Why mortgage rates are rising – and what that means for your property sale

Anyone selling a property in 2026 is negotiating with buyers who are once again paying around four per cent for their financing: in June, the effective annual rate on new residential mortgage lending by German banks stood at 4.00 per cent, with the nominal rate at 3.95 per cent. At the end of 2021 the same average loan cost 1.32 per cent. For owners this is more than a footnote: prospective buyers’ budgets are shrinking, the pool of buyers able to obtain financing is thinning out — and the route to the right buyer determines the price and the speed of the sale more than ever.

This article explains the mechanics behind the movement in rates: what role the ECB’s policy rate actually plays, why the yield on ten-year German government bonds is the real benchmark for property financing, how inflation drives both figures — and what all of that means in practice for your sale.

Mortgage rates today: back at the four per cent mark

Whether you call them mortgage rates, property rates or home loan rates — they all mean the same thing: the interest rate on residential loans secured by a charge on the property. The Bundesbank data shows three phases. Until the end of 2021, zero interest rate policy kept residential lending historically cheap — at the low point, new business cost 1.16 per cent (December 2020). 2022 then brought the steepest rise in rates in decades, up to 4.22 per cent in November 2023. After that the picture eased temporarily: by early 2025 the rate was back at 3.52 per cent. Since then the trend has turned upwards again — June 2026 saw 3.95 per cent, and 3.98 per cent for fixed-rate periods of more than ten years.

What sounds like a rounding difference is substantial at typical loan sizes: for every 100,000 EUR borrowed, the gap between 1.32 and 3.95 per cent means a good 2,600 EUR of additional interest a year. On a 400,000 EUR loan with two per cent initial repayment, the monthly instalment rises from around 1,100 EUR to almost 2,000 EUR. It is precisely this affordability ceiling that sellers feel: smaller pools of interested parties, longer marketing periods and tougher price negotiations.

The policy rate: the pacesetter for short-term rates — not for property finance

The policy rate is the price at which banks obtain central bank money short term. After the inflation shock, the ECB raised the main refinancing rate from zero (until July 2022) to 4.50 per cent in September 2023, then cut it step by step from mid-2024 to 2.15 per cent — and reversed course in June 2026: since 17 June 2026 the rate has been back at 2.40 per cent, because price pressures have become entrenched again.

Directly, however, the policy rate steers only the short end of the yield curve — overnight money, current accounts, variable-rate loans. A property loan with a ten or fifteen year fixed-rate period is not refinanced by the bank through the ECB but through the capital market. That is why mortgage rates can rise while the policy rate falls: exactly that happened in 2025, when the ECB was cutting while long-end yields were already climbing again. So anyone tying their sale to the ECB calendar — “I’ll wait until rates come down again“ — is waiting for a signal that matters only indirectly for property finance.

German government bonds: the real benchmark for mortgage rates

When mortgage rates rise, German government bonds are almost always the reason. The yield on ten-year Bunds is the risk-free reference rate of the German market: Pfandbriefe, with which banks refinance their property loans, are priced at a spread over that yield, and the bank adds its margin on top. As a rule of thumb, the mortgage rate therefore sits roughly one to one and a half percentage points above the ten-year Bund yield.

The movement in this benchmark is remarkable: from minus 0.63 per cent in October 2020 through 2.53 per cent at the end of 2022 to 3.18 per cent in July 2026 — the highest level since the spring of 2011. Two forces lie behind it. On the supply side the federal government is issuing considerably more bonds: defence spending, the infrastructure special fund and structural deficits all increase the supply the market has to absorb. On the demand side the largest buyer of the 2010s, the ECB, has withdrawn; the central bank is running down its bond holdings rather than adding to them. More supply, less structural demand — that mix lifts yields and, with them, mortgage rates, regardless of individual policy rate decisions.

Inflation: the driver behind both rates

Whether policy rate or bond yield — inflation stands behind both. No investor willingly buys a security whose yield fails to offset the expected loss of purchasing power: every nominal rate contains an inflation compensation alongside the real rate. When inflation expectations rise, bond buyers demand more yield, and the central bank responds with higher policy rates.

After peaking at 8.8 per cent in the autumn of 2022, German inflation fell to 1.8 per cent by the end of 2025 — seemingly the all-clear. Yet since the start of 2026 it has been picking up again: in August 2026 consumer prices were 2.9 per cent above the previous year, and services prices — driven by wages — as much as 3.3 per cent. That persistence is why the ECB raised rates again in June 2026 and why bond markets are pricing in higher yields. For owners, incidentally, the same inflation has two faces: it makes buyers’ financing more expensive, but in nominal terms it supports rents and therefore the income power of let assets — the rent component of the price index most recently stood at 2.1 per cent. Well-prepared income-producing assets therefore remain sought after even in the current environment.

What this means for your sale

Rising mortgage rates do not act abstractly on “the market“; they bear very concretely on the question of who can still buy your property — and at what price.

Buyers’ budgets are shrinking — and with them the pool of buyers

A worked example shows how far the rise in rates shifts affordability: a flat, 30 per cent equity against total investment cost, an annuity loan with 3 per cent initial repayment. Alongside the current nominal rate, half and a quarter of that rate are calculated for comparison — the latter corresponds almost exactly to the level of the low-rate years up to 2021.

Transaction costs: real estate transfer tax 3.5% (Bavaria), notary and land registry around 1.5%, agent’s commission 3.57%. Monthly debt service = loan amount × (nominal rate + 3% initial repayment) / 12, rounded to whole EUR; the annuity remains constant over the fixed-rate period.

The sensitivity is linear, and that is what makes it so unforgiving: at 3 per cent repayment, every percentage point of interest raises the monthly instalment by around 83 EUR per 100,000 EUR of loan. For flat B that means: the same flat, which cost 1,263 EUR a month to carry in the low-rate phase, costs 2,201 EUR today — at an unchanged purchase price. Applying the usual rule of thumb of no more than 35 per cent of net household income for debt service, a buyer needed around 3,600 EUR net a month for this in 2021; today it is about 6,300 EUR. The number of households that clear that threshold has shrunk dramatically within a few years. Anyone selling today is selling into a smaller, more selective market — and should tailor the marketing accordingly.

Pricing: work with today’s market, not with 2021’s

Höhere Raten verkleinern das finanzierbare Budget der Käufer; Angebot und Nachfrage finden auf einem anderen Preisniveau zusammen als in der Niedrigzinsphase. Ein Angebotspreis, der noch auf Vergleichswerten aus den Boomjahren beruht, produziert heute vor allem eines: Liegezeit — und Objekte, die monatelang sichtbar unverkauft bleiben, werden vom Markt kritisch bewertet. Umgekehrt gilt: Bei vermieteten Objekten rechnen professionelle Käufer über die Rendite. Sie setzen die nachhaltige Miete ins Verhältnis zum Kaufpreis und vergleichen mit ihren Finanzierungskosten. Eine gepflegte Mieterstruktur, dokumentierte Erträge und realistische Ansätze sind im aktuellen Umfeld bares Geld wert.

Choosing the buyer: financing certainty is half the sale

The more expensive financing becomes, the more often purchases collapse at the bank at the last minute: mortgage lending values are set conservatively, equity requirements rise, financing commitments take longer. For sellers, the question “Who is buying?“ therefore becomes just as important as “At what price?“. Private buyers with substantial equity, family offices and institutional investors with a clear acquisition profile are the most reliable purchasers in today’s rate environment — they calculate with current terms instead of hoping for the rates they would like. These are exactly the buyer groups STRATON brings together: in the current acquisition profiles you can see, in anonymised form, which investors are actively searching right now — by region, asset class and volume.

In context: not an outlier but a normalisation

Uncomfortable as the rise feels for sellers, mortgage rates of around four per cent are historically not an extreme but a long-run average — the anomaly was the period from 2015 to 2021. As long as inflation and public debt keep Bund yields elevated, there is little to suggest a return to the old lows. Waiting for a turn in rates is therefore rarely a selling strategy; it is smarter to find the buyer who can purchase reliably in today’s environment. How that works discreetly and without public marketing is shown by Process.