Currency and QE: Ramifications of Questioning the Euro

What is the future of the eurozone’s common currency? As remote as it is, redenomination risk is back: Political developments have some countries reassessing the euro. And while we don’t believe the euro is facing an existential threat, just the presence of redenomination risk is enough to complicate the European Central Bank’s (ECB) exit from its quantitative easing (QE) programme.

The risk that the euro might not remain the irreversible currency of the eurozone first appeared in 2010–2011, when Greece, and then Ireland, Portugal and Cyprus, lost access to the bond market and could no longer roll their debt. Contagion spread to Italy, Spain and other countries, with interest rates on all eurozone sovereign yield curves rising relative to German Bund yields.

By mid-2012 the eurozone was in crisis. Investors began to price the risk of the monetary union turning from a single currency area into a fixed nominal exchange rate system. They demanded increasingly higher interest rates on even short-term bonds to compensate for expected and imminent exchange rate risk, causing the slope of the term structure of sovereign bond spreads between peripheral countries and Germany to invert (see Figure 1). Only after ECB President Mario Draghi committed the central bank to “do whatever it takes” (July 2012) did the risk subside.

In 2015, redenomination risk resurfaced briefly in Greece when its government unilaterally contemplated leaving the euro rather than subjecting its citizens to the ongoing stringent conditions of international creditors. Greek bond yields briefly soared to 15% before the government decided to keep the euro over the uncertainties of reintroducing the drachma.

Today, we observe faint signs of redenomination risk as yield spreads between periphery country sovereign debt and Bunds widen, this time driven in part by opposition political parties advocating reintroducing national currencies as they campaign for upcoming general elections in France, Germany, Italy and the Netherlands. There are two important differences between current and earlier episodes of redenomination risk.

The first is that some political parties actively embrace the return to legacy currencies, and they are growing in size and number – even though, in our opinion, they may not fully appreciate the implications – whereas in earlier episodes, it was markets driving the potential for euro exit. The second is that market pricing suggests investors currently do not take the risk of a country leaving the euro anywhere near as seriously as what these political parties advocate, reflecting their lower chances of being elected. Despite the market-implied probability being low, the fact that redenomination has become a common theme across the eurozone cannot be ignored, in our opinion, with important consequences for both investors and policymakers alike.

Investors cannot ignore the potentially large exchange rate changes posed by a country leaving the euro, even if that probability is very low, creating a disincentive to commit to long-term, cross-border investments and hampering the formation of a capital markets union. For the ECB, higher risk premia associated with even latent redenomination risk tighten financial conditions and blunt the transmission of monetary policy around the single currency area. And politics – the source of redenomination risk – poses a dilemma for the ECB: How should it respond to tighter financial conditions caused by political parties wanting to take some countries out of the euro?