The ECB is virtually certain to hike rates Thursday. Here is why Wall Street is bracing for what comes next.

The European Central Bank’s decision on Thursday is largely a foregone conclusion: nearly all observers expect another hike in its deposit rate. The real debate, however, centers not on today’s move but on the terminal rate—the peak level of this tightening cycle. Bond markets are showing visible dissent on this point, reflecting deep uncertainty about how much further the ECB can push policy without breaking something in the real economy.

The central variable is energy. The recent flare-up in Middle East tensions has reintroduced a geopolitical risk premium into oil and gas prices. If these pressures persist, they could stall the disinflation process that has allowed the ECB to slow its pace. A renewed energy shock would force the central bank to either extend its hiking campaign or hold rates at restrictive levels for longer, even as growth momentum fades across the eurozone.

For investors, the key signal to watch is not the headline rate but the forward guidance and any revisions to inflation forecasts. The ECB’s language will likely acknowledge the geopolitical fog without committing to a fixed path. Markets will parse every word for clues on whether officials see themselves as data-dependent or crisis-sensitive. The ultimate destination of rates remains an open question, hinging on events far beyond Frankfurt’s control.