US-France Tax Treaty Guide 2026: CSG/CRDS, Dividends, and the French Retiree Trap

The Convention Between the United States and France for the Avoidance of Double Taxation was signed on August 31, 1994, and substantially amended by the 2009 Protocol. The Protocol brought the US-France treaty in line with contemporaneous US treaties — adding a 0% dividend tier for qualifying parent-subsidiary relationships and refining the Limitation on Benefits (LOB) article.

The US-France bilateral tax relationship is one of the most active in the US treaty network, given France's large expatriate community in the US and the significant numbers of Americans who retire to or work in France. France is also a major source of US-bound investment and cultural-economy royalties (film, music, publishing).

The treaty is generally comprehensive and well-structured — but it has two major pain points for individuals: First, French social charges (CSG — Contribution Sociale Généralisée, and CRDS — Contribution pour le Remboursement de la Dette Sociale) totalling 17.2% are imposed on investment income and are neither covered by the treaty nor creditable against US income tax. Second, the interaction between France's complex progressive income tax system and the US foreign tax credit calculation requires careful annual analysis. For high-earners and retirees with investment income, the net effective double-tax burden can be substantial.

Key Withholding Rates Under the US-France Treaty

The rate structure following the 2009 Protocol:

France's PFU (Prélèvement Forfaitaire Unique): Since 2018, France taxes most investment income under a flat tax system — the PFU or 'flat tax' — at 30% total (12.8% income tax component + 17.2% social charges). For non-residents receiving French-source income, only the income tax component typically applies at withholding stage. The treaty reduces the withholding rates as shown above on the income tax component. Social charges (CSG/CRDS) are handled separately.

The CSG/CRDS Problem: 17.2% That Doesn't Qualify for US Foreign Tax Credit

The most significant trap for Americans in France is the non-treatability and non-creditability of French social charges. This affects any US person (citizen, Green Card holder, or substantial presence resident) with French-source income.

What Are CSG and CRDS?

The Contribution Sociale Généralisée (CSG) and Contribution pour le Remboursement de la Dette Sociale (CRDS) are levies that fund French social security programmes. Together they total 17.2% on most types of income:

• Employment income: 9.7% (after 1.75% or 3.8% abatement)
• Replacement income (unemployment, sick pay): 6.2% or 9.7%
• Investment income (dividends, interest, capital gains): 17.2% (full rate, no abatement)
• Rental income: 17.2%

Why CSG/CRDS Is Not Creditable Against US Income Tax

The US Foreign Tax Credit (FTC) allows US persons to credit foreign income taxes paid against their US tax liability. To qualify, the foreign levy must be a tax, and it must be imposed on income (not wages, payroll, or social insurance). CSG/CRDS fails the FTC test for several reasons:

• EU court rulings: The European Court of Justice (de Ruyter, 2015) ruled that CSG/CRDS, when levied on investment income, violates EU freedom of movement because they fund social security — a French domestic argument that nevertheless clarifies the nature of the charges
• IRS position: The IRS has consistently held that CSG/CRDS are social charges, not income taxes, and therefore not creditable foreign taxes. Notice 2018-72 addressed a French Supreme Court ruling that created temporary uncertainty — the IRS confirmed CSG/CRDS remain non-creditable
• Treaty coverage: The US-France treaty's Article 2 (Taxes Covered) covers only French income taxes — CSG and CRDS are not listed and not covered

The Practical Double Taxation Impact

A US citizen residing in France with $100,000 in dividend income from a French portfolio faces:

• French income tax (12.8% PFU income component): $12,800 — creditable against US income tax via FTC
• French CSG/CRDS (17.2%): $17,200 — NOT creditable, non-recoverable
• US federal income tax at 15% qualified dividend rate: reduced by FTC to approximately $0 (FTC from French income tax exceeds US liability)
• Net non-creditable French tax: $17,200 on $100,000 of dividends

For Americans with substantial French investment income, this 17.2% non-creditable charge represents a genuine, treaty-irreducible tax burden. It is one of the most punishing aspects of being a US person in France.

Partial Relief for EU/EEA Non-Residents

French law historically exempted EU/EEA residents from CSG/CRDS on certain French-source income. Post-Brexit, UK residents may have lost this exemption. US residents in France (tax residents) face the full 17.2%.

Employment Income and the 183-Day Rule

Article 15 of the US-France treaty allocates employment income taxation under the standard OECD framework:

US Employees on Assignment in France

A US employee working in France for a US employer owes French income tax on French-source wages. Under Article 15(2), a temporary assignment of fewer than 183 days in a 12-month period is exempt from French income tax, provided: the employer is not French-resident, and the wages are not borne by a French permanent establishment. This is the standard 183-day exemption.

French Employees Working in the US

French residents working in the US owe US income tax on US-source wages. France taxes residents on worldwide income but allows a foreign tax credit for US taxes paid, generally preventing double taxation of employment income.

Impatriate Tax Regime (France's Answer to Beckham Law)

France offers an impatriate exemption (Régime des impatriés) for employees hired from abroad or seconded to France. Qualifying employees can exempt 30% of their French-source salary from French income tax (plus certain specific additional payments) for up to 8 years from the year of arrival. This is less generous than Spain's Beckham Law (24% flat rate) but still significant for relocating executives. The impatriate regime does not reduce the CSG/CRDS obligation.

Pensions and Retirement Income Under the US-France Treaty

Article 18 (Pension, Annuities, Alimony) and Article 19 (Government Service) allocate pension taxation between the US and France.

Social Security Benefits

Under Article 20 of the treaty, US Social Security benefits received by a French resident are taxable only in France (not in the US). This is a significant benefit for American retirees in France — it means no US income tax on US Social Security. France taxes 85% of the Social Security amount at normal French rates, but without US tax applying.

Conversely, French social security benefits (pensions) received by US residents are taxable only in the US.

Private and Occupational Pensions

Under Article 18, private pension income is taxable in the country of residence. An American retiree living in France with a US IRA or 401(k) distribution: taxable in France (where resident), not in the US (where not resident). This is the standard OECD pension treatment.

However, US citizens are taxed on worldwide income regardless of where they live — a US citizen retiree in France owes US federal income tax on IRA/401(k) distributions regardless of the treaty. The treaty provides France taxing rights but does not override US citizenship-based taxation. The US citizen retiree claims a French foreign tax credit on their US return for French income tax paid on the pension income.

French Pension for American Retirees

An American who worked in France for years may have contributed to the French state pension (Retraite) and an occupational pension. Under the treaty, distributions from French pensions to US-resident Americans are taxable in the US (where resident). French pension institutions may withhold French tax — if so, a treaty claim or refund procedure is available.