Interest Rates vs Inflation: How They Really Impact Commercial Property

TL;DR

Interest rates and inflation pull commercial property in opposite directions, and the outcome depends on how your deal is structured. With fixed debt tied to your lease term and rent indexed to CPI, a rate rise barely touches you while higher inflation lifts your rent and value. In my model, the higher-inflation scenario actually produced a better equity return once you net off the small rise in interest.

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The short version

Interest rates and inflation are two competing forces, and on larger commercial assets with meaningful debt, the cost of that debt can have a big impact on your pricing and your return. But commercial property is far less sensitive to the cash rate than residential, and the reason comes down to how the deal is structured. If you want the foundations, start with commercial property investing in Australia.

Here is the first thing. Buyers of commercial property with a lease in place can usually fix their debt for most of the lease term, often 75 to 80% of it. A five-year lease might let you fix for four years, a longer lease for five to seven. That is why a 25 basis point cash rate move can flow straight through to a residential borrower’s repayments, yet be almost irrelevant to a commercial investor sitting on a five-year fix. The lease is your known income, and the bank lets you lock the rate against it.

Now the inflation side. When your rent is indexed to CPI, higher inflation means a bigger rent escalation every year, and because rent is capitalised into value, higher rent at a stable cap rate means a higher property value. Many leases instead use a fixed 2, 2.5 or 3% escalation, and in a high-inflation environment a CPI-indexed lease outperforms those significantly. Knowing which one you are signing is why I always stress reading the detail, as I cover in how to read a commercial lease.

In the model I walk through, the scenario with higher inflation starts slightly behind because interest is marginally higher, but it finishes ahead, because the bigger CPI escalation compounds faster than the small rise in interest expense. The lesson holds across cycles: fix your debt to your lease term, make sure your rent is CPI-indexed, and watch cap rates, not just the cash rate, because a 1% cap rate shift on a $4M asset is a $600,000-plus swing in value. And remember, a vacant asset has no lease, no fixed rate and direct variable exposure, which is exactly why the lease is the asset, not the building.

Where to go from here

Most people start with Cal’s Fortify Your Wealth series, a multi-part video series on the strategies he uses when the market shifts, with weekly videos on YouTube.

If you would rather talk it through, book a quick 15-minute intro call with the Investor Code team: book an intro call.

And for the full framework, that is the Commercial Property Mastery online course.

Frequently asked questions

How do interest rates affect commercial property prices?

Higher interest rates raise the cost of debt, which can pressure pricing on geared assets. But if your debt is fixed to your lease term, a cash rate move has little effect on your repayments, so well-structured commercial property is far less rate-sensitive than residential.

Does inflation help or hurt commercial property?

Inflation generally helps when your rent is indexed to CPI. Higher inflation lifts your annual rent escalation, and because rent is capitalised into value, that higher rent means a higher property value at a stable cap rate.

Why is commercial property less rate-sensitive than residential?

Because commercial investors with a lease in place can typically fix their debt for most of the lease term, while residential borrowers are usually on variable rates tied to the cash rate. A 25 basis point move hits a residential repayment quickly but barely touches a commercial investor on a multi-year fix.

What is a CPI-indexed lease?

A CPI-indexed lease escalates the rent each year in line with the consumer price index rather than a fixed percentage. In a high-inflation environment it can outperform a fixed 2, 2.5 or 3% escalation, though tenants often push to switch to a fixed escalation to protect their costs.

Why do cap rates matter more than the cash rate?

Because cap rate movements are where the real price action is. A 1% shift in the cap rate on a $4M asset producing around $260,000 rent is a swing of more than $600,000 in value, which dwarfs the impact of a small change in the cash rate.