What your bank really checks in 2026

In Luxembourg, lending is supervised by the Financial Sector Supervisory Commission (CSSF), on the recommendation of the Systemic Risk Committee. The genuinely binding measure is the Loan-To-Value (LTV) ratio, the relationship between your loan and the property value:

• First-time buyer, main residence: financing up to 100% of the price possible, excluding costs.
• Other buyer, main residence: 90%.
• Rental investment: 80%.

The debt-ratio myth. Contrary to popular belief, there is no legal debt-ratio ceiling in Luxembourg. The only activated tool is the LTV. Banks generally aim for an effort rate of around 40%, but they reason above all in terms of disposable income left and apply a stress test of 200 basis points on the rate, required by the CSSF. A couple with comfortable income can therefore exceed that threshold if what remains after the monthly payment comfortably covers daily life.

On the market side, the average rate on new home loans has dropped back below 3.1% (3.01% in January 2026 according to the Central Bank of Luxembourg), after two tense years. The window is reopening, but selection remains strict.

The complete file, document by document

A bank that receives an incomplete file is a bank that doubts. Gather everything for the first meeting:

• Identity: valid identity card or passport.
• Stability: employment contract and your last three payslips. Self-employed: last three sets of accounts and tax assessments.
• Taxes: your latest tax return.
• Accounts: the last three statements of all your accounts, current and savings.
• Existing loans: amortisation tables of your loans. If possible, clear small consumer credits before applying.
• The property: the sale agreement signed by both parties and the Energy Performance Certificate (EPC).

Build your down payment by stacking the levers

The down payment remains decisive. Aim at minimum to cover the acquisition costs, around 7% of the price (6% registration duty and 1% transcription), plus the notary's fees.

A concrete example from the south. For a 75 sq.m. apartment in Pétange, at around 6,800 EUR/sq.m., the price is about 510,000 EUR. The duties amount to nearly 35,700 EUR. A first-time buyer couple can, in theory, finance the 510,000 EUR at 100%: they only need to mobilise the costs. And this is where the aids change everything.

Three levers add up:

• The Bëllegen Akt: a tax credit on notarial deeds of 40,000 EUR per person, i.e. 80,000 EUR for a couple. Made permanent since July 2025, it is offset directly against the registration duties. In our example, it absorbs the entire 35,700 EUR of duties: the required down payment melts down to the notary's fees alone.
• The State Guarantee: if you lack a down payment, the State can act as guarantor in place of own funds, up to 303,862 EUR, under conditions (loan covering at least 60% of the project, savings of at least three years topped up by at least 1,000 EUR per year in the same bank).
• The home-ownership grant: from 500 to 10,000 EUR depending on your income and household composition.

One last reflex that reassures the banker: keep a precautionary savings buffer after the purchase. Showing that you still have funds for the unexpected sometimes counts as much as a large down payment.

Energy has become a financing criterion

In 2026, energy performance is no longer a detail, it is a lending parameter. Several banks reserve their best conditions (so-called green rates) for properties rated A, B or C. For a property rated F, G or H, expect a stricter analysis. To convince them:

• Include the cost of energy renovation works in your financing plan.
• Provide professional quotes and look into the available aids (Klimabonus, renovation grants).
• Show that the future rating will add value to the property, and therefore to the bank's mortgage security.

Cross-border buyers from France and Belgium: what changes

Buying in Luxembourg while living across the border is possible, but the rules are not those of your home country. The table below sums up the essentials.

For a cross-border buyer, the Luxembourg bank will look closely at job stability and disposable income. A clear file, here too, speeds everything up.

Take the posture of a partner, not a petitioner

You are not begging a favour: you are offering a financial partner a profitable and secure collaboration. Three reflexes:

• Mind your statements: avoid any major purchase (car, expensive furniture) in the six months before applying.
• Highlight your employability, especially in a strong sector (finance, IT, healthcare), and your prospects for advancement.
• Present a clear project: an analyst who understands everything at first glance gives the green light faster, and on better terms.

If you are buying, if you are selling

If you are buying: obtain an agreement in principle from your bank before seriously viewing our properties for sale. You will know your real budget, costs and aids included, and you will negotiate from a position of strength.

If you are selling: a buyer with an agreement in principle means a sale agreement that holds. At CARMO, we check the strength of candidates' financing before you commit, to avoid sales that collapse at the loan stage. That, too, is securing your price.

FAQ: mortgages in Luxembourg in 2026

Can you borrow 100% in Luxembourg in 2026?

Yes for a first-time buyer purchasing their main residence: the LTV ratio allows financing up to 100% of the property price, excluding costs. For another main-residence purchase the limit is 90%, and 80% for a rental investment.

What is the maximum debt ratio in Luxembourg?

There is no legal ceiling. Unlike France, Luxembourg has only activated the LTV ratio as a binding measure. Banks generally aim for an effort rate of around 40%, but reason above all in terms of disposable income and apply a 200-basis-point stress test required by the CSSF.

How much down payment should you plan for?

At minimum the acquisition costs, around 7% of the price, plus the notary's fees. The Bëllegen Akt and the State Guarantee can sharply reduce the cash to mobilise on the day of the deed.

How much is the Bëllegen Akt in 2026?

40,000 EUR of tax credit per person, i.e. 80,000 EUR for a couple, on the registration duties of a main residence. The amount has been permanent since July 2025.

Does the energy rating affect the loan?

Yes. Properties rated A to C often qualify for the best conditions, while a property rated F to H triggers a stricter analysis, with renovation works built into the financing plan.

Can a cross-border worker borrow to buy in Luxembourg?

Yes. The bank will mainly examine job stability and disposable income. Aids such as the Bëllegen Akt remain tied to occupying the property as a main residence in Luxembourg.

Official sources

• Systemic Risk Committee (LTV measures): cdrs.lu
• CSSF, macroprudential supervision: cssf.lu
• Bëllegen Akt, Guichet.lu: guichet.public.lu
• State Guarantee, Guichet.lu: guichet.public.lu
• Home-ownership grant, Logement.lu: logement.public.lu
• Sale prices by commune, Housing Observatory: logement.public.lu
• Interest rates, Central Bank of Luxembourg: bcl.lu

By David Carmo, founder of CARMO Immobilier. A real estate professional since 2008, board member of the Real Estate Chamber of the Grand Duchy of Luxembourg, member of its disciplinary council, and trainer at the Real Estate Academy.

This article is for information only and does not constitute legal advice. Regulations change and every situation is specific. Before any decision, check the rules in force and consult your notary or an adviser.