Tax residency: the 4 deciding criteria

French tax residency depends neither on your nationality, nor your passport, nor the number of days spent outside France. It depends on four criteria defined by law. Meeting just one of these criteria is enough to remain taxable in France on your worldwide income. Understanding these criteria means understanding what separates a solid departure from a precarious one.

Why tax residency is at the heart of any relocation

Tax relocation is based on a simple principle: ceasing to be a French tax resident and becoming one elsewhere. Everything else—tax savings, legal certainty, long-term viability—stems from this break.

However, many departures fail on this very point. The taxpayer believes they have left France. The tax authorities consider that they never did. The misunderstanding stems from a lack of awareness of the criteria.

A legal concept, not a geographical one.

One can live primarily abroad and remain a French tax resident. One can hold a foreign visa and still be taxable in France. Tax residency is a legal qualification. It must be demonstrated, not declared.

The four criteria of Article 4 B of the French General Tax Code (CGI)

Article 4 B of the General Tax Code sets out four criteria. They are alternative : only one of them needs to be met for France to consider you a tax resident.

Criterion 1 — The home or principal place of residence

Home refers to the place where you usually live, where your immediate family resides. This is the most intuitive criterion.

If no home address is provided, the administration will use your main place of residence: the place where you spend the most time during the year.

The trap of available housing

Keeping a property available to you in France—even if unoccupied—may be enough to maintain your household in France. Keeping an apartment "just in case" is one of the most common weaknesses.

Criterion 2 — Main professional activity

If you carry out your main professional activity in France, you are a French tax resident.

The primary activity is assessed based on the time spent and, failing that, the income it generates. A manager who effectively runs their company from France meets this criterion, regardless of where they live.

Criterion 3 — The center of economic interests

This is the most contested and most underestimated criterion. The center of economic interests is the place from which you derive the bulk of your income, where your main investments, your activity, and the effective headquarters of your business are located.

Why 183 days are not enough

This is a common mistake. Many people think that spending less than 183 days in France is enough to avoid French tax residency. This is incorrect.

If your clients, your company, your income, and your effective management remain in France, the tax authorities can challenge your residency abroad—even if you have spent 200 days outside the country. The number of days spent is only one indicator among others.

Criterion 4 — Status as a state agent

French civil servants and state employees posted abroad remain French tax residents. This criterion only applies to a minority of profiles.

What happens in the case of dual residency?

You may meet the French criteria and those of your new country. Two states then claim the right to tax you. This is the situation of dual residency — one of the most dangerous if it is not anticipated.

Bilateral tax treaties

To decide, tax treaties apply a hierarchy of criteria, the "treaty tie-breaker".

The hierarchy of the treaty tie-breaker

The criteria are examined in order, until a single state emerges:

1. The permanent residential home.

2. The center of vital interests — family, work, assets.

3. The usual place of residence.

4. Nationality.

An analysis of the applicable convention is systematic in each case. Without it, a relocation remains subject to reclassification.

Mistakes that cause a tax break to fail

Believing that a visa is enough

Obtaining a residence visa abroad does not establish tax residency. The visa grants a right of residence. It does not sever tax ties with France.

Keeping a home available in France

Providing accommodation is one of the first things the administration examines. A coherent departure requires addressing this issue explicitly.

Moving your body without moving your economy

A residence is demonstrated by real life: actual physical presence, local accounts, contracts, memberships, organization of daily life on site. And by a coherent shift in the center of economic interests.

How to establish a defensible tax residence

Building a real presence

A solid tax residence is based on facts: an inhabited dwelling, an effective physical presence, and an organized personal life in the destination. Form follows substance.

Document each element

Proof of attendance, local contracts, bank statements, various registrations: a solid documentary file is built up over the course of the first year, not afterwards. This is one of the aims of our long-term support .

Coordinate expertise

The link between the French situation and the local situation cannot be addressed by two councils operating independently. It requires coordination — this is the purpose of our method , which maintains a single point of contact from diagnosis to implementation.

Tax residency is not declared, it is demonstrated

That's the sentence that sums it all up. You can tick a box on a form. That doesn't create tax residency.

Proof of residence is established through a set of coherent elements: where you actually live, where you work, where your economic interests lie, and how your daily life is organized. The administration examines this set of elements as a whole.

That is why mastering the rules of international taxation is not limited to knowing the rates: it begins with understanding where one is actually taxable.

When misunderstood, tax residency is the first point of vulnerability in a relocation. When properly established, it forms the foundation. Assessing your situation in light of the four criteria is the starting point for any solid relocation.