The European Central Bank (ECB) increased its key interest rate by 25 basis points to 2.25% on September 11, 2025, marking its first rate hike since 2023. This decision was made as the ongoing Iran war continues to drive inflation above the ECB's target, primarily through higher energy costs resulting from the conflict. The ECB's Governing Council stated that the war in the Middle East is generating inflationary pressures and that the rate hike is justified across various scenarios considering the evolving shock and its potential effects on the euro area's medium-term outlook [1].
Markets had anticipated this move, with LSEG data indicating a near-100% probability of a 25 basis point increase ahead of the June Governing Council meeting [1]. The ECB also revised its inflation forecasts upward, now expecting headline inflation in the euro zone to average 3% in 2026, 2.3% in 2027, and 2% in 2028. These adjustments reflect expectations of persistently higher energy prices feeding into the costs of food, goods, and services [1].
Conversely, the ECB downgraded its economic growth forecasts, projecting euro zone growth at 0.8% in 2026, 1.2% in 2027, and 1.5% in 2028. The downward revision is attributed to the war's pronounced impact on commodity markets, real incomes, and consumer confidence. Euro zone inflation rose to 3.2% in May, according to flash data, while the region's economy grew by only 0.1% in the first quarter of the year [1].
ECB President Christine Lagarde emphasized the uncertainty of the outlook, citing upside risks for inflation and downside risks for economic growth. She reiterated that the ECB is not pre-committing to a specific rate path, and the full implications of the war will depend on the intensity and duration of the energy price shock, as well as its indirect effects. The ECB stated it remains well positioned to navigate the uncertainty and will closely monitor the situation [1].
CONCLUSION
The ECB's rate hike to 2.25% underscores the significant inflationary pressures stemming from the Iran war and associated energy price shocks. While the central bank aims to curb inflation, it acknowledges heightened uncertainty and risks to economic growth, signaling a cautious and flexible approach to future policy decisions.