Real estate taxation in Luxembourg for French residents: understanding local taxes, capital gains, and the tax treaty

Published on July 20, 2026 and written by Cyril Jarnias

Investing in the Grand Duchy is clearly one of the favorite strategies of French savers seeking stability, rental yield, and diversification outside of France. But as soon as a property crosses the border, taxation immediately becomes more complex. Between Luxembourg local taxes, taxation of rental income and capital gains, and the effects of the France-Luxembourg tax treaty, the risk is twofold: paying too much… or inadvertently falling into non-compliance.

Buying Property in Luxembourg as a French National

For a French tax resident, purchasing an apartment or a house across the border involves no quotas or special restrictions. Luxembourg law treats foreigners exactly the same as nationals for property acquisition: no foreign ownership quotas, no specific visa, no real estate-linked “golden visa” program, and the purchase grants no particular right to residence or citizenship.

Registration Fees and Ancillary Costs

When purchasing an existing home, the core costs consist of registration duties and land registry transcription:

For a pure buy-to-let investment, the regime is simple: the full 7% in duties (6% + 1%) is due, with no specific allowance. However, for a French person buying to house their family, the Bëllegen Akt scheme can significantly reduce the bill.

Bëllegen Akt: A Powerful Tax Credit… But Reserved for Primary Residences

The Bëllegen Akt is a tax credit on registration duties that can amount to:

– €40,000 per buyer,

– €80,000 per couple.

– the property must become the buyer’s actual primary residence;

– occupation must occur within two years of the deed;

– in the case of a pure rental investment, the Bëllegen Akt is excluded.

Very important point for a French person: this credit is available to non-residents, provided the property genuinely becomes their new primary residence. A cross-border commuter who actually moves to the Grand Duchy can therefore benefit from it, whereas a pure rental investor is ineligible under any circumstances.

Luxembourg Local Taxes: IFON, IMOB, INOL, and Municipal Taxes

As soon as you become owner of a property located in Luxembourg, you fall within the scope of local taxation, whether you are a Luxembourg resident or a French non-resident. The recent reform of property taxation has introduced a new three-part structure:

– IFON: classic property tax on built and unbuilt land;

– IMOB: tax on the mobilization of land (building land left fallow);

– INOL: tax on dwellings not occupied as a primary residence (integrated within the IMOB framework).

All three levers apply in exactly the same way to residents and non-residents.

Property Tax (IFON): A Moderate but Unavoidable Cost

Luxembourg property tax remains modest compared to many large French cities. It is levied by the municipality based on a historical cadastral value, determined by the Luxembourg tax administration (Administration des contributions directes), using a two-step mechanism:

– calculation of a tax base = unit value × assessment rate (coefficient typically between 0.7% and 1%);

– application of a municipal rate (a rate specific to each municipality, voted annually).

The taxpayer liable is the person listed as owner on January 1 of the year, even if they sell during the year. Payment is made in one or more installments depending on the amount: from one (very low amount) to four annual installments (February 15, May 15, August 15, November 15) for the highest amounts.

For a French investor, this IFON is a pure local tax: it is neither capped by any tax shield nor eliminated by the tax treaty. However, it is deductible as an expense in the calculation of Luxembourg rental income.

IMOB and Vacant Housing: The New Framework (0% Rate but Mechanism in Place)

The property tax reform also created a new layer of taxation aimed at combating land hoarding and vacant dwellings. The IMOB/INOL system is based on the following idea: land or housing must be put to use within a reasonable period; otherwise, a progressive surcharge becomes payable.

For housing, the mechanics are as follows:

– A dwelling is considered unoccupied if no individual is declared at that address for six consecutive months;

– IMOB/INOL then applies to fully empty second homes or certain rental properties left vacant for long periods between tenants;

– Legally, the mechanism is in force, but the rate has been set at 0% for the first five years of implementation (at least until around 2030).

For a French owner, the immediate practical consequence is nil in terms of amount (rate 0%), but not in terms of risk: since the legal framework is active, a future political decision to raise the rates would require no further formalities.

Municipal Taxes and Services

Beyond IFON, municipalities may levy various contributions for local services: waste collection, water, sometimes sewerage tax, etc. However, these charges remain much lower in order of magnitude than the overall cost of housing and, for a landlord, are imputable in their profitability calculation (and partially re-invoiced to the tenant under the lease).

Rental Income in Luxembourg: Taxation for a French Tax Resident

Once the property is purchased, two categories of taxes coexist:

– in Luxembourg: tax on rental income (and property tax);

– in France: inclusion of these rents in calculating the household’s overall tax rate, via the tax treaty.

Who Has the Right to Tax Rental Income?

The 2018 France-Luxembourg tax treaty follows the classic OECD principle: income from immovable property is taxable in the state where the property is physically located. Concretely, a French person who rents out an apartment or building in the Grand Duchy is taxed on that rental income in Luxembourg, not in France.

This applies to:

– standard residential rental income;

– agricultural or forestry income related to land;

– the same income when the property is held by a company.

Local Filing: The “Non-Resident” Category in Luxembourg

A French owner who receives rental income must file a Luxembourg tax return as a non-resident. The property income is then included in their taxable base subject to the progressive rate schedule.

For an individual, the main points are as follows:

– Gross rents received are added to any other Luxembourg-source income;

– Tax follows the progressive Luxembourg income tax scale, from 0% up to a marginal bracket approaching 45.78% (rate including the solidarity surcharge);

– The basic bracket is exempt up to approximately €12,438 of annual income, but with specific rules for non-residents.

As in France, taxation is not based on gross rent but on net income after expenses.

Deductible Expenses and Depreciation

Luxembourg offers a range of deductions for rental income, which is very structuring for after-tax profitability. The following are notably deductible:

Depreciation rules are very precise and depend on the acquisition/completion date:

This mechanism allows, especially for recent properties, to significantly reduce taxable income in the early years thanks to substantial depreciation. For a highly taxed French person, the gain is real, even if this Luxembourg income reappears in France for the effective rate calculation.

Tax Scale and Maximum Effective Rate

For individuals, whether resident or non-resident, rental income is subject to the progressive income tax scale, plus a solidarity surcharge for unemployment insurance. The marginal rate can approach 42% base, plus an additional 7% to 9% for solidarity, resulting in an effective rate that can rise to around 45.78%.

Case of Companies: CIT and Business Tax

If the owner is a company, Luxembourg-based or foreign, the logic changes:

– for a fully resident Luxembourg company or a foreign company operating through a permanent establishment, rental income is subject to corporate income tax (CIT) and municipal business tax (MBT); the combined rate for Luxembourg City is around 23.87%;

– for a non-resident company without a permanent establishment in Luxembourg, rental income from property located in Luxembourg is subject only to Luxembourg corporate income tax, at a rate of approximately 16–17.12% depending on the year, without municipal business tax.

In certain specific cases of collective investment vehicles, a specific 20% property levy on income related to Luxembourg real estate may apply.

Real Estate Capital Gains in Luxembourg: The New Landscape for French Investors

The treatment of capital gains is arguably the most sensitive element for a French person investing in the Grand Duchy, as the Luxembourg framework has undergone several recent adjustments, notably the extension of the so-called “speculative” period.

Who Taxes the Capital Gain on a Luxembourg Property?

For a French tax resident selling an Luxembourg apartment or building, the 2018 treaty is clear: the right to tax the capital gain belongs to the state where the property is located, i.e., Luxembourg. France and Luxembourg coordinate to avoid double taxation:

– Luxembourg calculates and collects the tax on the capital gain under its own domestic law;

– France takes this gain into account when calculating the household’s overall tax rate, then grants a tax credit that, in principle, neutralizes any second levy.

The French taxpayer therefore does not end up taxed twice on the same capital gain, but the existence of the gain may push them into higher brackets for their other income.

Short-Term vs. Long-Term: The Concept of Speculative Gain

Luxembourg law distinguishes two main categories of real estate capital gains for individuals:

– So-called “speculative” gains: sale occurring within five years of acquisition;

– Long-term gains: sale after more than five years of holding.

In the second case (more than five years), the regime is more favorable: the capital gain benefits from a rate of approximately half the marginal rate, leading to a maximum effective rate of around 21–22.89% depending on calculation methods and periods considered. In addition, a significant allowance applies.

Allowance of €50,000 / €100,000: A Key Advantage

For long-term sales, an allowance mechanism further softens the blow:

– allowance of €50,000 per person;

– allowance of €100,000 for a jointly assessed couple;

– allowance available every 10 years.

It should be noted, however, that certain temporary ultra-favorable regimes (e.g., taxation at one-quarter of the overall rate – around 10.5%) for sales within a specific time window have ended. The core mechanism now rests on the five-year cutoff and the “half-rate” rule.

What Happens in France on This Capital Gain?

Even though France does not have the right to directly tax Luxembourg real estate capital gains, it uses them to determine the effective tax rate on the household’s other income. The scheme is as follows:

– the Luxembourg gain is reported by the French taxpayer in the section for foreign-source income (notably box 8TK);

– this amount increases the total income used to determine the average tax rate;

– France then applies this average rate to its own taxable bases (salaries, pensions, French-source rental income, etc.);

– a tax credit equal to the theoretical French tax on the foreign gain is granted, which neutralizes double taxation.

Result: The taxpayer does not pay tax a second time on the capital gain, but this gain can mechanically increase the tax bill on their other income.

French Taxes and the Tax Treaty: How Do the Two Countries Coordinate?

The tax treaty signed on March 20, 2018 between France and Luxembourg (entered into force in late 2019, applicable notably to real estate income and gains from subsequent tax years) has profoundly modernized the rules for allocating taxing rights.

Basic Principle for Real Estate: Taxation in the State Where the Property Is Located

Article 6 of the treaty establishes a simple principle: income from immovable property is taxable in the state where that property is located, whether it is rental income or agricultural or forestry income. This principle applies even when the property is part of a business or is not attached to a permanent establishment in that country.

Article 13 of the treaty specifies the same logic for capital gains: the gain realized on the disposal of immovable property is taxable in the state where the property is located. For a French person, this concretely means:

Conversely, a Luxembourg resident who owns property in France remains taxed in France on the corresponding rental income and capital gain, with Luxembourg then neutralizing double taxation.

French Mechanism for Eliminating Double Taxation

For a French resident, the treaty uses the so-called tax credit method. In the case of Luxembourg rental income and real estate capital gains, the mechanism is as follows:

– Luxembourg income is added to other income to determine total income;

– France calculates the theoretical tax on this worldwide income;

– It then grants a tax credit equal, depending on the case, to the French tax corresponding to this income or to the tax actually paid in Luxembourg, up to the amount of French tax.

Reporting Obligations in France for an Owner of Luxembourg Property

Even though income and capital gains are taxed in Luxembourg, the French resident must report them on their French tax return:

– Net taxable rents in Luxembourg are reported, for information, in the section “foreign income subject to a tax credit equal to French tax” (notably via the well-known box 8TK);

– Capital gains may also be included in this same mechanism for the effective rate calculation;

– Luxembourg real estate must be declared for the purposes of the real estate wealth tax (IFI) if the household’s real estate assets exceed the threshold of €1.3 million.

This last obligation is crucial: even though Luxembourg does not have a general wealth tax for individuals, holding substantial real estate assets in the Grand Duchy can trigger IFI on the French side.

IFI (Real Estate Wealth Tax) and Luxembourg Real Estate Assets

For a French tax resident, IFI targets all real estate assets, whether located in France or abroad, as soon as net assets exceed €1.3 million. An apartment or building in Luxembourg therefore falls fully within the IFI tax base, just like a property in Paris.

The French resident must, in this context, declare their Luxembourg property on IFI forms (form 2042-IFI and appendices detailing assets and debts). The tax treaty does not specifically cover real estate wealth tax, so France retains broad taxing power here.

Insurance, Financing, and Other Costs Not to Be Overlooked

Beyond taxes strictly speaking, several items directly impact the net profitability of a Luxembourg real estate investment for a French person.

Home Insurance

Home insurance premiums in Luxembourg, for the most common orders of magnitude, are around:

These premiums depend on surface area, location, and coverage selected (fire, water damage, liability, theft, etc.). For an investor renting out the property, these expenses are in principle deductible from their taxable rental income in Luxembourg.

Interest Rates and Financing for Non-Residents

Luxembourg mortgage rates in early 2026 fall within an average range comparable to many European countries:

For a French non-resident, banks may require a larger down payment than for a Luxembourg resident (e.g., 20–30% of the price instead of 10–20%). However, interest remains fiscally deductible from Luxembourg rental income, reducing the impact of the financing cost.

Summary: What a French Investor in Luxembourg Should Remember

For a French tax resident who wishes to invest in real estate in the Grand Duchy, several key messages emerge.

First, acquisition taxes are high but stable, with 7% in registration and transcription duties, plus notary fees. The Bëllegen Akt can massively reduce this bill for a primary residence project, including for a non-resident who actually moves to Luxembourg, but remains inaccessible for pure rental investments.

Second, Luxembourg property tax (IFON) remains moderate, often a few hundred euros per year for an apartment. A new IMOB/INOL framework establishes a system to tax unoccupied dwellings and undeveloped land, currently at a zero rate for several years, but potentially more costly in the future for properties left vacant long-term.

For capital gains, the structuring element is the five-year holding cutoff: before this period, the gain is treated as highly taxed ordinary income; beyond it, it benefits from a “half-rate” regime and an allowance of €50,000 per person (€100,000 for a couple), reusable every ten years. France does not directly tax these capital gains but includes them in the average rate calculation, with a tax credit as a safeguard.

In practice, the combination of significant registration duties, rental taxation that can be optimized through depreciation, and a capital gain regime more favorable long-term than short-term makes Luxembourg a market suited to long-term holding, estate-building, or “buy & hold” strategies. Provided that on the French side, the effect of these foreign incomes and gains on the effective rate and on any IFI is anticipated, real estate investment in the Grand Duchy can thus play a structuring role in a strategy of international diversification of a French estate.

Cyril Jarnias

Cyril Jarnias is an independent expert in international wealth management with over 20 years of experience. As an expatriate himself, he is dedicated to helping individuals and business leaders build, protect, and pass on their wealth with complete peace of mind.

On his website, cyriljarnias.com, he shares his expertise on international real estate, offshore company formation, and expatriation.

Thanks to his expertise, he offers sound advice to optimize his clients' wealth management. Cyril Jarnias is also recognized for his appearances in many prestigious media outlets such as BFM Business, les Français de l’étranger, Le Figaro, Les Echos, and Mieux vivre votre argent, where he shares his knowledge and know-how in wealth management.

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