How high should the monthly mortgage payment be?

A common rule of thumb is that your monthly mortgage payment should not exceed 35% of your household net income. For a net income of 4,000 EUR, that would be a maximum of 1,400 EUR per month. Many financial advisors recommend staying at 30% to maintain a buffer for unexpected expenses, repairs, or temporary income loss. Additionally, keep at least 3 monthly payments as an emergency reserve.

What is the minimum equity I need?

Ideally, you should bring 20-30% of the purchase price as equity. At a minimum, purchase costs (8-15% depending on the federal state) must be covered with your own funds, as banks typically do not finance these. A 100% mortgage without equity is possible with some banks but comes with significantly higher interest rates and greater risk. The more equity you contribute, the better your interest rate conditions will be.

What are purchase costs and how high are they?

Purchase costs are additional costs on top of the property price that apply to every real estate transaction. They consist of: property transfer tax (3.5-6.5% depending on the federal state), notary and land registry fees (approx. 1.5-2%), and potentially broker fees (3.57-7.14% incl. VAT). In total, expect 8-15% of the purchase price in additional costs. These should be paid entirely from equity, as they do not increase the property value.

What is the difference between nominal and effective interest rate?

The nominal interest rate (Sollzins) is the pure interest rate the bank charges for the loan. The effective interest rate (Effektivzins) additionally includes all other costs such as processing fees, account management fees, and the effect of repayment scheduling. The effective rate is therefore always slightly higher than the nominal rate and reflects the true annual cost of the loan. Always compare offers based on the effective interest rate, as only this allows a fair comparison.

Is a longer fixed-rate period worth it?

A longer fixed-rate period (e.g., 15 or 20 years instead of 10) typically costs a rate premium of 0.2-0.5 percentage points. In return, it protects against rising interest rates and provides planning certainty over a longer period. In a low-interest-rate environment, a long fixed-rate period is particularly advisable as you lock in favorable conditions long-term. When rates are high, a shorter period may make more sense if you expect rates to fall.

What happens when the fixed-rate period ends?

When the fixed-rate period expires, the remaining debt must be refinanced - this is called Anschlussfinanzierung. You can request a new offer from your current bank (prolongation) or switch to a different bank (refinancing). The follow-up financing is then at the current market rate, which may be higher or lower. With a forward loan (Forward-Darlehen), you can lock in favorable rates for your refinancing up to 5 years in advance.

How much do I save with extra repayments?

Extra repayments can significantly reduce interest costs. Example: On a loan of 300,000 EUR at 3.5% interest and 2% repayment, an annual extra repayment of 5,000 EUR saves tens of thousands of euros in interest over the full loan term. At the same time, the loan term is shortened by several years. Most contracts allow 5-10% extra repayment per year. Use this option whenever you have the financial flexibility.

Can I buy a property without equity?

Yes, some banks offer 100% financing or even 110% financing (including purchase costs). However, interest rates for full financing are significantly higher - often 0.5-1.0 percentage points above the rate with 20% equity. The risk is also greater: if property values decline, you could quickly owe more than the property is worth. Full financing should only be considered if you have a high, stable income.

What subsidies are available for home buyers in 2026?

Germany offers various subsidy programs: KfW provides low-interest loans for energy-efficient construction and renovation (e.g., KfW program 261). For families with children, there are successor programs to the Baukindergeld that vary by federal state. Additionally, some federal states support the purchase of owner-occupied housing with their own programs. Check with your municipality and KfW for current funding opportunities.

How does the repayment rate affect the loan term?

The repayment rate has an enormous impact on the total loan term. At an interest rate of 3.5%, it takes about 46 years to fully repay the loan with an initial repayment rate of 1%. With 2% repayment, it takes about 30 years, and with 3% repayment only about 24 years. Each additional percentage point of repayment saves tens of thousands of euros in interest over the loan term. A minimum initial repayment rate of 2%, ideally 3%, is recommended.

How Much Equity Do I Need to Buy a House in Germany? | Mortgage Calculator

Equity for a House Purchase: The Crucial Question

The question of how much equity to bring is one of the most important aspects of mortgage financing in Germany. The basic principle is clear: the more equity you contribute, the better your interest rate conditions and the lower your financial risk. But how much equity is truly necessary, and what actually counts as equity? This article provides clear guidance for prospective buyers.

The Rule of Thumb: 20 to 30 Percent

Financial experts recommend bringing at least 20 to 30 percent of the purchase price as equity. Of this, the purchase costs of 8 to 15 percent must be covered from your own funds, as banks generally do not finance them. The remaining 10 to 15 percent serves to lower the loan-to-value ratio and thereby secure better interest rate conditions. On a purchase price of 400,000 euros, that translates to 80,000 to 120,000 euros in equity.

The impact of equity on the interest rate is significant. Banks internally calculate with different lending thresholds: up to 60 percent loan-to-value gets the best conditions, up to 80 percent a moderate premium, and above that rates rise noticeably. The difference between a mortgage with 30 percent equity and full financing can be 0.5 to 1.0 percentage points in the interest rate, which over the full loan term amounts to several tens of thousands of euros.

What Counts as Equity?

Beyond classic savings in checking and savings accounts, other asset types also count as equity. These include: balances in building society contracts (Bausparvertrag), securities such as stocks, funds, and ETFs, surrender values of life insurance policies, existing mortgage-free properties, private loans from relatives, and personal labor contributions when building a home (the so-called Muskelhypothek or sweat equity). Banks typically recognize personal labor contributions only up to about 15 percent of construction costs and only for demonstrable trade skills.

Employer loans can also serve as equity. Some companies offer their employees low-interest or interest-free loans for property purchases. Be aware, however, that these loans may need to be repaid upon changing jobs. Government-subsidized loans such as KfW loans are not counted as equity but rather as debt financing.

Full Financing: Opportunities and Risks

A 100 percent mortgage or even 110 percent financing (including purchase costs) is available from some banks, particularly for borrowers with above-average and secure income, such as civil servants or public sector employees. The requirements are strict: a very good and stable income, a flawless credit history (Schufa), a valuable property in a good location, and typically a younger age of the borrower.

The risks of full financing should not be underestimated. Interest rates are significantly higher, the monthly burden increases accordingly, and any decline in property value can quickly create a situation where the remaining debt exceeds the property's worth. In such cases, the bank may demand additional collateral or refuse further financing. Those who still wish to buy without equity should at minimum choose a high repayment rate (at least 3 percent) and make consistent extra repayments.

Building Equity: Strategies

If you plan to buy in a few years, start building assets systematically and early. A standing order to a separate savings account ensures discipline. Employer savings contributions (vermoegenswirksame Leistungen) can flow into a building society contract or investment savings plan. For a time horizon of three to five years, broadly diversified global equity ETFs are suitable, though you should gradually shift toward safer investments as the target date approaches.

A building society contract (Bausparvertrag) can be useful as proof of equity and offers a rate-guaranteed loan after allocation. However, savings interest rates are low and closing fees (1 to 1.6 percent of the contract amount) add to costs. Evaluate individually whether a building society contract or open-market savings is economically more favorable. Do not forget to keep an emergency reserve of three to six monthly salaries that should not flow into the property financing.