French resident working in Monaco: taxation

You live in France and work in Monaco. The question is simple: where is your salary taxed? The relevant legislation generally indicates taxation in France, according to the income tax scale. Social security, however, generally follows the place of employment for employees of French or Monegasque nationality: in this case, the Monegasque system applies, with some exceptions.

This page deals with employees whose tax residence is in France. It does not cover French citizens who move to Monaco (see the related page on the residence certificate), the boxes in the tax return, the allowance applicable to Monegasque salaries, or the self-employed.

The starting point: tax residence in France

The BOFiP reminds us, subject to international agreements, that persons domiciled in France are taxed "under the ordinary law conditions on all their income from French or foreign sources", even if they have not been transferred to France.

Tax residence is determined by Article 4 B of the French General Tax Code (CGI). It considers three criteria:

• the home or main place of residence in France; ;
• the main professional activity carried out in France; ;
• the center of economic interests in France.

It is sufficient for one of the criteria to be met. The principal residence generally corresponds to more than six months of presence in the year, according to the BOFiP (French Official Tax Bulletin). Under domestic law (Article 4 B) and subject to the tax treaty, a home in France is therefore sufficient to establish French tax domicile, even if the place of work is in Monaco.

What the 1963 Franco-Monegasque convention says

The convention of May 18, 1963, comprises 26 articles, of which Article 6 has been repealed. These articles deal in particular with Monegasque corporate income tax, French citizens transferring their residence to Monaco (Article 7), tax credits for Monegasque corporate income tax (Article 11), the exchange of information (Articles 20 and 21), and turnover taxes. The term "frontier workers" does not appear in the convention.

Three passages, however, concern employees:

• Article 12. It stipulates that, "in order to enable employees and pensioners of Monaco residing in France to benefit" from the tax credit to which they would be entitled if they worked in France, the Prince's Government pays a fixed sum annually to the French Treasury. The 1963 text specifies this sum in francs. The current effect of this mechanism on the declaration process is not detailed in the sources consulted.
• Article 21. It obliges the princely government to automatically inform the French administration of the sums received as salaries, wages, stipends, pensions by persons domiciled in France.
• The exchange of letters of May 26, 2003, point II.3. To give full effect to Articles 7 and 20, taxpayers domiciled in France for tax purposes and carrying on a professional activity in Monaco are subject, for that activity and for fiscal years ending on or after January 1, 2002, to French reporting obligations, under the same conditions of form and deadline. The excerpts read do not specify whether this also applies to employees.

In the excerpts read, none of these passages grants Monaco the right to tax the salary of a French resident, and Articles 12 and 21 support the declaration of income in France. This is an interpretation of the texts, not an explicit rule: have it confirmed for your specific case.

What Monaco says about its own tax

The page "Monaco Taxation" (updated August 27, 2026) states that the absence of income tax in Monaco, stemming from an 1869 ordinance, only applies to activities or individuals actually and effectively established in the territory. It does not address French residents who work there, nor does it cover social security contributions.

Overtime hours, as cited by the BOFiP

The French tax authority's official bulletin (BOFiP) BOI-INT-CVB-MCO-10 (version of June 2, 2021) states that individuals residing in France and working in Monaco, as well as French citizens residing in Monaco and employed there, who are subject to income tax under Article 7-1, are eligible for the income tax exemption on overtime pay provided for in Article 81 quater of the French General Tax Code (CGI). This ruling is based on a ministerial response published in the Official Journal of the National Assembly on December 22, 2020.

The conditions and limits of this article have not been read for this page, and the doctrine dates from 2021: to be rechecked before drawing a figure from it.

Social security follows the workplace

The Franco-Monegasque social security convention (February 28, 1952), presented by the Cleiss (French Centre for Social Security Information), applies to salaried workers of French or Monegasque nationality. The employee is subject to the legislation of the state where they work (Article 3), with some exceptions. The Cleiss states that "unemployment insurance does not fall within the scope of the convention." Salaried workers employed in Monaco receive family benefits under the Monegasque system for their children residing in France (Articles 29 and 30).

Cleiss publishes contribution rates for the period from October 1, 2026 to September 30, 2027, updated in October 2026. For UNEDIC, the page specifies "Rate valid on January 1, 2026" and "Modified on January 1 of each year": the UNEDIC rates in the table are those of January 1, 2026.

Since Monaco does not have its own unemployment insurance scheme, the Cleiss clarifies that employees contribute to the French scheme. The CMRC supplementary pension (since January 1, 2024) is added, with its own contribution brackets, allocated as follows: 60% for the employer and 40% for the employee. Collection is handled by the Monaco Social Security Funds.

Thomas, €54,000 taxable income: a numerical example (fictitious profile)

Situation. Thomas, a fictitious employee, lives in France and works in Monaco for a Monegasque company. He is single, has a tax allowance, and receives €5,000 gross per month. His net taxable income, including his Monegasque salary, is €54,000 (based on the assumptions in this profile).

Issue. What is the approximate amount of income tax in France, and what are the basic employee contributions in Monaco?

Strategy. Apply the 2026 income tax scale (based on 2025 income) to €54,000, then calculate the employee contributions for CAR and UNEDIC on €5,000 gross per month, below the monthly ceilings. The CAR rate is that of the period from October 1, 2026 to September 30, 2027; the UNEDIC rate is that of January 1, 2026.

Result.

The applicable scale is 0 % up to €11,600, 11 % up to €29,579, 30 % up to €84,577, then 41 % and 45 % above that. This profile is hypothetical. The calculation is made before any discounts, reductions, or credits, and without CMRC supplementary pension or CSG contributions. It illustrates the approximate range and does not predict your specific situation.

French resident in Monaco: what changes depending on your situation

• Your tax residence The situation described assumes a residence in France. A French citizen settling in Monaco requires a different analysis.
• Your status This page deals with employees. Self-employed individuals, managers, or seconded employees have their own specific rules.
• Your social security scheme : the Monegasque scheme applies in principle to employees who work in Monaco, with exceptions in Article 3 of the social security agreement.
• Your overtime : the BOFiP cites them, but their conditions have not been read.
• Your home : a spouse, children and other income change the quotient and the average rate.
• Your calendar : the rates in the Cleiss table are valid from October 1, 2026 to September 30, 2027, except for UNEDIC, whose rates are those of January 1, 2026 and are modified every January 1.

The rule depends on your situation. No results are guaranteed.