Minimum payment

The minimum principal payment is the contractually agreed-upon or bank-required minimum annual principal repayment on a mortgage, expressed as a percentage of the original loan amount. It plays a key role in determining how quickly a loan is repaid and how high the monthly payment will be. In practice, most financial institutions require an initial repayment of at least 1 to 2 percent, although from a financial perspective, a higher repayment amount often makes more sense.

Importance of the Repayment Amount for Borrowers

If you choose the minimum rate of 1 percent, you’ll pay only 250 euros in principal each month on a 300,000-euro loan-the remaining debt barely decreases at first, since the interest portion of the payment dominates. With an interest rate of 3 percent and a 1 percent principal repayment, full repayment takes over 40 years. An initial principal repayment of 3 percent shortens the term to around 25 years and significantly reduces total interest costs. Banks therefore view the minimum principal repayment as a lower limit-it should be exceeded for a sound financing structure.

Specifically, this means: For a loan of 400,000 euros, an interest rate of 3.5%, and an initial principal repayment of 1%, the monthly payment is around 1,500 euros; with 3% principal repayment, it rises to about 2,167 euros. The difference in the monthly payment is manageable-but the difference in the total interest burden and the loan term is dramatic: The borrower making a 1% principal payment pays significantly more interest over the term and bears the refinancing risk for much longer.

Minimum Principal Repayment and Fixed-Rate Period

The amount of principal repayment is particularly important in relation to the fixed-rate period. Anyone who makes only minimal principal repayments and must transition to an interest rate environment with significantly higher rates after the fixed-rate period expires (e.g., 10 years) will face an almost unchanged remaining debt with a significantly higher monthly payment. Refinancing risks can be significantly reduced by making higher principal payments from the start. Some banks therefore set the minimum principal payment based on the loan’s maturity and the term of the fixed-rate period.

As a rule of thumb: The initial principal payment should be calculated so that the remaining debt at the end of the fixed-rate period is at least 20% below the original loan amount. For a 10-year fixed-rate period, this means a minimum repayment of 2% at a 3.5% interest rate. Those planning for a 15- or 20-year fixed-rate period have more time and can start slightly lower if necessary-but even then, a 1% minimum repayment is generally too low given the interest rate environment of 2025/2026.

Special Repayment Rights as a Supplement

Many loan agreements allow for annual special repayments of 5 to 10 percent of the original loan amount. This option makes sense for borrowers who want to keep their monthly payments manageable but wish to pay down the loan more quickly when they receive bonus payments or inheritances. Those who actively use special repayment rights can raise the effective repayment rate significantly above the contractual minimum without permanently increasing the monthly payment.

The special repayment right should be explicitly agreed upon when the contract is signed-it is not automatically included. Some banks limit the annual special repayment right to 5%, while others allow 10% or more. For borrowers who anticipate variable income components (bonuses, dividends, inheritances), a high special repayment right is more valuable than a slightly lower interest rate without this flexibility.

Practical Tip for Homeowners in Nuremberg and Franconia

In the current interest rate environment (as of 2025/2026), financing costs have risen compared to the years of low interest rates. Buyers in Nuremberg, Erlangen, and the surrounding area who are financing a property between 400,000 and 600,000 euros should agree with their bank on an initial repayment of at least 2 to 3 percent. We work with experienced independent mortgage brokers and can refer you to them if needed to find the optimal repayment structure for your situation.

Frequently Asked Questions

What happens if I only make the minimum repayment?

The loan term is very long, and the total interest costs are high. Additionally, there is a risk that significantly higher interest rates will prevail when the fixed-rate period expires, and the subsequent refinancing will greatly increase your monthly payments.

Can I adjust the repayment amount during the term?

Many banks allow for a one-time or multiple adjustments to the repayment rate during the fixed-rate period. Before signing the contract, check whether and how often this option can be used-it gives you flexibility in the event of changes in your income situation.

Is a repayment amount higher than the minimum always advisable?

Generally speaking, yes, as long as the monthly payment remains sustainable over the long term and sufficient liquidity reserves remain. For investors, it may make tax sense to keep repayments moderate in favor of reserves for further investments-in this case, individual tax advice is worthwhile.

How does a higher repayment amount affect total interest costs?

The effect is significant: For a loan of 300,000 euros at a 3.5% interest rate, a 1% repayment rate over the entire term results in approximately 250,000 euros more in interest than a 3% repayment rate. Even with a shorter term and the same interest rate, the difference in total interest costs amounts to several tens of thousands of euros.

Is a forward loan strategy worthwhile for planning the minimum principal repayment in the long term?

A forward loan allows you to lock in the interest rate for the follow-up financing up to five years before the current fixed-rate period expires. Anyone who knows today that their fixed-rate period ends in 2028 or 2029 and expects interest rates to rise further can take out a forward loan with a slight interest rate premium (typically 0.01 to 0.05% per month of lead time). This is a relevant strategy for homeowners in Nuremberg who financed their homes during the low-interest-rate years of 2015 to 2021 and will need to refinance in the coming years. The minimum repayment amount for the forward loan should be set high enough to ensure that the loan is reduced to a predictable remaining balance by the time the borrower retires. In practice, we recommend conducting a affordability check based on the new interest rate when determining the repayment amount for the forward loan and comparing the monthly payment with the previous one.

Minimum Repayment for KfW Subsidies

Anyone financing their property in Nuremberg through KfW programs (e.g., BEG Residential Buildings, Climate-Friendly New Construction) should note that KfW loans have their own repayment requirements and interest-only grace periods. KfW programs often provide for two to three grace periods at the beginning, during which only interest is paid. After this phase ends, full repayment occurs over the agreed-upon term. When planning the overall financing, it must be ensured that the combination of KfW loans and bank loans results in a consistent overall repayment structure-and that the minimum repayment on the bank loan offsets the grace period of the KfW loan to avoid creating a shortfall.

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