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Dollar firms as ECB hikes and oil jumps ahead of US CPI

Dollar firms as ECB hikes and oil jumps ahead of US CPI
Markets · 2026
Photo · Eleanor Whitfield for Daily Digest Invest
By Eleanor Whitfield Markets Editor-in-Chief Sep 10, 2026 5 min read

The US dollar steadied and edged higher on Thursday, as the euro weakened after the European Central Bank (ECB) delivered another quarter-point interest rate increase. At the same time, a rise in oil prices to $107.63 per barrel and producer price data that matched expectations helped support the greenback, with traders turning their attention to Friday's crucial US inflation report.

ECB hikes, but euro slips

The ECB raised its key deposit rate by 25 basis points, bringing it to a level that still reflects a restrictive stance aimed at curbing inflation. However, the euro fell to about $1.1612, as investors looked past the immediate rate increase and focused on the potential drag that higher borrowing costs could have on the eurozone economy.

This pattern is not unusual. When a central bank raises rates, the currency often strengthens because higher yields attract foreign capital. But if the market believes the hike will slow growth significantly, the currency can weaken instead. That appears to be what happened with the euro, as traders weighed the ECB's tightening against the risk of a downturn.

Dollar supported by steady producer prices and oil

In the United States, the latest producer price index (PPI) — a measure of inflation at the wholesale level — came in as expected, suggesting that pipeline price pressures are not accelerating. This steadied the dollar, as it reduced the chance of an unexpectedly hot inflation reading that could force the Federal Reserve to act more aggressively.

Meanwhile, oil prices climbed to $107.63 a barrel, a level that has historically been associated with higher inflation and a stronger dollar, since oil is priced in dollars and higher energy costs can boost demand for the currency. The jump in oil also adds to the inflation narrative, as energy costs feed into consumer prices.

For a broader view of how oil at these levels affects currencies, see how oil's return to $100 pressures Canada's dollar and how the rand slipped as oil topped $105.

Friday's CPI report is the main event

The focus now shifts to the US Consumer Price Index (CPI) for the latest month, due out Friday. CPI is the most widely watched measure of inflation, and it will give investors a clearer picture of whether price pressures are cooling enough for the Federal Reserve to pause its rate-hiking cycle.

Economists and traders will be looking at both the headline number and the core figure, which excludes volatile food and energy prices. A hotter-than-expected reading could raise fears of more Fed tightening, which would likely boost the dollar further. A cooler number could ease those worries and potentially weaken the greenback.

The stakes are high because the Fed has been trying to bring inflation down to its 2% target without triggering a recession. The outcome of Friday's report will influence expectations for the Fed's next policy meeting and could set the tone for markets into the weekend.

What it means for investors

For everyday investors, currency moves matter in several ways. A stronger dollar can be a headwind for US multinational companies, as their overseas earnings are worth less when converted back to dollars. It can also make imported goods cheaper for US consumers, which could help ease inflation.

On the other hand, a weaker euro can be a tailwind for European exporters, as their goods become more competitive abroad. But it also makes imports more expensive, which can add to inflation in the eurozone.

For those with international investments, currency fluctuations can affect returns. A US investor holding European stocks, for example, would see gains reduced if the euro falls against the dollar. Conversely, a European investor holding US assets would benefit from a stronger dollar.

The oil price jump is also worth watching, as higher energy costs can squeeze consumers and businesses, potentially slowing economic growth. This is particularly relevant for emerging markets, which often feel the pinch of higher oil prices and a stronger dollar. For instance, Ghana's cedi and Uganda's shilling have faced fresh dollar pressure in this environment.

Looking ahead

Beyond Friday's CPI, investors will be monitoring central bank communications for hints about future policy moves. The ECB's hike, while expected, was accompanied by a tone that suggested it may be nearing the end of its tightening cycle, which could keep the euro under pressure.

In the US, the Fed has indicated that it will be data-dependent, meaning each inflation and jobs report will be scrutinized for clues. The dollar's direction in the coming weeks will likely hinge on whether inflation continues to moderate or shows signs of re-accelerating.

For now, the dollar's rebound reflects a market that is bracing for the possibility that US interest rates may stay higher for longer, while the euro's slide shows that the ECB's hike was not enough to offset growth concerns. As always, the key for investors is to stay diversified and keep an eye on how these macro trends play out in their portfolios.

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