A residual debt when selling your home occurs when the sale price is lower than the outstanding mortgage balance. You sell your property, but the proceeds aren’t enough to pay off the mortgage in full. The difference that remains is called the residual debt. This can happen with properties that have fallen in value or when the mortgage is high relative to the property’s value. In this article, we answer the most frequently asked questions about residual debt, so you know exactly where you stand.
How does a residual debt arise when selling your home?
A residual debt arises when the proceeds from the sale of your property are lower than the amount you still owe the bank. If your home sells for $280,000, for example, but your outstanding mortgage is $310,000, you are left with a residual debt of $30,000.
There are several situations that can lead to a residual debt:
- Decline in property value: If the housing market drops and your home loses value, the sale price may fall below your outstanding mortgage balance.
- High mortgage at the time of purchase: In the past, it was possible to borrow more than 100% of a property’s value. Anyone who bought a home under those conditions faces a higher risk of a residual debt.
- Interest-only mortgage: With an interest-only mortgage, you pay little or nothing off the principal during the loan term. As a result, the debt remains high even after years of payments.
- Little or no equity built up: If you have owned the property for a relatively short time, you will have paid off very little and built up hardly any equity.
A residual debt is therefore not an exception, but a real risk that depends on the purchase date, the type of mortgage, and developments in the housing market.
Who is responsible for paying the residual debt?
The residual debt is the responsibility of the former owner of the property. As the seller, you are the one who took out the loan with the bank, and that obligation does not automatically disappear upon the sale. You therefore remain personally liable for the remaining amount, even after the property has been transferred to the new owner.
This means the bank will recover the remaining amount from you, regardless of the sale price. In most cases, you agree on a repayment plan with the bank for the residual debt. The bank is willing to do this, but it is important to have this conversation early — preferably before you put your home on the market.
Do you have a National Mortgage Guarantee (NHG)? If so, this can make a difference. If you meet the NHG conditions, the guarantee may cover (part of) the residual debt. However, this only applies if you were required to sell the property due to one of the so-called “life events,” such as unemployment, divorce, or the death of a partner. Always check your mortgage documents to see whether NHG applies to your situation.
What are the options for resolving a residual debt?
There are several ways to resolve a residual debt after the sale of your home. The best option for you depends on your financial situation and the size of the residual debt.
- Repayment plan with the bank: The most common solution is a personal loan or repayment arrangement agreed upon with your bank. You pay off the residual debt in monthly installments over an agreed period.
- Rolling it into a new mortgage: If you are buying a new property, it was until recently possible to include the residual debt in the new mortgage. Check with your mortgage advisor whether and to what extent this is still possible in 2026, as the rules surrounding this change regularly.
- Using personal savings: If you have sufficient savings, you can pay off the residual debt immediately. This avoids additional interest costs and gives you a clean slate.
- Delaying the sale: If market conditions allow, it may be worth postponing the sale until the property’s value has risen and the residual debt is smaller or eliminated entirely.
Always speak with a mortgage advisor before making a decision. They can map out the options for your specific situation.
Is a residual debt tax-deductible?
The interest on a residual debt is tax-deductible under certain conditions. This applies specifically to residual debts that arise from the sale of a primary residence. The interest you pay on this residual debt can be declared as a deductible item in box 1 of your income tax return for a specified period.
Please be aware that the tax rules surrounding mortgage interest deductions have been amended several times in recent years. Always consult a tax advisor or mortgage advisor to determine whether and for how long the interest deduction applies to your residual debt. The tax authorities impose specific requirements regarding the circumstances and the period within which the deduction is valid.
The residual debt itself — that is, the outstanding amount — is not deductible. Only the interest you pay on that debt may potentially qualify for a deduction.
What does the bank do if you cannot pay the residual debt?
If you are unable to pay the residual debt, the bank will take action. The bank has an interest in recovering the money and will initially contact you to work out a solution together. Never ignore this contact, as open communication increases the likelihood of reaching a workable arrangement.
What the bank can concretely do:
- Offer a repayment plan: The bank draws up a repayment schedule tailored to your income and expenses.
- Refer you to debt restructuring: If a repayment plan is not feasible, the bank may refer you to debt counseling services or a formal debt restructuring program.
- Take legal action: As a last resort, the bank may pursue the outstanding amount through the courts. This can result in garnishment of your income or other assets.
Do you have an NHG mortgage and meet the conditions? Then the NHG guarantee takes over the residual debt from the bank, and you repay the amount to the NHG organization — often under more favorable terms. This is an important safety net that many people forget to check.
Seek help early. Local authorities offer free debt counseling, and a mortgage advisor can explore the available options with you before the situation escalates.
How we help with the sale of your property
Preventing a residual debt starts with a strong sales strategy. At Urban Homies, we guide you from start to finish through the sale of your property, helping you achieve the best possible price and avoid unwelcome surprises.
What we do for you:
- Property valuation: We conduct a thorough analysis of market conditions and determine a realistic yet optimal asking price.
- Professional presentation: With professional photography and a tailor-made listing, we showcase your property in the best possible light.
- Sales strategy: We develop a marketing strategy tailored to your property and target audience.
- End-to-end guidance: From the initial strategy consultation to the signing at the notary and beyond, we are with you at every step.
Want to know what your property is worth and how to approach the sale as effectively as possible? Get in touch with us for a no-obligation consultation.
