How do mortgage rates affect the return on investment when buying a commercial property?

Analysis: Interest rates as the pacemaker of profitability

To fully understand the impact of mortgage interest rates on returns , we need to consider the different levels of return calculation. Mortgage interest rates affect both the direct cash flow and the abstract return on your invested capital in different ways.

The leverage effect: friend or foe?

The strongest influence of mortgage interest rates on returns is seen in the so-called leverage effect.

The principle is simple: As long as the total return on your property (net rental income relative to the purchase price) is higher than the mortgage interest rate, you're working profitably with the bank's money. You're making a profit on borrowed money. This leverages your return on equity upwards.

• Positive leverage: The property yields 4.5%, the mortgage costs 2.0%. The impact of mortgage interest on the return is positive. The surplus is yours.
• Negative leverage: Interest rates rise to 5.0%. Now the mortgage costs more than the house generates. The impact of mortgage interest on returns becomes negative. You're paying more for every franc borrowed. Your return on equity plummets, often even into negative territory.

Especially with commercial properties, where leases are often long-term and indexed, you can't immediately increase the rent when interest rates rise. The negative impact of mortgage interest rates on returns therefore fully reduces your profit.

Cash flow vs. book profit

The impact of mortgage interest rates on returns is most noticeable in your bank account.

Cash flow is what remains after deducting all costs (including interest and amortization) .

• If interest rates rise from 1.5% to 3.0%, your interest burden doubles.
• Since commercial real estate often involves high amortization payments (mandatory repayments), a rising interest rate can completely dry up the cash flow.

The impact of mortgage interest rates on returns means, specifically: you may still have a profit on paper (book profit), but no liquidity left to pay for repairs.

The impact on the market value (cap rate)

An often underestimated aspect is the indirect influence of mortgage interest rates on returns via the property value.

Investors evaluate commercial real estate based on expected returns. If mortgage rates rise (and thus the yield on safe government bonds), investors also demand a higher return for the risk associated with real estate.

• The consequence: If the required return on investment increases, the purchase price must decrease (assuming the same rent).
• When interest rates rise, prices for commercial properties often fall.

have a massive impact on returns in terms of total return. Those forced to sell realize losses.

The risk of refinancing

Commercial loans often have terms of 5 to 10 years. When a fixed-rate mortgage expires, the impact of mortgage interest rates on returns is severe.

If you have to renew a mortgage from 1.0% to 4.0%, your costs will triple overnight.

• Many commercial investments that were “on a knife's edge” collapse at this point.
• The impact of mortgage interest rates on returns can lead to the bank demanding additional funds (more equity) because affordability is no longer guaranteed with the new interest rates.

Strategies for mitigating the impact

Is it possible to minimize the impact of mortgage interest rates on returns ?

• High equity: The less debt, the less impact mortgage interest rates have on returns . For commercial properties, banks often require 40-50% equity anyway.
• Indexed leases: In the commercial sector, leases linked to the national consumer price index (CPI) are common. If interest rates and inflation rise, you are allowed to increase the rent. This partially offsets the negative impact of mortgage interest rates on returns .
• Maturity matching: Try to align the mortgage term with the lease term. If you have a tenant committed for 10 years, take out a 10-year fixed-rate mortgage. This way, you factor in the impact of mortgage interest rates on your return and secure your profit margin.

Conclusion

The question "How do mortgage rates affect returns?" is crucial in the commercial sector. The impact of mortgage rates on returns is the most powerful lever in your calculations. Rising interest rates erode cash flow, reverse the leverage effect, and often even depress property prices.

Those investing in commercial real estate shouldn't count on favorable interest rates. You need to conduct stress tests: What happens to my mortgage interest rate's impact on returns if the rate rises to 4 or 5 percent? Will the property still be self-sustaining? Only those with sufficient equity and who strategically link the fixed interest rate period to the lease agreements can manage the volatile impact of mortgage interest rates on returns and achieve long-term profits.

If you want to simulate how different interest rate scenarios affect your cash flow or which banks currently offer the best margins to minimize the negative impact of mortgage interest rates on returns , Loft provides professional calculation tools and market comparisons.

Glossary

• Leverage effect: The impact of debt financing on the return on equity. If the total return is higher than the loan interest rate, the influence of mortgage interest on the return has a positive effect (boost).
• Cap Rate (Capitalization Rate): The ratio of net rental income to purchase price. It usually rises when interest rates rise, which leads to falling property values.
• Cash flow: The surplus from rental income after deducting all costs (including interest). The impact of mortgage interest rates on returns is directly reflected in the liquidity.
• Maturity matching: The strategy of aligning the financing term with the lease term to neutralize interest rate risk.
• Spread: The difference between the rental yield and the mortgage interest rate. The larger the spread, the lower the risk from the influence of mortgage interest rates on the return .