Inflation jumps to 0.8 percent: What this means for your mortgage

Inflation in Switzerland rose to 0.8 percent in August 2026. In July, it was still at 0.4 percent. This is the highest level since August 2024. The Federal Statistical Office (FSO) announced this on Thursday. Economists had expected a maximum of 0.6 percent.

The national consumer price index (CPI) rose by 0.4 percent compared to the previous month to 101.5 points (December 2025 = 100). According to the FSO, this was mainly due to higher apartment rents as well as increased prices for petrol, diesel, and heating oil. In contrast, package holidays abroad as well as car rental and car sharing became cheaper.

Energy prices and weaker franc as drivers

The jump is mainly due to external causes. Since the collapse of the ceasefire between the USA and Iran, energy prices have risen again. This has affected heating oil and fuel prices in Switzerland. In addition, the low Rhine water level has made the transport of petroleum products more expensive. The weaker franc also plays a role: imported goods cost more.

What matters is the core rate. Core inflation, i.e. inflation without energy, fuels, and fresh and seasonal products, only rose slightly from 0.3 to 0.4 percent. There is no talk of a broad-based price increase. Inflation remains clearly within the Swiss National Bank's (SNB) target range, which considers price stability to be given at 0 to 2 percent.

Will the SNB stick to zero percent?

At its monetary policy assessment on 18 June 2026, the SNB kept the key interest rate at 0 percent for the fourth time in a row. The majority of economists do not expect a change in course even after today's figures: as long as domestically generated inflation remains low and no second-round effects on the core rate are visible, they see no need for action.

VP Bank sees things differently. The gross domestic product, adjusted for sporting events, grew by 1.5 percent in the second quarter, while inflation also rose – this combination increases the pressure on the National Bank, writes chief economist Thomas Gitzel in a spot analysis on Thursday. A slightly negative Saron no longer fits these data, and the SNB needs to adjust. An interest rate hike in December can no longer be ruled out. UBS, on the other hand, does not expect the first rate hike until June 2027.

What this means for mortgage holders

Nothing will change for Saron mortgages for the time being. The Saron follows the SNB key interest rate. As long as this remains at 0 percent, money market mortgages will stay inexpensive. However, those who have a Saron mortgage should keep an eye on the SNB's December decision: an interest rate hike would be reflected immediately in the interest burden.

With fixed-rate mortgages, the increase in inflation can become noticeable earlier. Their conditions depend on capital market interest rates, and these react to changing interest rate expectations before the SNB acts. If market expectations for future key interest rates rise, medium and long-term maturities generally become more expensive first. Anyone looking to conclude or extend a fixed-rate mortgage currently still has a historically favourable environment.

At least there is one constant for tenants: the mortgage reference interest rate has remained at 1.25 percent since the decision of the Federal Office for Housing on 1 September 2026.

The next monetary policy assessment by the SNB will take place at the end of September.

Sources

• Federal Statistical Office: National Consumer Price Index
• SNB: Monetary Policy Assessment of 18 June 2026
• VP Bank Spot Analysis of 3 September 2026: Swiss economy grows while inflation rises
• cash.ch: Swiss inflation makes a leap