You Inherited Shares of a Foreign Company—Now What Does the IRS Expect?

You did not start the company. You did not buy the shares. You may not even receive money from the business. But inheriting ownership in a foreign company can still create important U.S. tax and reporting requirements.

Imagine this.

Your father spent 30 years building a successful family business in Mexico. The company owns its building, employs dozens of people, has customers throughout Mexico, and has always filed and paid its taxes in Mexico.

You moved to the United States years ago. Then your father passes away.

As part of the inheritance, you receive 30% ownership of the Mexican company.

You did not invest any money into the business. You do not work there. Your brother runs the company from Mexico. The company does not send you a dividend. No money is transferred into your U.S. bank account.

From your perspective, very little has changed financially. You simply inherited part of your family's company.

Then tax season arrives and your CPA asks: “Did you inherit any property or assets outside the United States?” You answer yes. Then comes the next question: “Did that inheritance include ownership in a foreign company?”

Suddenly, what seemed like a straightforward inheritance becomes an international tax conversation.

When a U.S. citizen or U.S. tax resident inherits ownership in a foreign business, there can be multiple issues to analyze. The inheritance itself, acquisition of the shares, percentage now owned, company ownership structure, future income, distributions, foreign financial accounts, and international information-reporting requirements may all need to be considered.

The important point is simple: you do not have to purchase a foreign company to create a U.S. reporting requirement. Receiving ownership through an inheritance can matter too.

Start With the Most Important Question: Who Is Receiving the Inheritance?

Before looking at the company, we first need to look at you.

Are you a U.S. citizen? Are you a lawful permanent resident? Are you otherwise considered a U.S. resident for federal income tax purposes?

This matters because U.S. citizens and U.S. resident aliens are generally subject to U.S. taxation on worldwide income and can also be subject to extensive reporting requirements involving foreign assets and entities.

Imagine two children inherit shares of the same Mexican company. One has always lived in Mexico and is not a U.S. person. The other moved to Texas, obtained permanent residency, and files a U.S. Form 1040.

They inherited the same type of asset from the same parent, but their U.S. reporting situations may be completely different.

“But It Was an Inheritance. I Didn't Earn It.”

Correct—and that distinction matters.

Receiving an inheritance is not the same thing as earning business income. But international tax reporting frequently involves more than determining whether a particular receipt is taxable income.

The United States has separate information-reporting requirements that can apply to certain foreign gifts, bequests, assets, accounts, corporations, partnerships, and trusts.

That means we may need to answer two separate questions: Is receiving the inheritance itself taxable? And does receiving or owning the inherited foreign asset create a reporting requirement?

Those are not always the same question. Something can be non-taxable and still be reportable.

You May Need to Tell the IRS About the Foreign Inheritance

Suppose your father was not a U.S. person and you received a significant inheritance from him.

Certain U.S. persons who receive large gifts or bequests from foreign persons may have a reporting requirement on Form 3520.

Form 3520 is an information return used for several types of foreign transactions, including certain transactions involving foreign trusts and the receipt of certain large gifts or bequests from foreign persons.

This does not automatically mean the inheritance is subject to U.S. income tax. But if a reporting requirement exists, failing to recognize it can create a separate compliance problem.

This is why telling your CPA, “I inherited some shares in Mexico,” is much more useful than simply saying, “I didn't have any additional income this year.”

Now We Need to Look at What You Actually Inherited

Let's go back to our example.

Your father owned 80% of a Mexican corporation. After his death, his ownership is divided among his children. You receive 30%, your brother receives 30%, your sister receives 20%, and another shareholder continues to own the remaining 20%.

Before the inheritance, you owned nothing. After the inheritance, you own 30%.

That change can matter for U.S. international information reporting.

For certain U.S. taxpayers with ownership interests in foreign corporations, Form 5471 may become relevant. Acquiring a significant ownership interest can itself be important when determining the applicable filing category.

Why 10% Can Be an Important Number

One ownership threshold that comes up frequently in foreign corporation reporting is 10%.

For various international tax provisions, ownership measured by voting power or value can affect whether a U.S. person falls within particular reporting rules.

Imagine you inherit 5% of the company. Now imagine instead that you inherit 15%, 30%, or 60%. Those are very different ownership positions.

That is why we do not simply ask, “Did you inherit a foreign company?” We ask exactly what percentage you owned before the inheritance, what percentage you acquired, and what percentage you owned afterward.

What If You Already Owned Part of the Company?

Suppose you already owned 7% of the Mexican family business. After your father's death, you inherit another 8%. You now own 15%.

You might think, “I only inherited 8%.” But your CPA may need to consider your total ownership after the transaction, not simply the percentage inherited.

The same concept can apply when shares are purchased, sold, gifted, inherited, or transferred through a family restructuring. With foreign corporations, how you arrived at your ownership percentage can matter just as much as the final percentage itself.

Direct Ownership Is Not Always the Entire Story

International tax rules can also contain attribution rules.

Suppose you directly own 30% of a foreign company. Your spouse owns another portion. Your children own shares. A partnership you own has an interest. Another corporation in your structure owns additional shares.

Depending on the specific provision being analyzed, direct, indirect, and constructive ownership rules may need to be considered.

This becomes particularly important in family-owned foreign businesses because ownership is often spread among parents, children, siblings, spouses, holding companies, and other family entities.

Could the Company Become a Controlled Foreign Corporation?

Now imagine that several members of the family are U.S. taxpayers.

You own 30%. Your sister, who also lives in Texas and is a U.S. citizen, owns 20%. Another qualifying U.S. shareholder owns 15%.

Collectively, U.S. ownership may now become significant enough that the company needs to be analyzed under the Controlled Foreign Corporation, or CFC, rules.

A CFC is not a bad company and does not mean the company did anything wrong. It is simply a classification under U.S. international tax law.

Generally speaking, CFC status involves more than 50% ownership by qualifying U.S. shareholders, measured under the applicable vote or value and ownership rules.

Once a foreign corporation becomes a CFC, additional U.S. tax rules can potentially come into play for certain U.S. shareholders.

“I Don't Receive Any Money From the Company.”

Imagine you inherited 30% of the family company. The business earns a significant profit this year, but your brother decides the company should retain all of its earnings.

No dividends are paid. You receive nothing. Your U.S. bank account does not increase by one dollar.

So you assume there is nothing to report as income.

Depending on the company's status and your ownership, that assumption may not always be correct.

Certain U.S. international tax rules can potentially cause U.S. shareholders of CFCs to recognize income even when the foreign company has not distributed the corresponding cash. This is where concepts such as Subpart F income and GILTI can become relevant.

GILTI Can Matter Even When the Business Is a Normal Operating Company

GILTI stands for Global Intangible Low-Taxed Income.

Despite the name, it is not limited to companies with patents, software, trademarks, or other intellectual property.

A normal operating foreign business can potentially create GILTI consequences for qualifying U.S. shareholders.

Imagine the Mexican family company manufactures commercial equipment. It has a factory, employees, inventory, customers, equipment, and accounts receivable. It earns a profit and pays Mexican taxes.

You inherited shares and receive no cash distribution. Yet the company's financial activity may still need to be analyzed for U.S. GILTI purposes if the applicable CFC rules are met.

You may have inherited an asset, but you may also have inherited an ongoing international tax compliance responsibility.

What Happens When the Company Eventually Pays You a Dividend?

Imagine five years pass. The company has been profitable and has accumulated cash. The shareholders finally decide to distribute money, and you receive a $100,000 dividend.

Is the entire $100,000 automatically taxable again in the United States? Not necessarily.

If amounts were previously included in your U.S. taxable income under certain CFC rules, later distributions can involve rules dealing with previously taxed earnings and profits, commonly referred to as PTEP.

This is where recordkeeping becomes extremely important. Your CPA may need historical information about earnings, prior U.S. inclusions, distributions, foreign taxes, and shareholder basis.

A foreign corporation can create tax attributes that carry from one year to another, which is why consistent reporting matters.

What Is Your Tax Basis in Inherited Foreign Shares?

Another important issue is your basis in the shares.

Basis is essentially a tax measurement of your investment in an asset and can become very important when you eventually sell the shares.

Inherited property can be subject to special basis rules. International situations can introduce additional questions, including the identity and U.S. tax status of the person who died, how and where the property was held, the date-of-death value, and whether other special rules apply.

If you inherit shares in a private Mexican company, determining what those shares were worth when you inherited them may not be easy. There may be no public market and no prior formal valuation.

Years later, reconstructing that value can become a major challenge. That is why valuation and basis documentation should be considered when the inheritance occurs—not only when the shares are eventually sold.

What If You Eventually Sell the Mexican Company?

Imagine you inherit 30% of the company at age 40. At age 55, the family receives an offer to sell the entire business, and your portion of the proceeds is $2 million.

Now your historical records become extremely important.

Your U.S. tax professional may need to determine your basis, holding period, historical adjustments, foreign taxes, and other items. There may also be Mexican tax consequences from the sale.

The U.S. and Mexican consequences need to be considered together. Waiting until the closing date to reconstruct 15 years of foreign-company history is not ideal.

Foreign Bank Accounts Can Create Another Layer of Reporting

Maybe you inherited more than company shares. Perhaps you also inherited a Mexican bank account, or becoming a shareholder gave you signature authority over company accounts.

Now another international reporting regime may enter the conversation: the FBAR.

Generally, a U.S. person may have an FBAR filing requirement when the aggregate value of qualifying foreign financial accounts in which the person has a financial interest or signature authority exceeds $10,000 at any time during the calendar year, subject to applicable rules and exceptions.

Form 8938 may also need to be considered depending on the taxpayer's foreign financial assets and applicable thresholds.

One foreign inheritance can therefore raise several different questions: Was Form 3520 required? Is Form 5471 required? Does Form 8938 apply? Is there an FBAR requirement? Does the company qualify as a CFC? Is there Subpart F income or a GILTI inclusion? Are foreign tax credits available?

This is why international tax should be approached as a complete picture rather than as a checklist of isolated forms.

What If the Company Is Not a Corporation for U.S. Tax Purposes?

Another common mistake is assuming that because an entity is treated one way in Mexico, the United States must treat it the same way.

Foreign entity classification needs to be analyzed under U.S. federal tax rules.

If the inherited business is treated as a foreign corporation, Form 5471 may become relevant. If it is treated as a foreign partnership, Form 8865 may need to be considered instead. If the inheritance involves a foreign trust, a different set of reporting rules may apply.

The legal name appearing on a Mexican document is important, but it does not always answer the U.S. tax-classification question by itself.

What If the Company Owns Real Estate?

Family companies frequently own more than an operating business.

Imagine the Mexican corporation owns a warehouse in Monterrey, rental properties, land purchased decades ago, an office building, investment accounts, or shares in other companies.

Now the structure has multiple layers.

The U.S. tax analysis may need to consider not only the company you inherited but also what that company owns.

Organizational charts can be extremely useful. Instead of looking at documents one at a time, we can visualize: You → Mexican Holding Company → Operating Company → Real Estate Company.

That tells a much more complete story than simply saying, “I inherited a Mexican corporation.”

What If Your Family Says, “The Mexican Accountant Handles Everything”?

Your Mexican accountant may be doing exactly what they are supposed to do: preparing Mexican financial statements, filing Mexican tax returns, and calculating Mexican taxes.

But that does not necessarily mean they are responsible for your U.S. international information reporting.

Your Mexican accountant is looking at the business from the Mexican side. Your U.S. CPA needs to look at the same company from the U.S. side.

The best situation is when those professionals communicate. Your U.S. CPA may need financial information, ownership details, foreign taxes, dividends, loans, capital contributions, and related-party transactions from the Mexican accountant.

The goal is not to replace the foreign accountant. The goal is to connect the two tax systems.

What Should You Do When You Inherit a Foreign Company?

The best time to start gathering information is when the inheritance happens.

Identify exactly what you received. Obtain the company's organizational documents. Determine the percentage you inherited and identify the other shareholders. Document the acquisition date and whether you already owned shares. Obtain financial statements and prior-year company information. Consider the value of the inherited interest. Identify company and personal foreign financial accounts.

Most importantly, tell your U.S. tax professional about the inheritance before your tax return is prepared.

Do not assume: “I didn't receive cash, so there is nothing to report.” That assumption can create international tax problems.

Inheriting a Business Is Different From Inheriting Cash

If someone leaves you $100,000 in cash, you know exactly what you received.

A foreign business is different because it continues operating after you receive it. The company can earn income, accumulate profits, pay dividends, borrow money, make loans to shareholders, transact with related companies, acquire other businesses, open bank accounts, sell property, and eventually be sold.

Your ownership creates an ongoing relationship with that company.

For a U.S. taxpayer, that relationship may need to be evaluated every year. That is why the tax conversation should not end once the inheritance itself is reported.

The Biggest Mistake Is Waiting Until There Is a Problem

Imagine discovering the issue ten years later.

You inherited the company in 2026. It is now 2036. The company has grown substantially. You have received several distributions. Ownership percentages have changed. Other family members moved to the United States. The company purchased real estate. There were loans between shareholders and the business.

Nobody ever addressed your U.S. foreign-company reporting.

Now you are trying to reconstruct ten years of history.

Compare that with identifying the reporting requirements in the first year, maintaining the records annually, and documenting ownership changes as they occur.

With international tax, getting organized early can make an enormous difference.