Property Tax in Luxembourg: What Owners and Buyers Actually Pay

“Property tax in Luxembourg” can mean several unrelated charges. The recurring impôt foncier is an annual communal bill for owning land or a building. It is not the 7% registration and transcription duty charged on a purchase, a notary fee, income tax on rent or capital-gains tax when a property is sold.

Separating those moments matters when comparing a purchase budget or an investment. A low annual property-tax bill does not make acquisition costs disappear, and a headline purchase-duty rate says nothing about the owner's later income-tax position.

The current annual property-tax formula

Every natural or legal person owning built or unbuilt real estate in Luxembourg on 1 January of the tax year is within scope, subject to specific exemptions. Co-owners are jointly and severally liable. The current system groups agricultural and forestry land in category A and other property in category B. Communes may subdivide B into uses including commercial, mixed-use, houses and apartment buildings, other unbuilt property and residential building plots.

“Property tax is calculated using the following formula: Property tax = tax base × communal rate.” — Guichet.lu

The Luxembourg Inland Revenue, the ACD, determines the tax base. It first establishes a unit value and multiplies that by a statutory assessment rate. Under the current rules, the unit value derives from rental values at 1 January 1941, with indexation to current values. A new building is valued by estimating what its rent would have been at that historic date before indexation.

The commune then applies its annual rate to the tax base. Rates differ by commune and property category and are published in Mémorial B. This is why applying one national percentage to today's market price produces the wrong answer. The most useful documents are the ACD's unit-value and tax-base statement and the commune's annual bill.

The commune sends the bill with its deadline. An annual amount below EUR 55 is paid by 15 November. EUR 55 to EUR 110 is normally split between 15 May and 15 November; more than EUR 110 is paid in four instalments on 15 February, May, August and November. A dispute about the bill goes to the commune's college of mayor and aldermen; a dispute about the base goes to the ACD director.

What a buyer pays at the notarial deed

Purchase duties are a different, one-off charge. The standard rate is 7% of the taxable acquisition amount: 6% registration duty and 1% transcription duty. Notary remuneration, mortgage-registration costs, bank charges, valuation, insurance and possible agency fees are separate again. A purchase budget should list each line rather than calling the whole total “property tax”.

For an eligible home bought as a genuine personal main residence, the Bëllegen Akt credit reduces registration and transcription duties. The currently published Guichet procedure states a ceiling of EUR 40,000 per buyer and a minimum collection of EUR 100, with deadlines for occupation and at least two years of continuous personal use. A change of use or transfer can trigger repayment and must be reported.

On 16 July 2026, the government announced a package proposing to increase that ceiling to EUR 45,000 per buyer and add relief for qualifying partly completed new homes. The announcement contemplated effect for transactions from that date but also said claims made before the law enters into force would be processed after enactment. At the 3 August cut-off, buyers should treat the new package as pending legislation and ask the notary or AED which rule can lawfully be applied to their deed.

Owning, renting and selling are separate tax events

A landlord still receives the annual communal bill, but rental income is handled through income-tax rules after allowable expenses. Interest, maintenance, depreciation and other deductions have their own conditions. The annual property tax may be a relevant expense in a rental or business calculation, yet it is not a substitute for the income-tax return.

On sale, any taxable capital gain depends on ownership period, use, acquisition cost, improvements and the law applicable at disposal. A main residence may receive different treatment from an investment property. None of that can be inferred from the annual communal bill. Sellers should retain the deed, invoices for qualifying works and transaction documents.

What the proposed reform changes—and does not yet change

Bill 8082A would replace the historic valuation model with a land-based system and introduce a tax intended to mobilise undeveloped building land. However, the Chamber of Deputies page, updated in May 2026, still listed the bill in committee and cited a targeted 2028 implementation. It is not the current formula for 2026 bills.

An official reform simulator illustrates possible future amounts but is not a tax assessment. Earlier public pages referring to 2026 as the earliest possible year reflect an older timetable. Owners should act on the ACD base notice, communal rate and issued bill until enacted transitional rules say otherwise.

• Use the ACD base statement and commune rate for the annual bill.
• Budget 7% purchase duties separately before valid relief.
• Confirm the enacted Bëllegen Akt ceiling with the notary or AED.
• Keep rental income and sale gains separate from property tax.
• Treat reform simulations as scenarios, not current assessments.