Estimate the prepayment penalty
Anyone repaying their loan within the fixed-rate period — for example when selling the property — usually pays the bank a prepayment penalty. This estimate gives a rough order of magnitude; the bank calculates by its own method.
Information
The prepayment penalty is the bank's interest loss: the difference between your contractual rate and what the bank would still earn today from a safe reinvestment, over the remaining fixed-rate period. Banks calculate it using the asset-liability or asset-asset method; special repayment rights and saved costs reduce it. Important: under §489 BGB you may terminate a loan ten years after full disbursement, with six months' notice, without a prepayment penalty.
Rough order of magnitude
Enter the remaining debt, remaining fixed-rate period, your contractual rate and an assumed reinvestment rate.
A very rough approximation, not a legally binding calculation. Banks calculate by their own method (asset-liability / asset-asset); special repayment rights, saved administrative and risk costs and the exact interest structure reduce the amount. Under §489 BGB, termination with six months' notice without penalty is possible ten years after full disbursement. This is not legal advice.