Verðbólgan

Iceland's headline CPI has been stuck above target for almost four years. Everyone has a theory. The central bank says expectations have deanchored. The opposition says the government spent too much. The populists say the immigrants drove up costs. The landlords say the unions are too demanding. The unions say the rents are too high. Each diagnosis arrives with its preferred treatment already in hand, and each conveniently points the finger away from the diagnostician's own constituency. Inflation is always and everywhere a political phenomenon — not because politics causes it, but because every diagnosis is shaped by the politics of the diagnostician.

Peer countries have moved on. Germany, the United Kingdom, the United States all have trend inflation back within shouting distance of 2%. Iceland is still printing 5.4% headline, with services at 8.4% and housing above 7%. The Seðlabanki hiked its policy rate from 0.75% to a peak of 9.25%, cut tentatively to 7.25%, then reversed course and hiked again to 7.50% in March 2026 — all while producing a working paper arguing that the problem is fundamentally about "weakly anchored inflation expectations."

That is the official diagnosis. It is wrong.

What follows is a detective story. Economic analysis does not usually benefit from whodunit framing — there are too many suspects and too few clean data points — but Iceland's case is unusually cooperative. The suspects line up, the alibis can be checked against the CPI basket, the CBI's own credit-flow data, and the HMS property registry, and the culprit turns out to be hiding in plain sight. The forensic work has already been done. What follows is the walkthrough.