Mortgage costs are rising again across the eurozone after the European Central Bank increased its three key interest rates by 25 basis points on 10 September 2026. The move lifted the deposit rate to 2.50%, the main refinancing rate to 2.65% and the marginal lending rate to 2.90%, effective from 16 September.

For borrowers, however, there is no single eurozone-wide outcome. Mortgage markets differ sharply between countries, and many banks had already anticipated the ECB decision before it was officially announced.

The effect therefore depends on whether a loan is fixed or variable, which benchmark it follows and how lenders fund themselves.

France Faces Gradual Increases

French borrowers are relatively protected from sudden payment shocks because fixed-rate mortgages dominate the market. According to the latest available Banque de France data cited by Euronews, fixed products account for 99.6% of new housing loans.

The average rate on a new 20-year fixed mortgage increased from 3.44% in August to around 3.54% in early September. Mortgage broker Pretto expects another rise of roughly 10 to 20 basis points if inflation remains persistent, potentially pushing the average towards 3.8%–4% by the end of 2026.

For a new €200,000 mortgage over 20 years, an increase from 3.54% to 3.9% would add approximately €37 to the monthly repayment and around €8,930 to the total interest bill.

Italian Variable Loans React Faster

Italy presents a different picture. Variable-rate mortgage holders are more directly exposed to ECB decisions because their borrowing costs can adjust more quickly.

MutuiOnline.it expects the average nominal rate on new 20- and 30-year variable mortgages to rise from about 2.80% to approximately 3.05%. A full 25-basis-point increase on a €200,000 mortgage with 20 years remaining would add about €25 a month, or just under €6,000 in extra interest over the remaining term.

Fixed mortgages remain far more popular, representing 92.2% of Italian applications in 2026. Their pricing follows long-term euro swap rates more closely than individual ECB decisions. Average fixed rates are expected to move from 3.46% in August towards about 3.75% by year-end.

On a new €200,000, 20-year mortgage, that difference would mean roughly €30 more each month and about €7,200 in additional interest.

Spain Feels Euribor Pressure

Spanish fixed mortgage rates remain comparatively low, but borrowers with Euribor-linked loans face a more noticeable increase.

Popular 30-year fixed mortgage offers have moved from roughly 2%–2.5% after the previous ECB increase in June to around 2.2%–2.8%. Initial rates on mixed mortgages have also risen from approximately 1.85% to 2%–2.1%.

For an existing €200,000 mortgage over 30 years, iAhorro calculated that the rise in Euribor from 2.172% in September 2025 to a provisional 3.101% in September 2026 could increase repayments by €98.92 per month, or €1,187.03 a year.

That figure reflects the full year-on-year rise in Euribor rather than only the ECB’s latest 25-basis-point decision. Borrowers whose loans are reviewed in September are likely to feel the increase first.

Germany Follows Bond Markets

German mortgage pricing is less directly tied to a single ECB announcement because long-term fixed rates tend to follow government bond yields and broader market funding costs.

Dr Klein reported that its best available 20-year mortgage rate had risen from 3.99% to 4.24% over the previous month. For a €200,000 loan, that increase would add about €42 to the monthly repayment.

Interhyp reported an average 20-year fixed rate of 4.46%, up from 4.32% in mid-August. Since late February, such rates have climbed by roughly half a percentage point, reflecting inflation concerns, higher energy costs and elevated long-term bond yields.

What Borrowers Should Watch

The ECB raised rates because inflation is expected to remain above its 2% target for longer than previously hoped. Its September projections put headline inflation at 3.0% in 2026, 2.5% in 2027 and 2.1% in 2028.

That does not mean every mortgage rate will rise by exactly 0.25 percentage points. Fixed loans respond to longer-term market expectations, while variable products can transmit ECB changes much faster.

For anyone arranging a new mortgage, small differences in rates now matter significantly over a 20- or 30-year term. Existing fixed-rate borrowers may notice little immediately, while variable-rate borrowers and people refinancing in the coming months are more exposed.

The latest increase therefore reinforces an important divide across Europe: the ECB sets one monetary policy, but national mortgage structures determine how strongly households feel it.