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    marcheAugust 23, 2026

    Primary or secondary residence in Luxembourg: what changes

    Signed Michael EiresPublished August 23, 2026· 6 min
    Primary or secondary residence in Luxembourg: what changes
    Primary or secondary residence in Luxembourg: what changes
    — Lecture —

    ( In short )

    In Luxembourg, the status given to a property — primary residence, secondary residence, or rental investment — is not just an administrative formality: it directly determines access to the Bëllegen Akt tax credit, the permitted loan-to-value ratio (up to 100% vs. 80%) and the tax treatment of income or capital gains. Clarifying this status from the start of a purchase project avoids costly adjustments later.

    ( Key takeaways )

    1. 01The Bëllegen Akt (tax credit on registration duties) is reserved for buying a primary residence — it does not apply to a secondary residence or a rental investment.
    2. 02The CSSF Regulation 20-08 loan-to-value ratio varies by status: up to 100% for a first-time buyer's primary residence, 90% for other primary-residence buyers, 80% for a rental investment.
    3. 03A secondary residence does not carry the same tax rights as a primary residence, notably on the deductibility of loan interest.
    4. 04Rental income from a let property is taxable and must be declared, with tax treatment distinct from a residence occupied by its owner.
    5. 05The status declared at purchase must match the property's actual use — a later review can challenge a tax advantage wrongly obtained.

    A status that is not just administrative

    When buying property in Luxembourg, the status given to the property — primary residence, secondary residence, or rental investment — must be defined from the outset. This choice is far from trivial: it directly determines access to certain tax advantages, the loan-to-value ratio banks will grant, and the tax treatment of future income or capital gains.

    The Bëllegen Akt, reserved for primary residences

    The Bëllegen Akt tax credit, which reduces registration and transcription duties by up to €45,000 per buyer (€90,000 for a couple), is strictly reserved for purchasing a primary residence. A secondary residence or a property intended for letting does not qualify — a point to build into the overall acquisition budget from the outset, since the gap in duties payable can be significant.

    A different loan-to-value ratio depending on use

    CSSF Regulation 20-08 governs the loan-to-value ratio banks grant depending on the property's status: up to 100% for a first-time buyer's primary residence, 90% for other primary-residence buyers, and 80% for a rental investment. The same borrower profile can therefore see their financing capacity vary significantly depending on the nature of the project.

    Secondary residence: different tax rights

    A secondary residence, occupied occasionally without habitual residence there, does not benefit from the same tax rights as a primary residence — notably on the deductibility of loan interest, whose caps and conditions are designed for the taxpayer's main home. This point deserves clarifying upfront with tax advice if the project is still undecided between the two uses.

    Rental investment: income to declare

    When a property is let, the rent received constitutes taxable income, to be declared under rules distinct from those for a home occupied by its owner. This tax dimension should be built into the profitability calculation from the purchase project stage, not discovered afterwards.

    Staying consistent between declared status and actual use

    The status declared at purchase must remain consistent with the property's actual use over time. A tax advantage obtained on the basis of primary-residence status, for a property ultimately occupied occasionally or let out, can be challenged during a review. If in doubt about the status best suited to your project, tax or notarial advice can settle the question before signing.

    Support from EIRES Real Estate

    Whether your project targets a primary residence, a secondary residence, or a rental investment, EIRES Real Estate supports you in budget framing and financing with local banks — with full transparency on the implications specific to each status.

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    ( Frequent questions )

    What distinguishes a primary residence from a secondary residence in Luxembourg?

    A primary residence is the home actually occupied on a habitual basis by its owner. A secondary residence is a property held in addition to that main home, occupied occasionally (weekends, holidays) without habitual residence there.

    Does the Bëllegen Akt apply to a secondary residence?

    No. The Bëllegen Akt tax credit on registration and transcription duties is reserved for buying a primary residence — it does not apply to a secondary residence or a rental investment.

    Does the loan-to-value ratio change depending on the property's status?

    Yes. CSSF Regulation 20-08 allows up to 100% financing for a first-time buyer's primary residence, 90% for other primary-residence buyers, and 80% for a rental investment.

    How is income from a let property taxed?

    Rental income is taxable and must be declared — its tax treatment differs from that of a residence occupied by its owner. Tax advice remains recommended to precisely assess your situation.

    Can a property's status be changed after purchase?

    A property's actual use can evolve, but the status declared at purchase must remain consistent with that use — a tax advantage obtained on the basis of an inaccurate status can be challenged during a review.

    ( Sources )

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