How Much Can I Borrow Based on My Salary in Belgium?

When you start making plans to buy a home, the first question is almost always: how much can I borrow based on my salary? Your salary, combined with your fixed costs and personal contribution, determines the maximum amount your bank will be willing to finance. Banks and credit brokers work with a number of rules of thumb: your total monthly repayments generally may not exceed 30-40% of your net household income, and in most cases the bank finances a maximum of 90% of the property value. In this guide we explain how this works and give concrete examples per income level.

1. The basics: how much of your salary can go towards loans?

The core question behind how much can I borrow based on my salary is: what share of your salary can go towards credit repayments without putting you in financial difficulty?

Sources and banks apply similar limits:

• NB Projects and other experts: 30-35% of your net household income as a safe limit for your mortgage.
• KBC Brussels: the total of your monthly credit obligations (all loans combined) should ideally not exceed 40% of your net income.
• Keytrade Bank: uses 45% of your net income as the upper limit for the monthly repayment in its examples, depending on your profile.
• Hypotheekwereld: banks generally apply a limit whereby your mortgage may amount to a maximum of 40-50% of your net income, with some margin for strong files.
• Defa mortgage brokers: amortisations up to 40% of net income are commonly allowed, which broadly corresponds to a loan of roughly €300,000 over 20 years for a profile at that ceiling.

Lenders also look at a minimum living allowance: what you have left after all repayments to cover daily living costs. As a general benchmark, this is around €1,000 for a single person and around €1,200 for a couple, with an additional amount per dependent child. Banks check this minimum remaining income independently of the percentage rule - both conditions must be satisfied simultaneously.

In practice, this means:

• Conservative approach: aim for 30-35% of your net income.
• Slightly more ambitious approach (strong profile, no other debts): up to 40-45%.

Why two different tests matter

The percentage rule and the minimum living allowance can give different results depending on your income level. For a household earning €2,500 net per month, 35% equals €875 - but after paying €875 in mortgage and covering other fixed costs, the remaining budget may fall below the bank's minimum living allowance threshold. This is why lower-income files are sometimes declined even when the percentage ratio looks acceptable on paper. Conversely, a high-income household may be able to allocate 40% to repayments and still have far more than the minimum living allowance left over, giving the bank additional comfort.

2. Loan-to-value: what percentage of the property can you borrow?

Alongside your salary, the loan-to-value ratio (the relationship between the loan amount and the value of the property) also plays a role in how much you can borrow.

Guidelines from the National Bank of Belgium and commercial banks:

• Most banks finance a maximum of 90% of the property value for an owner-occupied home.
• For first-time buyers, a limited share of files may go up to 100% (sometimes slightly more to cover costs, but this is the exception and subject to strict conditions).
• For investment properties, banks typically finance a maximum of 80% of the value.

Concretely: if you buy a property for €300,000, you can in most cases borrow up to approximately €270,000 (90%), and you must finance the remainder plus costs from your own resources.

What does hypotheekwinkel.be say about costs?

According to hypotheekwinkel.be (updated April 2026), there is technically no hard ceiling on the loan amount itself - what ultimately limits you is your income and repayment capacity. On the costs side, their guidance remains consistent with the broader market: assume roughly 10% of the purchase price as a working estimate for transaction costs (registration duties, notary fees, bank charges). So for a property at €300,000, budget around €30,000 on top for costs. This 10% estimate is a conservative average; in Flanders the reduced registration duty rate of 3% for a first own home (in force since 2024) can bring total costs down somewhat, while in Brussels and Wallonia the standard 12.5% registration duty still applies to most purchases.

Interest rates in mid-2026

The interest rate environment has a direct bearing on how much you can borrow at a given repayment level. According to market data from pavimmo.be (June 2026), fixed mortgage rates in Belgium are currently running at roughly 3.2% to 3.7% for standard owner-occupied loans, depending on the lender, the loan-to-value ratio and the loan term. This is meaningfully lower than the peaks seen in 2023, which gives buyers somewhat more borrowing capacity per euro of monthly repayment compared with two years ago. The examples below use a rate range of 3.2%-3.7% as the current realistic benchmark.

3. How much can I borrow based on my salary? Worked examples

The examples below assume "standard" files (no heavy additional loans, normal term and interest rate at mid-2026 levels). They are intended as a rough guide, not as precise bank decisions.

Example 1: Single person, net income €2,500/month

Rules of thumb:

• 30% of €2,500 = €750
• 35% of €2,500 = €875
• 40% of €2,500 = €1,000

Online mortgage simulations show that with a monthly repayment of around €800-€950 (keeping within the 30-38% band), a term of 25-30 years and a fixed rate of around 3.2-3.7%, you can support a loan of roughly €175,000-€230,000. At a 25-year term and 3.5%, a monthly repayment of €900 corresponds to a loan of approximately €185,000-€190,000.

Bear in mind the minimum living allowance test: after paying €875-€900 in mortgage, a single person on €2,500 net has roughly €1,600 left. Once other fixed costs (utilities, insurance, food, transport) are deducted, this is generally workable but leaves limited margin. Banks will scrutinise the full budget carefully at this income level.

Indicative purchase price: with a loan of €190,000 and a 10% personal contribution on the purchase price, the property value would be around €211,000. With 20% own funds, the same loan could support a property at around €237,000 - but then costs must also be covered from savings.

Example 2: Couple, combined net income €4,000/month

NB Projects indicates: with an average net household income of €4,000, your maximum loan is around €320,000-€350,000, depending on the interest rate and term.

Rules of thumb:

• 30% of €4,000 = €1,200
• 35% of €4,000 = €1,400
• 40% of €4,000 = €1,600

With a monthly repayment of €1,300-€1,600, a term of 25-30 years and current rates of around 3.2-3.7%, you will find yourself in practice within the range of €310,000-€375,000 in borrowing capacity. The upper end of that range requires a clean file with no other significant debts.

Indicative purchase price: a loan of €330,000 with 10% own funds corresponds to a property at approximately €367,000. With 20% own funds on top of the loan, the same household could look at properties around €412,000, provided the savings also cover transaction costs.

Example 3: Couple, combined net income €5,000/month

Rules of thumb:

• 30% of €5,000 = €1,500
• 35% of €5,000 = €1,750
• 40% of €5,000 = €2,000

Simulations show that a couple with such a monthly budget can often borrow between €370,000 and €470,000, depending on the interest rate, term and whether other loans are running concurrently. At a 30-year term and 3.5%, a monthly repayment of €1,750 corresponds to a loan of roughly €395,000-€400,000.

Indicative purchase price: a loan of €400,000 with 10% personal contribution points to a property at around €444,000. With 20% own funds, the same loan could reach a property valued at around €500,000 - though transaction costs on a property at that level are substantial and must also be budgeted.

Important: if you already have existing loans (car loan, personal loan, credit card), these are factored into your total credit ratio. This reduces your maximum mortgage amount accordingly. A car loan with a monthly repayment of €250, for instance, directly eats into the 40% ceiling and can reduce your available mortgage budget by €50,000 or more over a long term.

Quick reference table: salary to borrowing capacity (mid-2026 rates, 3.2-3.7%)

Net household income	35% monthly budget	Indicative loan (25 yr)	Indicative loan (30 yr)
€2,000	€700	€140,000-€155,000	€155,000-€170,000
€2,500	€875	€175,000-€190,000	€195,000-€215,000
€3,000	€1,050	€210,000-€230,000	€230,000-€255,000
€4,000	€1,400	€280,000-€310,000	€310,000-€345,000
€5,000	€1,750	€350,000-€385,000	€390,000-€430,000
€6,000	€2,100	€420,000-€460,000	€465,000-€515,000

Figures are indicative only, based on a fixed rate of approximately 3.2-3.7%, no other outstanding credit, and the 35% income rule. Actual bank decisions depend on your full financial profile.

4. The impact of term and interest rate

With the same salary, you can borrow more or less depending on:

• the loan term (20 vs 25 vs 30 years);
• the interest rate (2.8% vs 4.5%, fixed or variable).

A longer term reduces your monthly repayment, allowing you to borrow more at the same income limit; but you pay more interest in total. Rate simulations from banks and comparison websites show that interest rate changes of one percentage point can easily shift your maximum borrowing capacity by tens of thousands of euros.

Concrete illustration

Take a monthly repayment budget of €1,400 and compare three scenarios:

• 20-year term at 3.5%: loan of roughly €240,000
• 25-year term at 3.5%: loan of roughly €290,000
• 30-year term at 3.5%: loan of roughly €325,000

That is an €85,000 difference in borrowing capacity purely from extending the term by 10 years - without changing your income or the interest rate. The trade-off is total interest paid: on a 30-year loan you will pay significantly more interest in absolute terms than on a 20-year loan, even though the monthly cost is lower.

Fixed vs variable rate

Belgian banks offer both fixed and variable (adjustable) rate mortgages. With a variable rate, the initial repayment is often lower, which can increase your calculated borrowing capacity at the moment of application. However, banks stress-test variable rate applications at a higher rate to protect against future increases, so the actual approved amount may be more conservative than the headline figure suggests. For most first-time buyers in Belgium, a fixed rate provides more predictability and is currently preferred by the majority of applicants.

5. Personal contribution: how much do you need?

Alongside the question of how much can I borrow based on my salary, there is another one: how much do I need to put in myself?

Guidelines:

• Banks generally expect at least 10% personal contribution on the purchase price (the bank typically finances a maximum of 90%).
• In practice, 20% of your own funds is often healthier, as it also allows you to cover part of the costs (registration duties, notary fees, bank charges) from your savings.

Immomakelaarvergelijker sums it up: banks standardly finance a maximum of 90% of the property value; you contribute the difference plus the costs.

Breaking down the costs: what do you actually need in savings?

For a property at €300,000, here is a realistic breakdown of what you need to bring to the table in mid-2026:

• Own contribution (10% of purchase price): €30,000
• Registration duties: €9,000-€37,500 depending on region and whether first-home reductions apply (3% in Flanders for first own home since 2024; 12.5% standard in Brussels and Wallonia)
• Notary fees: approximately €3,000-€5,000
• Bank charges and mortgage deed: approximately €2,000-€3,500
• Total minimum savings needed (Flanders, first home): roughly €45,000-€50,000
• Total minimum savings needed (Brussels/Wallonia, standard rate): roughly €70,000-€80,000

This is why many advisers recommend having at least 20% of the purchase price saved before you start house-hunting seriously - that buffer absorbs both the own contribution and the bulk of the transaction costs.

Can you borrow without any personal contribution?

Technically possible in limited cases: some lenders will consider a 100% loan (or even slightly above 100% to cover costs) for borrowers with a very strong income, stable employment and no other debts. However, since the National Bank of Belgium tightened its macroprudential guidance, these files are rare and face very close scrutiny. A Reddit discussion (r/belgium) from 2024 echoes what advisers say in practice: most buyers in Belgium are expected to bring at least 20% of the total amount needed (purchase price plus costs) from their own savings.

6. Quick steps to estimate your own maximum

Want to make an estimate in 5 minutes of how much you can borrow based on your salary:

1. Calculate your net household income per month. Include only stable, recurring income - salary, guaranteed bonuses, rental income if declared. Avoid counting one-off payments.
2. Take 30-35% of that amount as the target monthly repayment for your mortgage (40% if you want to calculate on the higher side and you have no other loans running).
3. Use an online mortgage simulator (from ING, KBC, Keytrade or an independent provider) and enter this monthly repayment to see which loan amount corresponds to that repayment, for terms of 20, 25 or 30 years.
4. Check whether you have sufficient personal contribution to reach the purchase price plus costs within the loan-to-value limit (generally a maximum of 90%).
5. Apply the minimum living allowance check: subtract the estimated mortgage repayment from your net income, then deduct your known fixed monthly costs (rent until you move, car costs, existing loans, insurance, subscriptions). The remainder should comfortably exceed €1,000 for a single person or €1,200 for a couple - if it does not, a bank will likely ask you to reduce the loan amount.
6. If you have existing credit, subtract those monthly repayments first from your 40% ceiling before calculating your mortgage budget.

This gives you an initial framework to search for properties in the right price range, before sitting down in detail with a bank or mortgage broker.