Iceland’s Inflation Battle: Ending Indexation and Restoring Stability

This is the sixth piece in a series on Iceland’s economy. An earlier piece, “The Painkiller That Became the Disease,” argued that verðtrygging persists because it works too well for whoever holds the debt, anaesthetising the country to its own inflation. This one is the constructive sequel: a concrete, phased plan to end it — grounded in a worked example of what abolition does to an actual mortgage, an honest weighing of the costs, and the argument that ending indexation and defeating inflation are not two projects but one.

Iceland is once again fighting inflation the way it always does, and once again it is not working. The Central Bank holds its policy rate at 7.75%. The Finance Minister, Daði Már Kristófersson — himself an economist — defends the government’s role as supporting the Bank through a balanced budget, and in May conceded, plainly and to his credit, that the plan “is not working as intended.” I want to take that admission seriously, because he is right, and the reason he is right is the subject of this piece. The government’s approach is not failing because the people running it are careless. It is failing because the tool cannot work in an economy built the way Iceland’s is. You cannot win the inflation war while verðtrygging stands, and you cannot end verðtrygging without winning the inflation war. They are the same fight. This is how you win it.

Why the interest-rate weapon misfires in Iceland

In a normal economy, when the central bank raises rates, mortgage payments rise, households feel it immediately, spending cools, and inflation falls. The pain is the mechanism. It is supposed to hurt, because the hurt is what changes behaviour.

In Iceland the mechanism is broken at the point where it should bite. Faced with a rate rise, an Icelandic household does not simply absorb a higher payment — it refinances from a non-indexed loan into an indexed one, which lowers the monthly payment by pushing the inflation onto the loan’s principal instead. This is not a hypothetical; it is what the data show happening every time rates climb, and it is entirely rational for each household. But its collective effect is to disconnect the Central Bank’s lever from the household it is meant to reach. The rate goes up; the payment does not; the demand does not cool; the inflation does not fall. The Bank then has to push rates higher and hold them longer to get any traction — which is exactly the punishing 7.75%-against-persistent-inflation situation Iceland is now in.

And the indexation does not stop at mortgages. Roughly seven in ten rental contracts are CPI-linked. The wage agreements themselves contain inflation triggers — the September 2026 review is set to test whether twelve-month inflation has breached 4.7%. Iceland has wired inflation pass-through into its mortgages, its rents, and its wages simultaneously. When you have built a machine that automatically converts any price rise into higher debts, higher rents, and higher wages — which become the next round’s higher prices — you have not built protection against inflation. You have built a flywheel that keeps it spinning. The interest-rate weapon misfires because it is aimed at a household the indexation has already insulated.

This is why the Finance Minister’s framework, however competently executed, cannot deliver. It is the right medicine for the wrong disease. Fiscal restraint and high policy rates fight demand inflation in an economy where the transmission works. Iceland’s persistent inflation is substantially structural — manufactured by the indexation flywheel and, until June 2024, by a housing-CPI measurement quirk that added nearly two points a year to the headline for two decades. You do not turn off a flywheel by taxing the room it spins in.

What actually happens to a mortgage: a worked example

Abstract arguments about indexation do not land until you see what it does to a real loan. So consider a representative Reykjavík mortgage: 50 million krónur, 40-year term. Assume the conditions Iceland actually lives in — an indexed loan at 3.5% real interest with 5% inflation, versus a non-indexed loan at 9.5% nominal. Here is what each does. (The full month-by-month model is reproducible; the figures below come from it.)

The indexed loan looks kind and is not. Its first monthly payment is about 194,000 krónur — cheap, affordable, welcoming. This is the seduction. But because inflation is added to the principal faster than early payments reduce it, the loan grows. After five years, our borrower has paid every instalment on time and now owes about 59.8 million krónur — nearly 10 million more than they borrowed. The balance does not peak until roughly year sixteen, at close to 92 million. Over the full 40 years, the borrower pays about 288 million krónur to clear a 50 million loan — 5.8 times the sum borrowed. The low first payment was the bait; the growing balance is the hook.

The non-indexed loan looks brutal and is honest. Its first payment is about 405,000 krónur — more than double the indexed loan’s, and this gap is exactly why households flee to indexed loans under rate pressure. But the balance never rises. It falls from day one. Over 40 years the borrower pays about 194 million krónur — 3.9 times the principal, against the indexed loan’s 5.8 times. The non-indexed borrower pays far more each month and vastly less in total, and always knows what they owe.

The indexed loan, in other words, is a device for making an unaffordable nominal interest rate feel affordable by hiding it in the principal and stretching the pain across decades. It does not lower the cost of borrowing. It disguises it — and the disguise is precisely what removes the household’s incentive to demand lower inflation, because the household no longer feels the inflation in its monthly payment. The worked example is the whole national problem in miniature.

Why you cannot simply abolish it: the conversion shock

Here is where good intentions meet arithmetic, and where a plan has to be honest or it is worthless. Suppose Iceland abolished indexation tomorrow and converted existing indexed loans to non-indexed at current rates. Take our borrower five years in, owing 59.8 million. Convert that balance to a non-indexed loan at today’s ~9.5% over the remaining 35 years, and the monthly payment jumps from about 247,000 krónur to about 491,000 — it doubles. Even at 7.5% the payment rises 63%. No electorate absorbs a doubling of its mortgage payment, and no government survives imposing one. This is why every past attempt to abolish verðtrygging has died: abolition at current interest rates is a payment shock no one can carry.

But run the same conversion after the inflation fight is won. If inflation falls toward the 2.5% target and non-indexed rates settle near 5.5–6%, that same converted balance costs about 321,000 krónur a month — a jump of roughly 74,000, not 244,000. Uncomfortable, absorbable, survivable. The identical structural reform is politically impossible at 9.5% and politically feasible at 5.5%.

That single contrast is the design principle of the entire plan. You cannot convert the country off indexation until inflation is low, and inflation will not durably fall until you stop feeding the indexation flywheel. The circularity is real, and breaking it is the whole task. You break it not by doing both at once, but by sequencing them so that each enables the next.

The lesson of 2008 — and why it is not the template people think

Everyone reaching for a plan to end indexation reaches first for 2008, when mortgages were revalued and re-papered en masse. It is worth being precise about what actually happened then, because the memory is misleading.

Two different things occurred. The first was the “110% adjustment” — mortgages written down to 110% of property value, about 43.6 billion krónur of relief. This was a discretionary political write-down, and it was affordable for one reason that no longer exists: the old banks had collapsed into receivership, and their foreign creditors were absorbing the losses through the bail-in. The write-down was paid, in effect, out of the estates of failed banks. There is no failed-bank estate today. That funding source is gone.

The second was the recalculation of foreign-currency loans — about 108 billion krónur — and this is the mechanism most people are actually remembering. But it was not relief. It was the Supreme Court ruling, in 2010, that loans disbursed and repaid in krónur but pegged to a foreign currency were illegal, because no foreign currency ever changed hands — the currency was merely an index, and Icelandic law did not permit it. Those borrowers won because their contracts were void.

And here is the fact that matters most for any abolition plan: CPI-indexation is legal. Verðtrygging is explicitly authorised by the Act on Interest and Price Indexation (No. 38/2001). The foreign-currency loans were struck down precisely because they were not the sanctioned domestic index. So neither 2008 mechanism transfers. You cannot invoke illegality, because there is none. You cannot draw on a creditor estate, because there is none. Anyone promising a quick, costless, 2008-style abolition is selling a memory that does not apply.

What 2008 does prove is narrower but genuinely useful: the operational machinery exists. The banks demonstrated they could revalue entire mortgage books, recalculate every contract, and re-paper agreements across the whole system in a compressed period. The administrative capacity to convert a national loan book is not in question. What differs is who pays, on what legal basis, and — crucially — over what timeframe. 2008 was a shock done at once because a collapse forced it. Ending indexation must be the opposite: a deliberate, phased conversion done slowly, on purpose, precisely so that no household faces the shock our worked example warns about.

The plan: fast on the flow, patient on the stock

The reform splits cleanly into two problems that must be handled at completely different speeds. The flow is new indexed lending. The stock is the trillions in existing indexed debt. Confusing them is why the debate stalls; separating them is what makes a plan possible.

Phase one, years zero to two — turn off the tap. Prohibit the issuance of new indexed mortgages, and require every lender to offer a non-indexed alternative. This touches no existing contract, so it imposes no payment shock and creates no conversion cost. It is the single highest-leverage, lowest-disruption move available, and it can be legislated quickly because it changes only what may be sold tomorrow, not what was signed yesterday. Its effect is quiet but profound: from the day it takes effect, the indexed share of the national mortgage stock can only shrink. Every month, monetary policy transmission is fractionally restored, because a growing share of borrowers now feel rate changes in their payments the way the Central Bank intends. Pair this with completing the CPI-methodology cleanup begun in June 2024, and the flywheel begins, slowly, to lose speed.

Phase two, years one to four — make the fight real and win it. Turning off the flow is what makes the inflation fight winnable, because a shrinking indexed share means the Central Bank’s rate lever bites harder each year. Now the government does its part in earnest — not the ritual of “supporting the Bank with a balanced budget,” but the structural reforms this series has argued for: opening the three-bank market to competition so lending spreads narrow, deepening the FX-hedging market so pension capital can work abroad without whipsawing the króna, and beginning the honest public review of the 3.5% pension reference rate. As the flywheel slows and these reforms bite, inflation can durably fall toward target — and non-indexed nominal rates fall with it. This phase is not a detour from ending indexation. It is the precondition for finishing it.

Phase three, years three to fifteen — convert the stock on incentives, never by force. Only once nominal rates have fallen does mass conversion of the existing stock become humane. And it should be voluntary, driven by incentives rather than mandate: as our model shows, once non-indexed rates sit near 5.5–6%, the payment jump on conversion becomes absorbable, and many borrowers will convert on their own to escape a growing balance — just as they refinanced into indexed loans when the incentives ran the other way. The state can accelerate this with targeted, time-limited support for the conversion friction — a far smaller and better-targeted cost than a blanket write-down — and let the remaining indexed stock amortise naturally. Critically, this pace respects the fact that the pension funds hold the other side of these loans: a gradual runoff lets the funds’ indexed assets mature rather than being revalued in a single shock, protecting the very retirement savings a reckless abolition would damage.

The whole sequence is one motion. Stop the flow, which restores the Bank’s power, which wins the inflation fight, which lowers nominal rates, which finally makes the stock safe to convert. Fifteen years sounds long. It is roughly the remaining life of the loans being written today, and it is the price of doing this without breaking anyone. A five-year forced march on the stock would recreate the conversion shock and fail like every attempt before it. Patience on the stock is not weakness; it is the design.

The pros and cons, weighed honestly

What Iceland gains. A central bank whose interest-rate decisions actually work, so that inflation can be fought with a functioning tool rather than an ever-higher rate. A mortgage market where borrowers know what they owe and the balance falls from the first payment. The removal of the hidden, regressive transfer that indexation runs from the young and the first-time buyer — who carry the growing balances — toward the holders of indexed capital. A restored feedback loop in which inflation once again hurts in real time, which is precisely what generates the political will to keep it low. And, over time, a lower cost of capital, because the inflation risk premium baked into every Icelandic rate falls as inflation becomes credibly anchored. These are not separate prizes. They are the same reform seen from different angles.

What it costs, and who bears it. The transition is not free and the essay that pretends otherwise is not worth reading. During phase one, borrowers who can no longer choose an indexed loan face higher monthly payments on new mortgages than the indexed option would have shown — the honest payment, but a higher one — which will slow the housing market at the margin until nominal rates fall. The pension funds lose a perfect instrument: indexed assets that guaranteed a real return regardless of the monetary environment, and their managers will resist the change precisely because it works so well for them; the phased runoff mitigates but does not eliminate this. The state will carry a real, if bounded, cost in supporting phase-three conversion friction. And there is genuine execution risk: if the government turns off the flow in phase one but then fails to win the inflation fight in phase two, borrowers are left on non-indexed loans at high nominal rates with no relief — the worst outcome, and the reason the sequence cannot be half-completed. This is a reform that punishes a government which starts it and loses its nerve.

The honest balance. The costs are real, concentrated, and mostly transitional. The benefits are large, diffuse, and permanent. That distribution — concentrated costs, diffuse benefits — is exactly why the reform has never happened, because concentrated interests organise and diffuse ones do not. But it is also why the reform is right: a country should not keep a machine that quietly taxes its young to protect the returns of its largest financial pool, simply because the losers from reform are better organised than the winners.

The one fight

The Finance Minister is not wrong that inflation is the problem, and he is not wrong to want the Central Bank to succeed. He is fighting the right war with a weapon that Iceland’s own architecture has disarmed. The interest-rate lever cannot win while the indexation flywheel converts every rate rise into a refinancing that defeats it. And the flywheel cannot be dismantled while rates are high, because conversion at high rates doubles people’s payments. The two problems are one problem, and the solution is one sequence: turn off the flow first, which slowly re-arms the Bank, which wins the inflation fight, which lowers rates, which finally lets the country convert off the stock without breaking a single household.

This is hard, it is slow, and it is entirely within Iceland’s own power — no treaty, no euro, no permission from anyone. It is Act 38/2001, the three banks, the pension reference rate, and the patience to do things in the right order. Iceland changed the CPI methodology by itself in June 2024 and proved it reforms its own machinery when it decides the machinery is wrong. This is the same decision, one order of magnitude larger. The painkiller can be set down. But only by someone with the steadiness to do it slowly, and the honesty to tell people it will hurt a little now so that it stops hurting for good.

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Sources and notes

• The worked mortgage model. Figures are from a reproducible month-by-month annuity model comparing a CPI-indexed loan (3.5% real interest, 5% annual inflation) with a non-indexed loan (9.5% nominal), on a 50m ISK / 40-year mortgage, plus a conversion scenario at year five. Assumptions are chosen to reflect recent Icelandic conditions (indexed real rates around 3.5%; non-indexed variable rates averaging ~9.5–10.6% in 2023–24 per the European Mortgage Federation Hypostat 2025; inflation in the 5–6% band). These are illustrative of the mechanism, not a forecast; actual loan terms, amortisation types (annuity vs equal-principal), and rate paths vary, and the figures should be recomputed against a specific lender’s terms before being used for any individual decision.
• Inflation and policy rate. Central Bank policy rate raised to 7.75% in May 2026; Finance Minister Daði Már Kristófersson’s remarks that the plan “is not working as intended” (mbl.is/Iceland Monitor, 22 May 2026) and that the ministry’s role is to support the Central Bank via a balanced budget (Iceland Monitor, Sept 2025). The September 2026 wage-agreement review and the 4.7% twelve-month inflation trigger are from Iceland Monitor (30 April 2026).
• The 2008 mechanisms. The 110% mortgage adjustment (~43.6bn ISK) and the recalculation of illegal FX-indexed loans (~108bn ISK) are documented in Méndez-Pinedo, “Iceland’s New Plan for Debt Relief” (European Journal of Risk Regulation, 2014) and contemporaneous reporting; the Supreme Court’s 2010 ruling that krónur-disbursed, FX-pegged loans were illegal, and the subsequent ruling that Icelandic interest rates should apply, are from Icelandic and Reuters reporting (June–Sept 2010). The bail-in of foreign bank creditors and the capital-controls context are from the standard accounts of the 2008–2011 crisis.
• Mortgage market structure. Indexed loans remain a major share of the market, with borrowers refinancing into indexed loans under rate pressure (Iceland Review / mbl.is, 2023); household debt ~70.7% of GDP (Sep 2025, CEIC/Central Bank); owner-occupancy ~75% (2021 census, via EMF Hypostat 2025); CPI-indexed loans ~52% of household mortgages per S&P (2024).
• Legal basis. Verðtrygging is authorised under the Act on Interest and Price Indexation No. 38/2001; the reform described requires amending domestic legislation only.
• Caveats. The phasing timeline (fast flow / patient stock) and the sequencing argument are the author’s proposal, not established policy. The claim that turning off the flow progressively restores monetary transmission is directionally sound but not quantified here; the pace at which the indexed share of the stock would decline, and the corresponding gain in policy traction, would need modelling against Central Bank loan-stock data before this became a formal proposal. Execution risk — a government that completes phase one but not phase two — is real and is stated in the text.