In short. Social rental management (GLS) lets you rent your property not to a tenant, but to an organisation approved by the Luxembourg State: the rent is guaranteed every month, even if the dwelling is empty, and your net rental income has been 90% tax-exempt since tax year 2024. In exchange, the rent is set 30 to 40% below the market level. Once tax is deducted, the gap with a private letting is often small, with none of the risks.
What exactly is social rental management?
GLS is set out in Article 49 of the law of 7 August 2023 on affordable housing. The principle fits in one sentence: you do not sign a lease with an occupant, but with an organisation approved by the Ministry of Housing. That organisation becomes your sole tenant. It selects the occupant, supports them with social-sector professionals, and pays you the rent whether the dwelling is occupied or not.
Thirty-five organisations currently hold an agreement: municipalities, groups of municipalities, social offices, foundations and non-profits. In the south of the country they include the Kordall intermunicipal syndicate (SIKOR), the City of Esch-sur-Alzette, the social offices of Schifflange, Dudelange and Bettembourg-Frisange-Roeser, plus national players such as the Fondation pour l'accès au logement and the Luxembourg Red Cross.
A 90% tax exemption: the figure many pages still have not updated
This is the point that justifies this article. The exemption rate was raised by the law of 22 May 2024, and a number of information pages, including official ones, still show the previous 75% rate. The reference text comes from the Luxembourg direct tax administration (ACD): from tax year 2024 onwards, 90% of the net rental income received from an approved GLS organisation is exempt from income tax.
| Tax years | Exempt share of net rental income |
|---|---|
| 2017 to 2022 | 50% |
| 2023 | 75% |
| Since 2024 | 90% |
The legal basis: Article 115, number 22a of the Luxembourg income tax law (LIR), as amended by the law of 22 May 2024 on measures to revive the housing market, detailed in circular L.I.R. n° 115/10.
The nuance that matters: the exemption applies to net rental income, after deducting your costs (loan interest, maintenance, depreciation, insurance), not to the gross rent. That is what makes the regime doubly attractive: you first deduct your costs as usual, then 90% of what remains escapes tax.
Five guarantees for the owner
- Guaranteed rent. The lease is signed with the organisation: the rent is paid every month, even when the dwelling is unoccupied.
- 90% tax exemption on net rental income, since tax year 2024.
- Ongoing maintenance. The organisations have technical teams handling minor repairs and regular inspections. In some cases the dwelling is refreshed before first occupation.
- You can take the property back. If you need it for yourself or your family, you recover it; the organisation rehouses the occupant.
- Zero management. No tenant screening, no chasing payments, no arrears to handle: the occupant is supported by social-sector professionals, and the exit inventory is handled by the organisation.
GLS or private letting: the honest maths
Take a concrete case from our area: a 2-bedroom flat of around 70 m² in Luxembourg's southern belt (Pétange, Esch-sur-Alzette, Differdange). Advertised rents there run at roughly 20 €/m²/month according to the Housing Observatory, so about 1,400 € per month on the private market. Under GLS the rent is set case by case; with a 30 to 35% discount, expect around 950 € per month.
| Private letting | GLS | |
|---|---|---|
| Gross annual rent | 16,800 € | 11,400 € |
| Indicative tax* | ≈ 5,000 € | ≈ 350 € |
| Income after tax | ≈ 11,800 € | ≈ 11,050 € |
| Vacancy, arrears, management | Your problem | None: rent guaranteed |
*Indicative calculation: 40% marginal tax rate, deductible costs estimated at 25% of rent. The outcome depends on your tax situation and actual costs.
The after-tax gap is around 750 € per year, roughly sixty euros a month. Yet a single month of vacancy on the private market costs 1,400 €, nearly double that annual gap. As soon as a property sits empty a few weeks a year, or one tenant defaults, GLS comes out ahead.
Our view from the field: at CARMO Immobilier, the owners for whom GLS makes the most sense are almost always the same profiles: a dwelling that has been empty for months, an inherited property nobody wants to manage, or a landlord worn out by tenant turnover. For them it is not a fallback, it is the most rational tool on today's market.
Torn between letting and selling? The decision takes two numbers: the GLS income on one side, the sale value on the other. An accurate valuation is the starting point. Request yours, free of charge and without obligation.
How to place your property under GLS: four steps
- Contact an approved organisation. The list of 35 partners is published on Guichet.lu and logement.public.lu. Prefer one active in your municipality.
- Visit and rent setting. The organisation visits the property; the rent is negotiated case by case, generally 30 to 40% below market level.
- Sign the lease with the organisation. It is your tenant, not the occupant. The dwelling must be in normal habitable condition; some organisations help with light refurbishment before first occupation.
- The organisation manages, you collect. Occupant selection and support, technical follow-up, inventories: everything is handled. You declare your rents with the 90% exemption on net income.
And for tenants? RENLA in a nutshell
For prospective tenants, access to affordable rental housing goes through RENLA, the national register of affordable housing: a single online registration via MyGuichet.lu opens access to the whole stock, instead of one application per landlord. The main conditions, set by Article 55 of the law: be of legal age, not own another dwelling in Luxembourg or abroad, stay within the income ceilings for your household composition, and hold a right of residence of more than three months.
Looking for a standard rental in the south of the country instead? Browse our properties to rent.
If you are selling, if you are letting
If you are selling
A property under GLS remains sellable, as the lease with the organisation follows the property. But if your dwelling is empty precisely because you are hesitating between selling and letting, do not let indecision choose for you: every month of vacancy has a certain cost, while a sale and GLS each have a measurable return. Get both numbers on the table, then decide.
If you are letting
Private letting keeps a higher gross yield and full freedom in choosing your tenant. In exchange, you accept the management workload, vacancy and arrears risk, and full taxation of your net income. GLS is the option for owners who value security and simplicity; private letting suits those who want to maximise the rent and have time to manage. If you stay private, also read our guide to rent increases in Luxembourg: the rules changed in 2024.
Frequently asked questions
What is the GLS tax exemption rate in 2026?
90% of net rental income, since tax year 2024. The rate was 75% for 2023 and 50% from 2017 to 2022. Beware: several pages online still quote the old rates.
Is the rent really guaranteed if the dwelling is empty?
Yes. The lease is signed with the approved organisation, not the occupant: the rent is owed to you every month, even when the dwelling is unoccupied.
Can I take my property back during the arrangement?
Yes, if you need it for yourself or your family. The approved organisation then rehouses the occupant.
Who handles maintenance and the condition of the property?
The organisation monitors the occupant, carries out minor maintenance and regular inspections. At the end of the lease it draws up the inventory and guarantees the property is returned in its initial condition.
What rent will I receive under GLS?
It is set case by case with the organisation, generally 30 to 40% below the market rent. That is the counterpart of the payment guarantee and the 90% tax exemption.
Who should I contact in the south of Luxembourg?
Among the 35 approved organisations are SIKOR (Pétange and the Kordall area), the City of Esch-sur-Alzette, the social offices of Schifflange, Dudelange and Bettembourg-Frisange-Roeser, the Fondation pour l'accès au logement and the Luxembourg Red Cross.
Thinking of selling? An accurate valuation is the starting point. Request yours, free of charge and without obligation.
Sources
- Luxembourg direct tax administration (ACD), rented property and GLS exemption
- Circular L.I.R. n° 115/10
- Law of 7 August 2023 on affordable housing (Legilux)
- Law of 22 May 2024 on housing market revival measures (Legilux)
- Guichet.lu, opting for social rental management (list of organisations)
- Ministry of Housing, affordable housing FAQ
- Housing Observatory, advertised rents (simulator)
By David Carmo, founder of CARMO Immobilier. Real estate professional since 2008, member of the board of directors of the Chambre Immobilière du Grand-Duché de Luxembourg, of its disciplinary council, and trainer at the Académie de l'Immobilier.
This article is for information purposes only and does not constitute legal or tax advice. Regulations change and every situation is different. Before any decision, check the texts in force and consult your notary or an adviser.