Home-loan balance comparison
Current loan versus the selected refinance offer
Germany · EUR
Plan Your Next Mortgage Financing Arrangement
Compare your current German mortgage with refinancing or follow-on financing, including switching costs, early-repayment compensation, additional borrowing and rate scenarios.
Refinance offer comparison
Results include the entered break cost, selected cost treatment, cash out and consolidated debt
| Scenario | Rate | Term | Loan amount | Payment | Upfront cost | Break-even | Balance at horizon | Horizon result |
|---|
New-rate sensitivity
How Offer A changes if its interest rate is higher or lower
| Rate change | New rate | Monthly repayment | Break-even | Horizon result |
|---|
Planning estimate only—not a lender quote, payout statement, valuation, tax calculation, credit decision or recommendation. Confirm early-repayment compensation, discharge and land-register fees, valuation, lender conditions and loan terms.
German refinancing guide
Compare the payment, switching costs and remaining debt
A lower interest rate can make refinancing appear attractive, but the monthly payment alone does not show the full impact. A longer repayment term, additional borrowing or financed fees can increase the remaining debt later. This Germany mortgage refinance calculator compares two offers with the option of keeping the existing loan, all measured at a shared comparison date.
Use figures from actual quotations whenever possible. The displayed rates and costs are editable examples, and the result is a modelled comparison rather than an offer or recommendation.
Anschlussfinanzierung, Prolongation and Umschuldung
Anschlussfinanzierung refers to follow-on financing for a balance remaining after a fixed-interest period ends. Continuing with the current lender is often called a Prolongation, while transferring the balance to another lender is an Umschuldung. Compare the payment terms and costs of both options. See Interhyp’s follow-on financing guide.
The calculator treats refinancing as beginning at the comparison date. It does not project a future switch, a forward-loan waiting period or a rate reset. Each entered rate remains constant for its modelled repayment period. The terms represent full repayment periods, not only the length of the next fixed-interest agreement.
If your fixed-interest period is ending, do not assume the previous rate will continue. Use a realistic continuation offer for the baseline, or recognise that keeping the old rate is only a hypothetical benchmark.
Enter the balance you would actually refinance
Begin with the current outstanding loan balance. Any additional cash or debts to consolidate are added to it. For example, €300,000 outstanding plus €20,000 cash out results in €320,000 of new borrowing before financed costs. If €3,000 of switching costs are added to the loan, the new principal becomes €323,000.
Leave the current-payment field at zero to calculate a payment consistent with the entered balance, rate and remaining term. A manually entered payment is used as supplied, so check that it matches the term. The model stops current-loan payments at the entered term and does not automatically correct an inconsistent schedule.
Early-repayment compensation and switching costs
Leaving a fixed-rate agreement early may involve Vorfälligkeitsentschädigung. Enter a quote from your current lender rather than assuming a percentage. Whether a charge applies depends on the circumstances; the calculator does not determine contractual or statutory rights. Dr. Klein’s refinancing guide outlines common routes.
For fixed or split loans, the entered compensation is applied to both new offers. For a variable-rate selection, the model ignores that field and applies zero compensation. This is a calculation assumption, not a legal conclusion that switching costs are always zero. Include other quoted costs in the appropriate offer’s switching-cost field.
Select whether costs are paid upfront or added to the loan. Financing costs avoids an initial cash payment but increases the balance on which interest is calculated. The same cost-treatment choice applies to both offers.
Read payment break-even as a limited cash-flow measure
The simple break-even divides upfront costs by the monthly payment improvement and rounds up to whole months. Upfront costs of €2,400 and a €100 monthly improvement give 24 months. With no positive monthly improvement, there is no payment-based break-even.
If costs are financed, the display shows no upfront recovery period. This does not mean the refinance is cost-free. The shortcut does not measure total interest effects and assumes the payment improvement lasts long enough to recover the costs.
What the horizon result and offer ranking mean
The horizon comparison includes modelled payments, remaining balances and upfront costs. It also adjusts for entered cash-out and consolidation amounts. This helps distinguish a lower payment from faster debt reduction, but it is not a discounted cash-flow analysis or an investment forecast.
The headline selects whichever refinance offer has the higher modelled result. It may still select an offer even when both are worse than keeping the current loan. Read “ahead” or “behind” rather than focusing only on the offer name. The summary and balance chart follow the selected offer; the rate-sensitivity table always tests Offer A.
For the clearest comparison, choose a horizon within both repayment terms. The model limits payment periods by the entered terms rather than detecting every possible early payoff from a manually supplied current payment.
Debt consolidation needs an additional check
The monthly payments replaced field improves the displayed cash-flow comparison, but the calculator does not collect each other debt’s interest rate, remaining term or future balance. It assumes those replaced payments continue over the old mortgage comparison period. The result is therefore not a complete cost comparison of consolidating those debts.
First compare the mortgage offers with cash out and consolidation set to zero. Then add those amounts to see how the new loan, repayment and LTV change. Use separate debt schedules before drawing conclusions about overall savings.
The rate stress buffer applies a higher constant rate to the selected offer; it is not a German lender’s affordability decision. For related planning, use the Germany mortgage calculator or Germany LTV calculator.
Germany mortgage refinancing FAQs
What is Anschlussfinanzierung?
It is follow-on financing for the mortgage balance remaining when the current fixed-interest period ends. It may be arranged with the existing lender or another bank. This calculator compares entered scenarios from their assumed start; it does not automatically schedule a future switch.
Does the calculator determine my early-repayment compensation?
No. Enter a current lender quote. The model applies that amount to fixed or split loans but ignores it when Variable rate is selected. Other switching costs are entered separately. These assumptions do not determine your contractual or statutory rights.
What happens when I add switching costs to the new loan?
The costs increase the new principal and are included in the repayment calculation. Upfront cash for those costs becomes zero, but interest is then charged on the larger balance. No upfront recovery period does not mean there is no cost.
How is payment break-even calculated?
Upfront costs are divided by the positive monthly cash-flow improvement and rounded up to whole months. For example, €2,400 divided by €100 gives 24 months. The figure assumes that improvement continues and is not a calculation of lifetime interest savings.
Can the higher-ranked offer still be worse than keeping my loan?
Yes. The calculator ranks the two refinance offers against each other. If both have a negative horizon result, the higher-ranked offer still falls behind the existing-loan scenario. Check the amount shown as ahead or behind.
Should I enter the new fixed-interest period as the loan term?
The term here means the full repayment period. The model assumes constant rates and does not reset the rate after a shorter fixed-interest period. Entering that shorter period as the term instead models full repayment within it.
Why might the headline offer differ from the rate-sensitivity table?
The headline and balance chart follow whichever offer has the higher horizon result. The rate-sensitivity table always changes Offer A’s rate while keeping its other inputs. The two sections can therefore refer to different offers.
Does the result fully compare the cost of consolidating other debts?
No. Consolidated debt increases the new loan and replaced payments affect cash flow, but the calculator does not model each old debt’s rate, remaining term or future balance. Review separate debt schedules before treating the result as a consolidation saving.