The world’s mortgage markets rarely move in unison, but moments of geopolitical stress expose just how differently they are wired. Since the escalation of conflict involving Iran, borrowing costs in the United Kingdom have climbed sharply, while Jamaica has remained comparatively steady. The divergence is not accidental. It reflects two systems responding to the same global shock with entirely different sensitivities.
In the UK, the transmission has been immediate. Mortgage pricing is closely tied to swap rates and government bond yields, both of which react quickly to inflation expectations. As oil prices rose on fears of supply disruption, markets began to price in more persistent inflation. Lenders followed. Data from Bank of England communications and market trackers show that average two-year fixed mortgage rates rose by roughly 70 to 100 basis points in a matter of weeks. Moneyfacts reported a jump from about 4.8 percent to near 5.8 percent on …
