The recent rise in mortgage rates across major economies illustrates how geopolitical tensions can quickly spill over into global housing markets. Mortgage borrowing costs have risen as markets increasingly price in inflationary risks associated with ongoing Middle East tensions. At the same time, elevated costs have intensified competition for deposits as consumers seek to lock in higher returns. Ultimately, the future of rates will depend on central banks’ ability to balance price stability with financial stability without materially weakening household finances or bank asset quality.
Although central banks in the US, the UK, and Europe have largely refrained from raising policy rates, the Reserve Bank of Australia announced its latest hike in May 2026. Meanwhile, mortgage rates have risen sharply across major economies: the US 30-year mortgage rate climbed to 6.36% in May 2026; Germany’s 10-year mortgage rates increased to 3.6% in January 2026; and the UK saw two-year fixed mortgage rates surging from 3.97% to 5.1% as of March 2026.
Higher mortgage costs are already reducing affordability for households. Rising monthly repayments weaken purchasing power, discourage refinancing activity, and place additional pressure on property markets, which are already facing supply shortages and subdued consumer confidence. Over time, elevated borrowing costs supress both housing market activity and residential construction.
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GlobalData Global Lending Analytics 2025
The impact is even more pronounced in countries where variable-rate mortgages dominate. According to GlobalData’s Global Lending Analytics 2025, 60% of Australian consumers hold variable-rate mortgages, compared with 7% in the US. This leaves households in Australia significantly more exposed to increases in borrowing costs, making consumer spending and household finances more vulnerable during prolonged periods of restrictive monetary policy. It may also discourage additional investment into the housing market as affordability pressures intensify.
From a retail banking perspective, rising interest rates can initially improve profitability through higher net interest margins, as banks are generally able to reprice loans faster than deposits. Given banks’ exposure to variable-rate residential mortgages, even modest increases in interest rates yield meaningful incremental interest income.
However, these gains may be temporary if elevated borrowing costs begin to materially affect asset quality. Sustained rate increases can heighten mortgage stress and default risk, particularly among subprime and highly leveraged borrowers who accumulated debt during the low-interest rate environment. Banks must closely monitor non-performing assets and expand customer support mechanisms to help borrowers manage rising repayment burdens.
Simultaneously, banks are facing increasing pressure on the deposit side of the balance sheet. For example, the Bank of India has raised deposit interest rates to attract and retain savers seeking stronger returns in an inflationary environment, reflecting growing competition for deposits.
While this may support liquidity and deposit growth, higher funding costs could gradually compress banks’ margins over time—particularly if competitive pressures intensify across the sector.
Ultimately, the current environment highlights the growing interconnectedness between geopolitics, inflation expectations, monetary policy, and household financial stability. The duration and intensity of these pressures will depend on how long geopolitical tensions persist, how inflation evolves across major economies, and the extent to which central banks can balance inflation control with financial stability concerns without materially weakening household balance sheets and bank loan portfolios.
Bhavya Patel is an Associate Analyst, Banking & Payments, GlobalData
