Chapter 07 of 13

The weird clue

Look at the CPI decomposition again:

• Imported goods: −1.2%

• Services: +8.4%

• Housing: +7.0%

Imports are deflating. Everything non-tradable is hot. The hottest thing in the basket is not a traded good, not a commodity, not anything you ship on a container: it is rent. Paid rent is up 8.3% YoY, imputed rent 6.8%. And rent has accelerated while house prices have cooled — Iceland's house price index is up only about 2.4% YoY, and has actually been falling in real terms since early 2025.

This is unusual. In most inflation episodes house prices lead and rents follow. In Iceland, the two have decoupled.

Prices are cooling (the CBI's rate hikes worked on that margin). Rents are not cooling. Why?

Because prices and rents are bid by different people using different money. House prices are bid by people with credit — the marginal buyer is borrowing, and their bid is sensitive to the nominal interest rate. Rents are bid by people who need a place to live and do not have a mortgage alternative. Their bid is sensitive to how much cash they can commit and how many of them there are.

When population grows as rapidly as Iceland's has — 75,000 new residents in fifteen years, overwhelmingly concentrated in the capital area's rental market — you get more people bidding against each other for a stock of rental units that hasn't grown proportionally.

This is the clue we have been building toward. The inflation is concentrated in the one part of the basket that is bid by bodies competing for roofs, and that part of the basket has decoupled from prices, which are bid by credit-financed buyers. The rate tool bites the credit side of the market. It doesn't bite the rental side. And the rental side is the one carrying the real scarcity signal: when property prices rise on cheaper credit, that looks like scarcity but isn't; when rents rise against a market where prices are cooling, that is scarcity.

Now let's line up the rest of the evidence.