In summary…
The theoretical cost of the exit tax is equivalent to 30 % of the unrealized capital gain on the securities on the day of departure (12.8 % of income tax and 17.2 % of social security contributions), in application of the single flat-rate levy.
For an unrealized capital gain of €1 million, the theoretical exit tax amounts to €300,000. For €5 million, it is €1.5 million. For €10 million, it is €3 million. However, the actual cost borne by the taxpayer may be zero if a deferral of payment is obtained and maintained until the expiry of the scheme (fifteen years for securities not sold).
The actual cost of the operation therefore depends less on the rate than on the subsequent divestment strategy.
How much is the exit tax? The basic calculation
Exit tax = (market value of securities on the date of departure − acquisition price) × 30 %. The result is called the theoretical exit tax. It becomes the effective exit tax only in three cases: sale of securities before the end of the deferral period, early return to France, or failure to file a tax return. Otherwise, it is released after fifteen years for the securities retained.
Three numerical examples
We have identified 3 cases of Exit tax simulations figures to put things into perspective.
Case 1 — Founding director of an industrial SME (Lyon)
| Acquisition price (company founded in 2008) | 5 000 € |
| Market value on the day of departure (2026) | 3 200 000 € |
| Unrealized capital gain | 3 195 000 € |
| Theoretical exit tax (30 %) | 958 500 € |
| Actual cost if the stay of execution is maintained and the securities are held for 15 years | 0 € |
Here we observe the potential financial impact of a Exit Tax in the context of an expatriation, taking the example of securities acquired in 2008 for €5,000 and whose market value is estimated at €3,200,000 on the day of departure in 2026.
- High unrealized capital gain: The difference between the purchase price (€5,000) and the market value (€3,200,000) generates a very significant unrealized capital gain. 3 195 000 €. It is on this capital gain that the Exit Tax is calculated.
- Theoretical Exit Tax: At the theoretical rate of 30% (including income tax and social security contributions), the Exit Tax would amount to 958 500 €. This sum is, in principle, deferred payment at the time of expatriation.
- Potential effective cost of €0: The key point is the line item "Effective cost if deferral maintained and securities held for 15 years". If the deferral of payment is maintained and the securities are held for the period required by French law (currently 2 years for capital gains under €2.57 million, but historically 8 or 15 years for larger capital gains, as the table suggests), the Exit Tax may be fully tax-exempt. This means that, provided the conditions for holding the securities are met and the securities are not sold before the expiry of the deferral/relief period (or the carry-forward and offset mechanisms are applied in the event of a sale after departure), the final tax cost at the time of departure is 0 €.
The importance of the payment deferral in the Exit Tax mechanism is therefore clear. Although the theoretical tax is substantial (€958,500), the mechanism avoids immediate payment and, provided the securities are retained, allows for the total cancellation of the tax debt.
Case 2 — Tech executive selling his first company (Paris)
| Acquisition price of holding company reinvestment | 200 000 € |
| Market value on the day of departure | 12 000 000 € |
| Unrealized capital gain | 11 800 000 € |
| Theoretical exit tax (30 %) | 3 540 000 € |
| Actual cost if sold within 8 years of departure | €3,540,000 owed |
In this case, we see the theoretical calculation of the "Exit Tax" for the expatriation of a taxpayer holding holding company shares.
Taking into account the elements listed here, and based on a theoretical rate of 30 % (including income tax and social security contributions), the theoretical Exit Tax amounts to €3,540,000 (€11,800,000 x 30 %).
This amount of €3,540,000 corresponds to the effective cost if the shares are sold within eight years of departure, meaning that the Exit Tax would be due if the shares were sold within eight years of transferring tax residence abroad. Generally, this payment is deferred (suspended) if the taxpayer moves to a country within the European Union or a country that has signed an administrative assistance agreement with France.
Case 3 — Investor with a diversified portfolio (unlisted and listed securities)
| Cumulative portfolio acquisition cost | 350 000 € |
| Market value on the day of departure | 1 500 000 € |
| Unrealized capital gain | 1 150 000 € |
| Theoretical exit tax (30 %) | 345 000 € |
| Actual cost after progressive tax relief (released security by security) | to be modeled on a case-by-case basis |
Never consider the theoretical amount of the Exit Tax as the actual cost. The crucial advice is to systematize a detailed and customized modeling of the impact of the Exit Tax.
- The Exit Tax is not a tax "paid in advance".« This is, in principle, a payment deferral (except in certain cases of departure to non-cooperative states).
- The actual cost may be zero The main challenge is to comply with the conditions of tax relief (total cancellation), often after a period of maintaining tax residence abroad (generally 2 years for departures made before 2019, and 5 years for departures since 2019, with important nuances).
This case highlights the potential gap between:
- The Immediate Psychological/Theoretical Burden: The theoretical exit tax of €345,000. This amount, although high, should not be a deterrent if managed correctly.
- The Actual/Final Cost: The amount that will actually be due (which needs to be modeled, but which could be €0).
In short, Tax planning is a key issue It is imperative to conduct a thorough analysis of the consequences of the future residence and the timeframes to ensure that the cost of this deferred taxation will be appropriate. canceled.
The 3 levers for effective cost reduction
Lever 1 — Contribution-sale to holding company before departure.
If the contribution is made at least three years before the sale, the tax deferral of the’Article 150-0 B ter of the French General Tax Code (CGI) is maintained without any reinvestment requirement. Capital gains tax is then frozen on the contributed base and is not included in the calculation of exit tax at the time of departure.
Lever 2 — The gift before transfer.
A gift made before the transfer of residence eliminates the unrealized capital gain on the gifted securities (the value is fixed for the recipient on the date of the gift). Coupled with a division of ownership, It reduces the taxable base for exit tax while organizing the transfer.
Lever 3 — Choosing a destination with an agreement.
Automatic payment deferral is only applicable to transfers within the EU/EEA. For non-EU destinations, optional deferral requires guarantees (bank guarantee, pledge). Choosing a destination with an agreement and planning the deferral are crucial to avoid having to provide hundreds of thousands of euros in guarantees.
The Asset Stress Test – Anticipating Instability in 2027
L'’wealth engineering It is not about managing certainties, but about modeling risks. At Balmont Conseil, we apply the methodology of Stress Test — inherited from the Basel III banking frameworks — to your expatriate taxation.
The Disruption Scenario: The Extension of the Relief
The major risk for an expatriate executive is not the initial Exit Tax rate, but the retroactive modification of the tax relief conditions.
Assumption : What happens if the 2027 Finance Law extends the holding period for securities from 15 to 20 years, with retroactive application to departures in 2026?
- Liquidity Risk: A five-year extension of the grace period freezes your divestment strategy. If your need for liquidity (reinvestment, lifestyle) arises in year 16, such a reform transforms a cost of €0 into an immediate tax debt plus late payment interest.
- Inaction as a Cost: Without prior structuring (Levers 1 and 2: Contribution-sale or Gift), you are "hostage" to the French holding period while you reside abroad.
- The Balmont Response: Our AI modeling doesn't stop its calculations on the day of departure. It incorporates a «"Regulatory Breakdown Coefficient"». We systematically recommend capital gains clearance schemes (split gifts) before departure to make your assets indifferent to the duration of the Exit Tax deferral.
Anticipating that the rules of 2026 will be the same as those of 2041 is a strategic error. The Stress Test allows you to build a structure where, even if legislation becomes stricter after your departure, your net-net return remains protected by unassailable standard legal mechanisms.
The goal is not to be subject to the political calendar, but to make it neutral for your assets.
Conclusion
The cost of the Exit Tax as shown in the theoretical simulation is almost always the worst-case scenario. In cases handled by our firm, the average actual cost borne by the client is between 0 and 15% of the theoretical amount, through a combination of contribution-sale, usufruct, deferral, and optimized scheduling. The rule of thumb: what's expensive isn't the Exit Tax itself—it's the lack of structuring. The Balmont simulator generates your personalized cost estimate in 3 minutes.
Official Sources & Legal Basis
- Exit Tax Mechanism: Article 167 bis of the General Tax Code (CGI) — Defines the transfer of tax residence outside of France and the calculation methods (30 %).
- Payment Deferral & Relief Delays: BOI-RPPM-PVBMI-50-10-20 — Administrative doctrine specifying the time limits of 2, 5 or 15 years depending on the departure date and the amount of capital gains.
- Social Security Contributions on Capital Income: Article L136-6 of the Social Security Code — Justify the rate of 17.2 % included in the calculation of the Exit Tax.
- Case Law on Retroactivity: Constitutional Council, Decision No. 2012-662 DC of December 29, 2012 — Legal framework of "tax retroactivity" (Amending Finance Laws).
