned its income, expenses have been incurred, dividends may or may not have been paid, ownership changes have happened, and related-company transactions have occurred.
Tax planning is much more effective when we can look forward. For someone with a significant foreign business, international tax planning should be an ongoing conversation rather than a once-a-year surprise.
Don't Let the Name “GILTI” Distract You
You do not need to memorize the GILTI formula or understand every international tax code section.
You need to understand one basic idea: if you are a U.S. taxpayer who owns part of a foreign company, the fact that the company did not pay you a dividend does not automatically mean there is nothing to report or nothing taxable in the United States.
That one concept can prevent a lot of problems.
The hardest part of GILTI for many business owners to understand is simple: you can potentially have U.S. taxable income even when your foreign company never gave you the money.
If you're a U.S. citizen or U.S. tax resident who owns a foreign company, don't wait until you receive a dividend to talk to your CPA. Have the ownership and company financials reviewed every year.
You don't need to understand every GILTI calculation yourself. You just need to make sure someone who understands international tax is looking at the complete picture.