Living in Mayotte from Mainland France: Status, Cost of Living, Housing, Taxes, Schooling and Formalities

Mayotte became the 101^st French department on 31 March 2011 (CLEISS, the French centre for European and international social security liaison). A French citizen coming from mainland France settles there as in any other region of France, with their identity card: visa and residence permit rules concern foreign nationals. The Labour Code has applied in Mayotte since January 2018 (CLEISS), and universal health protection has been in force there since 1 July 2026.

For relatives of foreign nationality (spouse, parent), the prefecture specifies that residence permits issued in Mayotte only authorise stay in Mayotte itself: to go elsewhere in France, the holder of a residence card must obtain a visa on their travel document. A first application as the parent of a French child requires proof of lawful entry into Mayotte, and since 17 July 2024 every application must be accompanied by the signed republican commitment contract. Some applications go through ANEF online, others through an appointment at the prefecture counter.

The law of 11 August 2025 on programming for the rebuilding of Mayotte changes several residence-duration conditions of the code on the entry and stay of foreign nationals (seven years of habitual residence in Mayotte for certain applications based on private and family life, five years of lawful and continuous residence for the parent of a French child, according to its article 5). A foreign relative should check with the prefecture before planning the move.

The advantages noted in the official sources:

• The French legal framework: labour law, universal health protection and gradual convergence of the SMIC (French minimum wage) and benefits with the mainland (law of 11 August 2025).
• An income tax reduction of 40%, within a limit of €4,050.
• Announced public investment: the 2025 law programmes €407 million for health and €730 million for water and sanitation.
• A stable tropical climate, with limited temperature variations (Météo-France).

The points to anticipate:

• The cost of living: prices 10% higher than on the mainland, and 30% higher for food (INSEE).
• Housing and networks: frequent sheet-metal housing and water cuts organised in rotation.
• Employment: a narrow job market, presented in the guide working in Mayotte.
• Natural and health risks: cyclones and tropical diseases monitored by Santé publique France, detailed in the guide health system in Mayotte.

Mayotte has 17 communes and more than 320,000 inhabitants, with sustained population growth; density is close to 860 inhabitants per km² (INSEE). Mamoudzou, the main town, reaches 94,600 inhabitants. INSEE specifies that no commune lost population between the two censuses: growth is positive everywhere, except in Tsingoni (very low) and Pamandzi (stable).

• Mamoudzou and Kaweni: the CSSM headquarters is at the Centre Kinga, route nationale 1, in Kaweni (CSSM).
• Petite-Terre (Dzaoudzi, Labattoir, Pamandzi): water there follows a different regime from the rest of the island since an incident at the local plant (SMAE).
• The rest of Grande-Terre: travel times, access to water and proximity to a care centre weigh on the choice of a commune.

The official sources consulted do not rank the communes against each other; the choice of where to settle depends on the distance to work, to school and to health services.

According to INSEE, prices are 10% higher in Mayotte than in mainland France; the mainland basket costs 17.7% more there and food 30% more, a gap that has widened. The law of 11 August 2025 (article 25) raises the net Mayotte SMIC to 87.5% of the mainland level from 1 January 2026: the guide working in Mayotte details the amounts.

On taxes, article 197 of the General Tax Code reduces by 40%, within a limit of €4,050, the tax of taxpayers domiciled in French Guiana and Mayotte. Domicile is assessed on 31 December of the year of income, which makes the settling date worth planning into the moving calendar.

INSEE's Housing survey, carried out before Cyclone Chido, finds 64% of homes of solid construction, 35% of sheet metal and 1% of wood, plant material or earth. 25% of households had no running water in their home (61% in sheet-metal homes, 6% in solid homes) and 19% had no access to electricity (47% of sheet-metal homes, 3% of solid homes). A quarter of households are tenants, two thirds of them with no written lease, and 28% own both their home and the land. The study publishes no rent level.

The law of 11 August 2025 devotes €200 million to housing construction and the elimination of informal settlements over 2025-2029, and €730 million to water and sanitation over 2025-2031. The SMAE, the network operator, applies water rotations, for example 36 hours of supply for 36 hours of cuts across most of the island, and asks people to relay only its official communications. A home is therefore also assessed on its water storage capacity and its electricity connection.

To rent or buy, a few habits help: ask for a written lease, visit the property and check the strength of the construction against cyclone risk. The law also specifies that a home built or occupied without any right or title, or located in an informal settlement area, cannot be regarded as adequate housing when examining a family reunification application (article 8).

Education comes under the Éducation nationale (the French national education system), within the Mayotte school district (académie). The district's websites could not be read at the date of consultation: no enrolment figures or school calendar are therefore given here, and families should contact the académie for enrolment and for the start-of-year calendar.

INSEE notes that 61% of 18-64 year-olds have difficulty writing in French, against 10% in mainland France, and that 68.5% of non-enrolled people aged 15 or over have few or no qualifications (data from the census). Shimaoré and Kibushi are two local languages: the CSSM, for example, distributes its information videos on self-employment in French, Shimaoré and Kibushi. For a student coming from the mainland, the question of health cover is dealt with in the guide healthcare reimbursement in Mayotte; the page student insurance abroad is for stays outside France.

1. Notify your home organisations: Assurance Maladie (the French national health insurance) fund, family allowance fund, France Travail, pension funds and the tax authorities.
2. CSSM affiliation: the basic condition is to live in Mayotte; the application is filed with legible supporting documents, and the CSSM issues the certificate of entitlement and the Vitale card (CSSM). Since 1 July 2026, universal health protection affiliates anyone who works or lives in Mayotte on a stable and lawful basis.
3. ameli account and referring doctor: create your account to download the certificate of entitlement, and declare a referring doctor from age 16.
4. Tax residence: declare your income to the tax authorities; the tax reduction depends on your domicile on 31 December.
5. Water and energy: follow SMAE communications on water rotations and plan a water reserve.
6. Insurance: supplementary health insurance covers the ticket modérateur (the share left to the patient), and an assistance policy complements the medical evacuation organised by the CSSM (see the social protection and healthcare in Mayotte page).

The Travel advice section of France Diplomatie (the French foreign ministry) is aimed at destinations outside France; at the date of consultation, no page is devoted to Mayotte there, and the Comoros page consulted does not mention Mayotte. Safety information therefore comes from the prefecture, whose Security section states that the safety of the population is a major concern for State services. It groups four themes: civil protection, road safety, public safety (border police, departmental public safety directorate, gendarmerie) and crime prevention. The instructions in force can be read on the prefecture website.

Cyclone Chido struck Mayotte on 14 December 2024, which interrupted the census cycle (INSEE). The climate is tropical, hot, humid and maritime, with more than 1,500 mm of rain a year, a hot and rainy season (north-west monsoon) at around 32 °C by day and 25 °C at night, and a cooler and drier season at around 28 °C by day and 21 °C at night, with minimums that can fall to 16 °C inland. Two intermediate seasons, from April to May and from October to November, fall in between (Météo-France). Emergency numbers and the health situation are in the guide health system in Mayotte.