Court Denied Foreign Tax Credit for Investment Income

The Federal Circuit ruled that taxpayers cannot use foreign tax credits to offset the net investment income tax.

Updated on Sept. 18, 2026 in Taxes

Bold flat-color editorial illustration of a brass balance scale on a stone pedestal, symbolizing a formal judicial ruling. — The U.S. Court of Appeals for the Federal Circuit ruled that taxpayers cannot apply foreign tax credits to offset net investment income taxes. AI Illustration. Upload story photo >

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Should taxpayers be allowed to apply foreign tax credits against domestic net investment income taxes?

The U.S. Court of Appeals for the Federal Circuit has ruled that foreign tax credits cannot be used to reduce the net investment income tax under I.R.C. §1411. This decision impacts U.S. citizens who pay income taxes to foreign governments on investment gains.

Why it matters

The ruling clarifies how taxpayers must navigate tax liabilities when they owe money on the same investment gains in two different countries. It prevents the use of foreign tax credits to lower the specific net investment income tax, potentially increasing the total tax burden for households with international holdings.

The ruling clarifies the application of I.R.C. §1411 regarding the net investment income tax. It remains unknown how this precedent might apply to tax treaties with countries other than France.

The players

U.S. Court of Appeals for the Federal Circuit

A federal court that hears appeals on cases regarding tax laws and international trade.

Federal Court of Claims

The lower court whose previous decision in favor of the taxpayers was reversed by the appellate ruling.

The details

The dispute involved U.S. citizens residing in France who paid income tax to both countries on stock gains. They attempted to use Article 24 of a U.S.-France tax treaty to claim a credit against the U.S. net investment income tax. The court reversed a prior decision, confirming that foreign tax credits cannot offset this specific tax liability.

The U.S. Court of Appeals issued the ruling on September 18, 2026.

Money Landscape

This decision settles a legal dispute regarding the interplay between international tax treaties and the net investment income tax under I.R.C. §1411. It provides a clearer boundary for taxpayers evaluating their cross-border tax liabilities.

If you hold foreign assets and pay taxes to other jurisdictions, this ruling may affect your total U.S. tax liability on investment gains. You should consult a qualified tax professional to review how your current tax filings align with this new judicial interpretation.

The takeaway

The Federal Circuit has limited the ability to use foreign credits to offset the net investment income tax. Review your international tax strategy with a qualified tax professional to understand your updated exposure.