Does California Tax a Foreign Inheritance? The Expensive Catch

Does California Tax Foreign Inheritances? The Short Answer (and the Expensive Catch)

California residents who inherit assets from abroad owe no state inheritance tax and typically no federal income tax on the inheritance itself. That sounds clean. It isn't. The real exposure on foreign inheritance tax in California comes from federal reporting obligations, ongoing income taxation of inherited assets, and a penalty regime that can cost you $1.75 million for a paperwork failure on a $5 million bequest. Understanding your tax obligations before assets transfer is not optional at this level.

Does California Have an Inheritance Tax on Foreign Assets?

California abolished its state inheritance tax in 1982 and has no estate tax either. For a California resident inheriting from a foreign decedent, the state does not tax the inheritance event itself, regardless of asset size or country of origin.

That said, the California Franchise Tax Board requires residents to report all worldwide income on Form 540, which means any income generated by inherited foreign assets after the date of death is fully taxable at California's top marginal rate of 13.3%, the highest state income tax rate in the country. Rental income from an inherited Paris apartment, dividends from a German brokerage account, or capital gains when you eventually sell inherited foreign real estate all flow through to your California return.

This distinction matters enormously. California does not tax the inheritance. California does tax everything the inheritance earns afterward, with no foreign tax credit mechanism as generous as the federal system. A $10 million portfolio of European income-producing real estate might generate $400,000 to $600,000 in annual income, all of which faces California's 13.3% rate on top of federal tax.

For California's property inheritance laws specifically, the analysis adds another layer. Inherited California real estate triggers Prop 19's impact on inherited property, which significantly narrowed the parent-child property tax exclusion starting in 2021. Foreign-sited real estate avoids Prop 19 entirely, but California will still tax any rental income or gain on sale.

What IRS Forms Are Required When a California Resident Inherits Money from Abroad?

This is where most high-net-worth inheritors get into trouble, and the consequences are severe enough to warrant treating compliance as the primary financial risk, not the tax itself.

Form 3520: The $100,000 Threshold

According to the IRS, U.S. persons who receive more than $100,000 in gifts or bequests from a nonresident alien or foreign estate in a tax year must report the receipt on Form 3520. No federal income tax is owed on the inheritance itself, but the form is mandatory. The penalty for failure to file: 35% of the gross reportable amount, assessed automatically.

On a $5 million foreign bequest, that is a $1.75 million penalty for a paperwork failure on a tax-free event.

Form 3520 is due by the tax return due date (including extensions) for the year in which the inheritance was received. If you inherited in 2024, the deadline is October 15, 2025, assuming you file for an extension.

Form 3520-A: If You Inherit Through a Foreign Trust

If the inheritance passes through a foreign trust rather than directly from an estate, the IRS requires U.S. owners of foreign trusts to file Form 3520-A annually. This form reports the trust's income, assets, and distributions. Penalties for failure to file reach 5% of the trust's gross assets, assessed each year the form is missing.

Form 8938 (FATCA) and FBAR

Two additional filings apply to inherited foreign financial accounts. FATCA Form 8938 requires reporting foreign financial assets exceeding $600,000 for married couples filing jointly (or $300,000 for single filers) at year-end, or $400,000 at any point during the year. Separately, FinCEN Form 114 (FBAR) requires any U.S. person who inherits foreign financial accounts with an aggregate value exceeding $10,000 at any point during the calendar year to file with FinCEN. Willful FBAR violations carry penalties up to the greater of $100,000 or 50% of the account balance per violation.

What Is the Reporting Threshold for Foreign Inheritances Under IRS Form 3520?

The $100,000 threshold applies to the aggregate value of all bequests and gifts received from a single foreign estate or nonresident alien during the tax year. If you receive $60,000 in cash and $80,000 in securities from the same foreign estate, you are over the threshold and Form 3520 is required.

One structural note: the IRS does not treat the inheritance as taxable income. Per IRS Publication 559, income earned by inherited foreign assets after the date of death, such as dividends, rent, or interest, is taxable as ordinary income to the U.S. beneficiary. The inheritance itself is not. That distinction is what makes the Form 3520 penalty so jarring: you can owe zero tax and still face a seven-figure penalty.

For California residents navigating international estate complexities, the compliance calendar is the first document your tax attorney should build after you receive notice of a foreign inheritance.

What Happens If You Inherit a Stake in a Foreign Corporation? PFIC Rules Explained

This is the most underestimated tax trap in international inheritance planning, and it directly affects anyone inheriting a diversified European or Asian portfolio.

Inheriting shares in a foreign investment fund, which is extremely common for beneficiaries of estates in Germany, France, the UK, Japan, or most of Asia, almost always triggers Passive Foreign Investment Company (PFIC) status under IRC Sections 1291 through 1298. The default excess distribution regime taxes gains at the highest ordinary income rate (37% federally) plus an interest charge on deferred gains, rather than the preferential 20% long-term capital gains rate.

On a $2 million inherited foreign fund position, that difference can represent a tax bill 85% higher than a comparable U.S. fund inheritance.

U.S. beneficiaries who inherit PFIC shares must file Form 8621 with their annual return. There is no de minimis exception. The IRS's instructions for Form 8621 make clear that each PFIC holding requires a separate form, and failure to file suspends the statute of limitations on the entire tax return.

Mitigation options exist but require prompt action:

• QEF election (Qualified Electing Fund): Requires the foreign fund to provide annual information statements. Many foreign funds will not cooperate, making this election unavailable in practice.
• Mark-to-market election: Treats the PFIC shares as if sold at year-end, recognizing gains and losses as ordinary income. This eliminates the interest charge but creates annual taxable events.
• Liquidation at stepped-up basis: Under IRC Section 1014, foreign assets inherited by a U.S. person generally receive a stepped-up cost basis to fair market value at the date of the decedent's death. If you liquidate the PFIC position immediately after inheriting it, the gain above the stepped-up basis may be minimal, and the PFIC tax regime applies only to appreciation after the inheritance date.

The stepped-up basis rule is one of the most valuable provisions available to U.S. inheritors of foreign assets. Coordinate with your tax counsel on the timing of any sales.

How Does FBAR Reporting Apply to Inherited Foreign Bank Accounts?

The FBAR obligation attaches the moment you have signature authority or a financial interest in foreign accounts with an aggregate value exceeding $10,000. Inheritance creates that financial interest on the date of transfer.

If a foreign executor transfers a €500,000 account to you on March 15, your FBAR obligation for that calendar year is already triggered. The filing deadline is April 15, with an automatic extension to October 15. There is no election to delay the obligation.

Willful failure to file carries penalties up to the greater of $100,000 or 50% of the account balance per violation. Courts have upheld per-account penalties, meaning a $2 million inheritance spread across four foreign accounts could theoretically generate $1 million in annual penalties for willful non-filing.

The practical implication: notify your tax attorney the day you receive notice of a foreign inheritance, not after the estate settles.

The 2025 Estate Tax Sunset: Why This Year's Planning Window Matters

The Tax Cuts and Jobs Act doubled the federal estate tax exemption, which sits at $13.61 million per individual in 2024. Without Congressional action, that exemption reverts to approximately $7 million per individual (adjusted for inflation) on January 1, 2026, according to the Tax Policy Center.

For FATFIRE readers with estates above $7 million who are also beneficiaries of foreign estates, this creates a dual planning problem. Your own estate plan needs to act before the sunset, while you are simultaneously integrating a potentially large foreign inheritance into your balance sheet.

Structures worth discussing with your estate attorney before year-end 2025:

• Spousal Lifetime Access Trusts (SLATs): Allow a married couple to effectively shelter up to $27.22 million at current exemption levels before the sunset, while retaining indirect access through the beneficiary spouse.
• Accelerated gifting: Using the current exemption to make large gifts to irrevocable trusts before December 31, 2025. The IRS has confirmed that gifts made under the higher exemption will not be clawed back if the exemption later decreases.
• Qualified Domestic Trusts (QDOTs): When a U.S. citizen inherits from a non-citizen spouse, assets must be held in a Qualified Domestic Trust to qualify for the marital deduction and defer estate tax. This is a critical planning consideration for California residents with international family structures, and the QDOT rules under IRC Section 2056A are not forgiving of administrative errors.

How Can High-Net-Worth Individuals Minimize Taxes on a Large Foreign Inheritance?

The planning strategies available at the $5 million-plus level are meaningfully different from what general-audience articles describe. Here is what actually moves the needle.

Dynasty Trusts in Tax-Favorable States

California has no rule against perpetuities, but it does have a 13.3% income tax rate that applies to trust income if the trustee or a beneficiary is a California resident. Dynasty trusts established in South Dakota or Nevada, which have no rule against perpetuities and strong asset protection laws, can receive and hold foreign inherited assets in a structure that avoids repeated estate taxation across generations.

If properly structured and administered outside California, with an independent trustee in the trust situs state, these trusts can potentially remove assets from California's income tax reach. The analysis is fact-specific and contested, but the planning opportunity is real for large, long-duration holdings.

Charitable Remainder Trusts (CRTs)

For inherited foreign assets with significant embedded gain, a CRT allows you to contribute the asset, receive an income stream for a term of years or life, take a partial charitable deduction, and defer the capital gains tax on sale within the trust. This works particularly well for inherited foreign real estate or concentrated foreign equity positions where immediate sale would trigger substantial gain.

Stepped-Up Basis Optimization

As noted above, IRC Section 1014 provides a stepped-up basis to fair market value at the decedent's death for inherited foreign assets. This is often the single most valuable tax attribute of a foreign inheritance. Proper documentation of the date-of-death value, in the foreign currency with a contemporaneous exchange rate, is essential. Inadequate documentation is a common audit trigger.

For global estate planning strategies involving multiple jurisdictions, the interaction between the U.S. stepped-up basis rules and foreign inheritance tax regimes requires country-specific analysis.

Treaty Planning

The United States has estate and gift tax treaties with only a limited number of countries, including Australia, France, Germany, Japan, and the United Kingdom, according to the IRS. Most foreign inheritances received by California residents are not protected from double taxation by treaty. Where a treaty does apply, it typically provides credits rather than exemptions, meaning you pay the higher of the two countries' rates, not both.

For countries with no inheritance tax, the double-taxation concern disappears at the source, but U.S. reporting obligations remain unchanged.

Tax Treatment of Inherited Foreign Assets: A Comparison

Understanding how the IRS treats different foreign asset classes helps prioritize where to focus planning attention.

Capital Gains Tax on Inherited Foreign Property

When you eventually sell inherited foreign real estate or securities, the capital gains tax on foreign property calculation starts from the stepped-up basis at the date of death, not the decedent's original purchase price. That is the good news.

The complications come in layers. First, the gain must be calculated in U.S. dollars using exchange rates at both the inheritance date and the sale date, meaning currency fluctuation creates taxable gain or loss independent of the asset's actual performance. Second, California taxes the full gain at ordinary income rates for assets held less than one year and at the same rate as federal long-term capital gains for assets held longer, with no preferential rate at the state level.

Third, if the foreign country also taxes the gain on sale, the U.S. foreign tax credit may offset some of the federal liability, but California's foreign tax credit is more limited. For US inheritance tax rules for non-residents who are the source of the inheritance, FIRPTA withholding rules may also apply to U.S.-sited real property held in the foreign estate, requiring 15% withholding at closing.

The practical implication: before selling any inherited foreign asset, model the full tax stack across federal, California, and source-country obligations. The optimal timing and structure of the sale often differs significantly from what feels intuitive.

Building the Right Advisory Team

Foreign inheritance tax in California sits at the intersection of federal estate tax, international tax treaties, California income tax, and foreign country law. No single advisor covers all of it well.

The minimum team for a foreign inheritance exceeding $1 million:

• A U.S. international tax attorney with specific experience in cross-border estate administration
• A CPA with international tax practice (Form 3520, FBAR, PFIC, and Form 8938 experience)
• Local counsel in the country where the estate is being administered
• A California-licensed estate planning attorney if the inheritance will be integrated into your existing estate plan before the 2025 exemption sunset

Your private banker can coordinate custody and transfer of foreign financial assets, but the compliance architecture needs to be in place before assets move. Retroactive compliance is available through IRS programs, but it is expensive, time-consuming, and draws scrutiny.

The core insight for understanding your tax obligations on a foreign inheritance: the tax bill is often manageable. The penalty exposure for non-compliance is not.

References

• Internal Revenue Service -- "Instructions for Form 3520: Annual Return To Report Transactions With Foreign Trusts and Receipt of Certain Foreign Gifts" (2024)
• Internal Revenue Service -- "[Instructions for Form 3520-A: Annual Information Return of Foreign Trust With a U.S.

Owner](https://www.irs.gov/forms-pubs/about-form-3520-a)" (2024)

• Internal Revenue Service -- "Publication 559: Survivors, Executors, and Administrators" (2024)
• Internal Revenue Service -- "FinCEN Form 114 (FBAR): Report of Foreign Bank and Financial Accounts" (2024)
• Internal Revenue Service -- "IRC Section 2056A: Qualified Domestic Trusts"
• Internal Revenue Service -- "Instructions for Form 8621: Information Return by a Shareholder of a Passive Foreign Investment Company or Qualified Electing Fund" (2024)
• Internal Revenue Service -- "Estate and Gift Tax: United States Estate Tax Treaties"
• California Franchise Tax Board -- "California Resident Income Tax Return Instructions (Form 540)" (2024)
• Internal Revenue Code -- "IRC Section 1014: Basis of Property Acquired from a Decedent"
• Tax Policy Center (Urban Institute & Brookings Institution) -- "How does the federal estate tax work?" (2024)