Expats on the Côte d’Azur: 5 Tax Mistakes to Avoid in 2026
The most frequent fiscal errors among newly arrived international residents — and the penalties that follow.
- France applies worldwide taxation: all global income must be declared once you become a French tax resident.
- Over 120 bilateral tax treaties can be leveraged to avoid double taxation — but only if properly applied.
- The IFI (wealth tax on real estate) applies from €1,300,000, with a temporary exemption for new residents on foreign assets during the first five years.
- Holding significant participations may trigger the exit tax on latent capital gains upon future departure from France.
- Cross-border succession planning is essential, particularly given France’s rates of up to 45% in direct line.
The Côte d’Azur attracts new international residents every year, drawn by its exceptional quality of life. However, settling in France comes with lesser-known tax pitfalls that can prove costly. Here are the five most frequent mistakes observed among recently established expatriates — and how to avoid them.
“The first year of French tax residency is the most consequential. The decisions taken — or not taken — in that window determine the tax trajectory for the next decade.”Benjamin Cohen — Riviera Wealth Management
Underestimating Worldwide Reporting Obligations
France applies the principle of worldwide taxation: once you are considered a French tax resident, all your global income must be declared, including income from foreign sources. This obligation extends to bank accounts held abroad (declaration no. 3916), life insurance contracts taken out outside France, and trusts. Failure to comply carries significant penalties: €1,500 per undeclared account (€10,000 if held in a non-cooperative state), plus late payment penalties of 80% on evaded taxes.
Ignoring Bilateral Tax Treaties
France has signed over 120 bilateral tax treaties to prevent double taxation. Each treaty assigns the right to tax certain income to one state or the other, according to specific rules. Dividends, interest, property capital gains and retirement pensions each follow different rules depending on the country of origin. Failing to leverage these treaties can lead to effective double taxation. Conversely, careful analysis can sometimes significantly optimise the overall tax burden, particularly through the tax credit mechanism or the exemption with progression method.
Neglecting the IFI from Year One
The Impôt sur la Fortune Immobilière (IFI — wealth tax on real estate) applies once your net taxable real estate assets exceed €1,300,000. For new residents, a temporary exemption regime exists during the first five years: only assets located in France are taxable (Article 964 of the French Tax Code). A common mistake: voluntarily declaring the entirety of one’s global real estate from the first year, when the impatriation regime allows a partial exemption. Conversely, omitting to declare French assets in the belief of benefiting from a total exemption constitutes a major reassessment risk.
Failing to Anticipate the Exit Tax
If you hold significant participations (more than 50% of a company’s rights, or a portfolio value exceeding €800,000), a transfer of tax domicile outside France will trigger the exit tax on latent capital gains. This mechanism, often overlooked at the time of arrival, can become a major obstacle upon future departure. Anticipating this issue from the outset allows holdings to be structured in a way that limits future impact: contribution to a company, donation before transfer, or choice of an appropriate holding vehicle.
Overlooking Cross-Border Succession Planning
France has one of the heaviest succession regimes in Europe, with rates reaching 45% in direct line above €1,805,677. For expatriates holding assets in multiple jurisdictions, the absence of succession planning can lead to double taxation or even conflicts regarding applicable laws. The European Succession Regulation (No. 650/2012) allows individuals to choose the law applicable to their succession (law of habitual residence or law of nationality). This choice, formalised by will, can have considerable consequences on the distribution of assets and the tax burden for heirs.
- Declare all foreign accounts (form 3916) and life insurance contracts: file from the first year, without exception.
- Map every income stream to its applicable bilateral tax treaty before your first French tax return.
- Apply the 5-year IFI impatriation regime correctly: only French real estate is taxable during this window.
- Model your exit tax exposure if you hold significant participations — structure holdings accordingly from day one.
- Draft a will invoking EU Regulation 650/2012 to govern your succession across jurisdictions.
This document is provided for informational purposes only and does not constitute investment advice, a personalised recommendation or an offer to buy or sell financial products. Past performance is not indicative of future results. All investments carry risk, including potential loss of capital. The information in this article reflects Riviera Wealth Management’s analysis at the date of publication and is subject to change. Riviera Wealth Management is a registered financial investment adviser (CIF), registered with ORIAS and a member of the CNCGP.
