ECB cuts rates to 2.5% as German fiscal shift drives bond yields to 2023 highs

The European Central Bank delivered its expected quarter-point rate cut on Thursday, lowering the deposit facility to 2.5% from 2.75%, but the real story unfolded in the bond market where Germany's sudden fiscal pivot overwhelmed the monetary easing. German 10-year Bund yields surged to 2.929% at one point, the highest level since October 2023, marking the largest single-day jump since May 1997 as investors priced in a structural increase in German borrowing.

ECB stays the course on easing

The Governing Council's decision was unanimous and widely anticipated. With headline inflation at 2.4% in February and core inflation at 2.6%, the ECB judged that the disinflation process is sufficiently advanced to continue reducing restriction. The bank's statement noted that past rate cuts are "making new borrowing less expensive for firms and households" and that financing conditions are easing. But the accompanying staff projections told a more sober story: 2025 growth is now seen at just 0.9%, barely above the 0.7% recorded in 2024, while 2026 and 2027 forecasts were also trimmed to 1.2% and 1.3% respectively.

The growth downgrade reflects both domestic weakness and external risk. The ECB explicitly flagged the threat of US "reciprocal tariffs" under the Trump administration, which could target any country that taxes American imports, a description that fits the EU's own tariff schedule. If implemented, such measures would hit eurozone exports directly and could force a further reassessment of the growth outlook later this year.

Germany's debt brake moment

While the ECB was cutting rates, Berlin was rewriting the fiscal rules that have constrained German borrowing since 2009. The CDU/CSU and SPD, currently in coalition talks, have agreed in principle to exempt defence spending above 1% of GDP from the debt brake and to create a €500 billion off-budget fund for infrastructure and climate investment over ten years. The package would represent a fiscal expansion of roughly 1.5% of GDP annually, unprecedented in post-reunification Germany.

The market reaction was immediate and violent. Bund yields, which had been trading around 2.5% in late February, leapt by more than 30 basis points in a single session on Wednesday. The move extended into Thursday, pushing the 10-year yield briefly above 2.93%. For context, the last time German yields moved this much in a day was during the Asian financial crisis. The sell-off reflects a fundamental repricing: investors are no longer pricing a Germany that runs structural surpluses, but one that will issue hundreds of billions in new debt.

Spillover to UK and European peers

The Bund sell-off dragged up yields across the eurozone and into the UK. UK 10-year gilt yields climbed above 4.5%, their highest level since the autumn, compounding pressure from domestic inflation data that has come in stickier than the Bank of England expected. Services inflation remains above 5%, and wage growth is still running at 5.9% year-on-year in the three months to January.

Yet Lindsay James, investment strategist at Quilters, argued the market is not panicking. "The market was still expecting the Bank of England to make two further rate cuts in 2025, with recent inflation data reasonably encouraging," she said. Swaps markets price roughly 50 basis points of BoE easing by year-end, compared with around 75 basis points for the ECB. The divergence reflects the UK's more persistent services inflation but also the fact that the UK lacks a fiscal shock of German magnitude.

The inflation picture: closer to target but not there

The ECB's confidence to cut rests on the trajectory of inflation. Headline HICP fell to 2.4% in February from 2.5% in January, while core inflation dipped to 2.6% from 2.7%. Energy prices subtracted 0.3 percentage points from the headline rate. But services inflation, the component most closely watched by policymakers as a gauge of domestic price pressures, remained elevated at 3.7%. The ECB's new projections see headline inflation averaging 2.3% in 2025, 1.9% in 2026 and 2.0% in 2027, implying a return to target only in the final year of the projection horizon.

Wage growth is the swing factor. Negotiated wage growth slowed to 3.8% in the fourth quarter of 2024 from 5.4% in the third quarter, but the ECB expects unit labour cost growth to remain above its historical average through 2025. Productivity growth has been near zero for two years, meaning any wage increase feeds directly into unit costs. The bank's models assume productivity will recover, but the evidence so far is thin.

External risks: tariffs and the dollar

The Trump administration's threat of "reciprocal tariffs" adds a layer of uncertainty the ECB cannot control. The mechanism is simple: the US would match the tariff rate any country applies to American goods. Since the EU applies tariffs on a range of US imports, from automobiles at 10% to agricultural products at much higher rates, the exposure is broad. The ECB's baseline assumes no major escalation, but the risk is asymmetric: tariffs would raise import prices (pushing up inflation) while simultaneously reducing export demand (pushing down growth). That stagflationary combination would paralyse monetary policy.

A stronger dollar, likely if US tariffs provoke retaliation and risk-off flows, would further complicate the picture by raising eurozone import costs. The euro has already fallen from $1.12 in September to around $1.08, adding roughly 0.2 percentage points to imported inflation. The ECB's projections assume a trade-weighted exchange rate roughly stable at current levels.

Monetary policy at a crossroads

The juxtaposition of ECB easing and German fiscal expansion creates a novel policy mix for the eurozone. For years, the complaint was that monetary policy carried the entire burden of demand support while fiscal policy was contractionary. Now fiscal policy is turning expansionary just as monetary policy becomes less restrictive. In normal times, that combination would be stimulative. But the bond market is signalling concern that the fiscal expansion is poorly targeted, heavy on consumption and defence procurement, light on productivity-enhancing investment, and that the debt trajectory is unsustainable without higher growth.

The ECB's own models suggest a 1% of GDP fiscal expansion raises output by 0.5-0.7% after two years, but also raises inflation by 0.2-0.3 percentage points. If Germany's package delivers 1.5% of GDP annually, the growth benefit could be 0.75-1% over the medium term, enough to lift the eurozone out of stagnation. But the inflation cost could force the ECB to stop cutting sooner than markets expect, or even hike again if the supply side does not respond.

What the yield curve is saying

The steepening of the German yield curve, two-year yields up only modestly while 10-year and 30-year yields surged, tells its own story. Short rates are anchored by ECB policy expectations. Long rates are pricing term premium: the compensation investors demand for holding duration risk when fiscal trajectories are uncertain. The 10-year/2-year spread widened to its steepest level since 2022. This is not a classic inflation scare, breakeven inflation rates barely moved, but a supply-and-demand shock in the bond market itself.

The Bundesbank, which holds over €1.3 trillion of German government bonds under the ECB's asset purchase programmes, faces mark-to-market losses on its portfolio as yields rise. More importantly, the transmission of ECB policy to the real economy depends on bank lending rates, which are priced off swap curves that move with Bunds. If long-term rates stay elevated, the pass-through of the ECB's rate cuts to mortgages and corporate loans will be dampened.