Sweden’s economy is on fire — but here’s why that’s terrible news for the country’s central bank

REUTERS/Pawel KopczynskiMy Nordstroem of Sweden competes in the High Jump Women Qualification event at the European Athletics Indoor Championships in Gothenburg March 2, 2013.

Sweden’s economy is on a massive tear, but for the country’s central bank, that’s actually pretty awful news.

Sweden’s economy grew by 4.5% on an annual basis during the fourth quarter of 2015, according to figures published on Monday.

That’s far ahead of the expected 3.6%, and well above the 4.1% figure from Q3 last year.

On a quarterly basis, GDP grew 1.3%, nearly double the 0.7% expected by economists, and once again, well ahead of Q3’s number.

On the surface, a major, well-established Western economy growing by 4.5% in a year is absolutely fantastic, but for Sweden, and its central bank, the Riksbank, that’s not necessarily the case, and its all to do with inflation.

The stellar GDP numbers have sent Sweden’s krona soaring against the euro on Monday morning. The krona is up by nearly 0.5% against the euro so far today. Here’s how that looks:

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The bank is incredibly worried about the inflationary impacts of a strong kroner, saying in January that “the value of the Swedish krona in relation to the most important currencies is an important factor in assessing inflation. A rapid strengthening of the krona may therefore need to be counteracted by an even more expansionary monetary policy.”

Essentially, the bank doesn’t want the kroner to increase in value— at least until 2% inflation has been reached — and is prepared to intervene to stop it doing so. High inflation is a fair way away, given that right now it sits at just 0.8%.

The logic behind using a low valued krona to boost inflation is simple. Generally speaking, weak currencies lead to cheaper exports and more expensive imports. Cheaper exports increase competitiveness, therefore boosting demand and helping to stimulate inflation. Likewise, expensive imports generally help to push inflation upwards.

The Riksbank has, as asset management firm GAM puts it, an “obsession with inflation” with virtually everything the bank does geared towards bumping up inflation in the country.

In its quest to grow inflation, the Riksbank was one of the first central banks globally to push base interest rates into negative territory, something that until recently, looked to have totally failed to help inflation.

The country has been steadily cutting rates since going negative in February 2015, and currently stands at -0.5%.

But the latest numbers, released on February 18th, showed inflation at 0.8%. This marked a first increase in more than a year, and a substantial movement towards the Riksbank’s 2% target.

That jump was something of a boon for believers in negative interest rates, which have consistently been touted as having failed in their purpose so far. HSBC, JP Morgan, Goldman Sachs, and Bank of America Merrill Lynch have all pretty much said that negative rates have failed, and Business Insider’s Jim Edwards recently called the negative rate experiment a “devastating intellectual defeat for conservatives.”