Belgian mortgage refinancing 2026 : is it worth it?
Compare your current mortgage to a new rate, at an identical remaining term. Interest savings, early repayment penalty, break-even point. Free.
Your current loan
Shown on your annual statement or banking app.
The number of monthly payments you still have left.
External refinancing adds the cost of a new mortgage credit deed (registration duties + notary).
Indicative legal cap: €350 for a mortgage loan.
Enter your outstanding balance and rates to compare.
Trap #1: comparing different terms
A refinancing offer showing a lower monthly payment can look attractive while extending your loan by several years, which increases the total cost despite a lower rate. This simulator therefore locks the remaining term on both sides: it's the only way to compare one real cost to another.
The early repayment penalty, often discovered too late
Repaying a mortgage early has a cost: the early repayment penalty, legally capped at 3 months' interest on the outstanding balance. This amount can run into hundreds or thousands of euros , it is shown here as its own line, never diluted into an overall total.
Internal or external: two different cost structures
Renegotiating with your current bank (internal) avoids the cost of a new notarial deed. Switching banks (external) requires a new mortgage credit deed, with its own registration duty (1%) and mortgage registration duty (0.30%) on the borrowed amount (increased by 10% for accessories), plus notary fees for releasing the old mortgage and the new deed.
What this simulator does not cover
Variable rates, debt consolidation, takeover of an existing loan balance, retained or lost tax housing benefit, and outstanding balance insurance.
Frequently asked questions
Why does the term stay identical in the comparison?
This is the most common trap on the market: extending the term lowers the monthly payment, giving an impression of immediate savings, but often makes the total interest cost explode. To compare two options honestly, the same remaining term must be kept on both sides.
What is the early repayment penalty?
This is the fee your bank can charge for early repayment of your loan. It is legally capped at 3 months’ interest, calculated on the outstanding balance, at your contract’s current rate.
What is the difference between internal and external refinancing?
Internal: you renegotiate with your current bank, only the early repayment penalty and any handling fees apply. External: you switch banks, a new mortgage credit deed is required, with its own registration duty (1%) and mortgage registration duty (0.30%), on top of notary fees (release of the old mortgage + new deed).
Why do I need to enter the notary fees myself?
The fees for the release deed and the new credit deed depend on many factors specific to your file and your notary's office, notaire.be only publishes an interactive calculator, not a fixed, verifiable schedule. Rather than guess a percentage, we point you to their official simulator for a reliable amount.
Can a variable rate be compared with this tool?
No. Comparing a variable rate would require guessing its future evolution, which this tool never does. It only compares two fixed rates.
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