Frankfurt, Germany – Global financial services firm Nomura’s Euro area team anticipates the European Central Bank (ECB) will implement a 25-basis-point (bp) increase to its main refinancing operations rate, bringing it to 2.50%, at its upcoming monetary policy meeting scheduled for September 10. This projection is underpinned by persistently elevated Harmonised Index of Consumer Prices (HICP) inflation and a surprisingly resilient economic performance across the Eurozone. Analysts at Nomura further highlight a discernible shift towards a more hawkish stance among key ECB officials, indicating a strong commitment to combating inflation, even as global energy price dynamics – particularly Brent crude oil and Dutch TTF natural gas – introduce significant additional tightening risks extending into late 2026.

The Immediate Outlook: September’s Expected Move

Nomura’s assessment points to a confluence of factors compelling the ECB to act decisively in September. The primary driver remains the elevated HICP inflation rate, which has far outstripped the central bank’s medium-term target of 2%. While recent months may have shown some moderation from peak levels, underlying inflationary pressures continue to build, partly exacerbated by geopolitical events. The report specifically cites the impact of the Iran war, suggesting its influence on global energy markets is contributing to the upward trajectory of consumer prices.

Coupled with this inflationary environment, the Euro area economy has demonstrated unexpected resilience. Despite headwinds from high energy costs, supply chain disruptions, and tighter financial conditions, economic activity has not faltered as severely as some had predicted. This resilience provides the ECB with greater room to manoeuvre, allowing it to prioritise inflation control without immediately risking a sharp economic contraction.

"We expect the ECB to raise rates at its 10 September meeting by 25bp to 2.50% in light of rising HICP inflation, due to the Iran war, and the Euro area’s economic resilience. There are clear risks of further rate hikes beyond September, however," the Nomura report stated, underscoring both the near-term certainty and the longer-term uncertainty surrounding the policy path.

A Hawkish Undercurrent: Shifting Rhetoric from Frankfurt

Adding weight to Nomura’s forecast is the increasingly hawkish commentary emanating from various members of the ECB’s Governing Council. These statements reflect a growing consensus within the central bank that inflation risks remain tilted to the upside and that policy rates may need to move into genuinely restrictive territory to bring price growth back to target.

A notable example cited in the report comes from an ECB official, Radev, who suggested recently that the "neutral rate is probably around 2.50%." The neutral rate, in economic terms, is the theoretical interest rate that neither stimulates nor constrains economic growth. Radev’s comments imply that reaching 2.50% would merely bring policy to a neutral stance, and that "the ECB may eventually be required to raise rates into restrictive territory." A restrictive policy stance is one where interest rates are set above the neutral rate, actively dampening economic activity to curb inflation. This signals a willingness among policymakers to go beyond merely removing accommodation, and to actively apply brakes to the economy if necessary.

Such pronouncements are crucial as they shape market expectations and provide forward guidance on the ECB’s commitment to its primary mandate of price stability. They indicate a proactive rather than reactive approach, aiming to anchor inflation expectations firmly at the 2% target.

Chronology of ECB’s Monetary Tightening

The anticipated September hike would mark another significant step in the ECB’s journey from an era of historically low, and at times negative, interest rates to a period of aggressive monetary tightening. For years following the global financial crisis and the Eurozone sovereign debt crisis, the ECB maintained an accommodative stance, employing negative deposit facility rates and large-scale asset purchase programmes to stimulate economic growth and combat deflationary pressures.

However, as the global economy rebounded from the COVID-19 pandemic and supply chain disruptions began to manifest in rising prices, the inflation landscape shifted dramatically. By late 2021 and early 2022, HICP inflation in the Euro area surged, reaching levels not seen in decades. For instance, after hovering around 1-2% for much of the 2010s, HICP inflation began its rapid ascent, crossing the 5% mark in late 2021 and peaking at an estimated 10.6% in October 2022. While it has since decelerated, it remains significantly above the ECB’s target, standing at approximately 5.3% year-on-year in July 2023.

In response, the ECB initiated its rate hiking cycle in July 2022, delivering a larger-than-expected 50bp increase, ending eight years of negative rates. This was followed by a series of successive hikes – including further 75bp increases in September and October 2022, and subsequent 50bp and 25bp increments in early 2023 – pushing the main refinancing rate from 0% to its current level. Each meeting has been meticulously scrutinised by markets for clues on the terminal rate and the pace of future adjustments. The September 10 meeting, therefore, represents a continuation of this determined effort to rein in inflationary pressures that have become deeply embedded in the Eurozone economy.

The Critical Role of Energy Prices: Brent and TTF

A central theme in Nomura’s analysis, and indeed for the broader market, is the pivotal role of energy prices in shaping the ECB’s future policy decisions, particularly beyond the immediate September hike. The report identifies both Brent crude oil and Dutch TTF natural gas prices as crucial indicators for potential additional tightening risks extending as far as December 2026.

Brent crude oil, the international benchmark for oil prices, has a largely contemporaneous and direct impact on HICP inflation. Its movements are quickly reflected in the vehicle fuel component of the HICP basket. For instance, a sudden spike in Brent prices, possibly triggered by geopolitical tensions such as the Iran war, can almost immediately translate into higher prices at the pump, directly affecting consumer spending power and headline inflation figures. Market pricing for the ECB’s long-term trajectory is, therefore, heavily influenced by the volatile dynamics of the global oil market, with analysts closely monitoring developments in major oil-producing regions and their potential to disrupt supply. Recent data has shown Brent prices fluctuating significantly, from highs near $130 per barrel in early 2022 to periods below $80, before recent upticks pushed them back towards the $90 range.

In contrast, the pass-through of Dutch TTF natural gas prices is described as "more lagged and gradual, resulting in more persistent and broader inflationary pressures." The TTF (Title Transfer Facility) is a virtual trading point for natural gas in the Netherlands and serves as a key benchmark for European gas prices. Fluctuations in TTF prices impact not just household heating bills, but also the cost of electricity generation, industrial production, and even food processing, given natural gas’s role in fertiliser production. A sustained rise in TTF prices, potentially due to supply concerns (e.g., disruptions to Russian gas flows, competition for LNG cargoes, or colder-than-expected winters), can seep into the economy over several months, driving up a wider array of goods and services costs. This ‘second-round’ effect, through industrial inputs and utility costs, makes TTF a critical long-term inflation driver that the ECB cannot afford to ignore. European gas prices, after soaring to unprecedented levels above €300 per MWh in August 2022, have retreated significantly but remain volatile, with any upward trend posing a serious inflationary threat.

Broader Implications and Market Reactions

The implications of a sustained period of higher interest rates are far-reaching, affecting households, businesses, and government finances across the Eurozone. For consumers, higher rates translate directly into increased borrowing costs for mortgages, car loans, and consumer credit. This can dampen discretionary spending and reduce disposable income, particularly for those with variable-rate loans. While designed to cool demand and curb inflation, it also poses a risk to economic growth.

Businesses will face higher financing costs for investments and working capital, potentially leading to reduced capital expenditure, slower hiring, and tighter profit margins. Sectors heavily reliant on borrowing, such as real estate and construction, are particularly vulnerable.

From a currency perspective, higher interest rates in the Euro area generally make the Euro more attractive to foreign investors seeking higher returns, which can support its value against other major currencies like the US dollar. Nomura’s mention of "the euro area’s economic resilience" and the impact on "the euro" implicitly acknowledges this dynamic, suggesting that a stronger euro can also help mitigate imported inflation by making foreign goods cheaper.

The prospect of the ECB raising rates into "restrictive territory" signals a robust commitment to price stability, even if it comes at the expense of slower economic growth. This delicate balancing act between taming inflation and avoiding a severe recession is the central challenge facing the ECB. Analysts will continue to scrutinise incoming economic data, especially HICP releases and GDP figures, alongside energy market developments, to gauge the likelihood and magnitude of further rate hikes beyond September.

The market’s long-term pricing for ECB rates, extending to December 2026, reflects this complex interplay of inflation, growth, and energy risks. While immediate attention focuses on the September meeting, the underlying concerns about persistent inflation and the role of energy in shaping the longer-term outlook remain paramount. The potential for a December rate hike, explicitly linked to a further rise in Dutch TTF natural gas prices, highlights the central bank’s vigilance over the broad and lagged inflationary pressures emanating from the energy sector.

In conclusion, Nomura’s forecast for a 25bp hike in September aligns with prevailing market sentiment and the ECB’s stated commitment to price stability. However, the path forward remains highly contingent on evolving inflation dynamics, the resilience of the Eurozone economy, and crucially, the volatile trajectory of global energy prices. The ECB appears prepared to navigate a protracted period of monetary tightening if necessary to achieve its inflation target, even if it means venturing into economically restrictive territory.