Cross-Border Estate Settlement in France: UK, US, and Dual Nationality Issues

Two Countries, Two Legal Systems, One Estate

When someone with assets in both France and another country dies, the estate doesn't settle in one clean process. French assets are governed by French procedural requirements regardless of the deceased's nationality, and the home country handles its own assets under its own rules. The two systems don't automatically talk to each other.

A British citizen who owned a cottage in the Dordogne and a house in Surrey triggers two parallel proceedings: a French notaire handles the French property and French bank accounts, while a UK solicitor obtains probate and manages UK assets. Neither professional has authority in the other's jurisdiction.

The US-France Dynamic

The US-France estate tax treaty (1978) allocates taxing rights to prevent double taxation. Real property is taxed where it's located — French property is taxed in France, US property in the US. Other assets (bank accounts, securities) are generally taxed where the deceased was domiciled.

In practice, the coordination still requires professional management. The French notaire files the déclaration de succession covering French assets. The US executor files IRS Form 706 (estate tax return) for the worldwide estate, claiming a foreign tax credit for French taxes paid.

The filing deadline mismatch creates pressure: France requires the déclaration de succession within 6 months of death (or 12 months if the death occurred outside France), while the US Form 706 is due within 9 months (with extensions available).

The UK-France Challenge

The UK and France have no inheritance tax treaty. This means the same assets can theoretically be taxed in both countries. In practice, both countries offer unilateral relief — you can credit tax paid in one country against the liability in the other — but the mechanics are complicated and the relief isn't always complete.

UK Inheritance Tax (IHT) applies to the worldwide estate of UK-domiciled individuals, including French property. French droits de succession apply to French-situated assets regardless of domicile. A French property worth €400,000 could face both French inheritance tax (up to 45% for children after the €100,000 allowance) and UK IHT (40% above the nil-rate band).

The UK's Double Taxation Relief (Unilateral) regulations allow French tax paid to be credited against UK IHT on the same assets, which usually prevents actual double taxation — but the calculations require a specialist who understands both systems.

Dual Nationality Complications

Dual nationals face the question of which law governs their succession. Under Brussels IV, the deceased can elect either nationality's law in their will. If no election was made, the default is the law of the country of habitual residence at death.

A British-French dual national living in France who made no will election has their entire estate governed by French law — including forced heirship. If they'd elected English law, they could have bypassed forced heirship entirely (subject to the 2021 compensatory levy provisions).

For US-French dual nationals, the election is to the law of one specific US state, not "US law" generically. The choice of state matters because forced heirship rules vary (Louisiana has them; most other states don't).

Practical Coordination

The key to managing a cross-border estate is early engagement of professionals in both jurisdictions. The French notaire and the UK solicitor (or US attorney) need to coordinate on asset valuation, tax filing, and the timing of distributions.

Documents flow between jurisdictions constantly — the French acte de décès needs apostilling and translating for UK/US use, while UK grant of probate or US Letters Testamentary may need legalizing for French institutions.

Budget for this: cross-border estate settlement typically costs 3-5% of the total estate value in combined professional fees, versus 1-2% for a single-jurisdiction estate.

The Someone Died in France: English Speaker's Emergency Guide maps the parallel French and home-country processes side by side, with coordination checklists for each milestone.

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