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Property investment: mortgage vs cash purchase comparison

Buying a rental property with a mortgage or cash in Belgium: advantages, disadvantages, detailed simulation and criteria for choosing each strategy.

EH Par Edouard Hennin 2 min de lecture Mis a jour le May 28, 2026
Sommaire · 4 sections Reduire ▴

Direct comparison: credit vs cash

For a property at EUR 200,000 with a rent of EUR 900/month:

CriterionCashCredit (80 %)
Equity investedEUR 200,000EUR 50,000
Monthly cash flow+EUR 700+EUR 50
Return on equity4.2 %9.6 %
Financial riskLowMedium
Remaining available capitalEUR 0EUR 150,000
Interest deductionNoYes

Credit offers a better return on equity but lower monthly cash flow. Cash offers security and a higher immediate income.

Advantages of investing with credit

The leverage effect

The leverage effect multiplies the return on equity. With EUR 200,000, you can buy 1 property for cash or 4 properties on credit (EUR 50,000 down payment each).

Tax deduction of interest

Mortgage interest is deductible from real estate income in Belgium. This deduction can completely cancel the tax on cadastral income in the early years.

Capital preservation

Keeping capital allows you to seize other opportunities, build a cash reserve or diversify your portfolio.

Advantages of buying for cash

Immediate and maximum cash flow

Without mortgage payments, cash flow is immediate and high. This is the ideal strategy for generating a supplementary income.

Zero rate risk

No credit means no rate risk. In periods of high or uncertain rates, cash protects against yield erosion.

Easier negotiation

A cash buyer is more attractive to the seller: no suspensive financing clause, shorter completion time.

[!tip] Practical tip Even when buying for cash, always keep a 6-month reserve for unexpected expenses (works, vacancy, disputes).

Which to choose

If the property yield exceeds the cost of credit: favour borrowing. If rates are high or you want maximum immediate income: cash makes sense. In all cases, consult an adviser to optimise taxation.

To manage your properties, use a rental management software. Consult the rental investment guide and create your lease online.

Verifie & redige par
Edouard Hennin
Real estate expert since 2018, Edouard supports Belgian landlords and tenants through their rental processes. He oversees the writing of every guide in collaboration with the legal team and ensures all content reflects current legislation in Brussels, Wallonia and Flanders.
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Publie May 19, 2026
Derniere verification May 28, 2026
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