What distinguishes the first and second mortgage?

In practice the first mortgage covers the lower‑risk portion of the financing. It typically extends to about two thirds of the relevant lending value. That value is conservatively derived from the market value by the bank. Anything financed beyond that is considered a second mortgage. Many institutions set the total maximum loan‑to‑value (LTV) at around 80 percent. Borrowers who contribute more equity need less or no second mortgage.

The two ranks differ in price and repayment obligations. Because of its better security, the first mortgage is generally cheaper and often does not have to be amortized. The second mortgage is more expensive and usually must be amortized. It is common for the higher financing portion to be reduced within about 15 years or by retirement so that the LTV is again roughly two thirds. Amortization is done directly via repayments or indirectly via pillar 3a, by pledging the pension assets.

There are also differences in interest design. Both ranks can be arranged as fixed‑rate mortgages or as money‑market‑referenced SARON mortgages. Because the second mortgage carries a higher risk premium, the interest margin there is usually higher. Many clients split financing into tranches with different maturities. That way part of the interest cost can be fixed while retaining flexibility. It is important to align maturities so that unwanted dependencies do not arise at renewal.

The ranking also affects affordability and financial resilience. The higher the LTV, the more sensitively the budget reacts to interest changes and the stricter the bank’s internal requirements. If the market value of the property falls markedly, the calculated LTV increases. On renewals the bank may then require additional amortization or more equity. Conversely, faster repayment of the second rank improves key ratios and creates reserves for maintenance and unexpected expenses.

In practice this means: with sufficient equity the financing remains entirely in the first rank. That reduces interest costs and creates room to manoeuvre. If a second mortgage is necessary, a clear amortization plan and comparing several offers are worthwhile. Independent mortgage experts and brokers can help find the right mix of tranches, maturities and amortization method and negotiate conditions across the market.