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Tariffs take Supreme hit

24 Feb 2026 | 3 minutes to read

A good week for

  • UK and European equities, which both advanced +2.6% in sterling terms

  • Brent crude oil, which added a further +5.9% 

A bad week for

  • Japanese equities, which bucked the wider trend for equity markets over the week to fall -0.7%
  • Sterling, which weakened against both the US dollar and the euro

Tariff man and the Supremes

In a long-awaited decision, the US Supreme Court struck down the sweeping reciprocal and country-specific trade tariffs introduced by the Trump administration. The court ruled that the administration did not have the constitutional authority to impose the tariffs without approval from Congress. The ruling centred on the US President’s use of the International Emergency Economic Powers Act (IEEPA), a 1977 law which gives the President the power to “regulate” trade in response to an emergency. Trump’s assertion had been that the persistent US trade deficit – which sees the US import more than it exports – represented a “threat”. Trump has also seemingly used tariffs (or the threat of tariffs) as a foreign policy tool, suggesting they can bring warring countries to the negotiating table. Nevertheless, the court concluded that IEEPA does not grant the President unilateral powers to impose such tariffs, checking the President’s use of executive authority. 

While the ruling invalidates a large swathe of existing tariff measures, Trump moved quickly to signal a policy response. Less than 24-hours after the ruling, he announced plans to use a different law to impose a temporary (150 day) tariff rate on US imports from all countries of 15%. During this window, the administration intends to work further on new tariff measures, with numerous other legal routes to rebuild tariff buffers available. 

The decision may promote greater stability in US global trade policy. Alternative routes through which tariffs might be imposed are less straightforward and more limited than IEEPA. However, the ruling raises complex questions around whether billions of dollars in previously collected duties may need to be refunded to importers, an issue which is expected to be contested over the months ahead. Tariff revenue how the US government planned to partially contain its fiscal deficit and debt burden. Although, tariff income (or lack thereof) is relatively immaterial in the wider context of US public finances.

Trading places

Despite the imposition of Trump’s tariffs, goods imported into the US continued to outpace exports last year, with the US trade deficit reaching a new high. The gap between the value of goods imported and those sold overseas widened by 2% compared to 2024, reaching $1.2trn, the Commerce Department reported. This runs counter the White House’s objective of reducing US reliance on foreign goods. The rise is particularly notable given a sharp fall in trade with China, which has been subject to high tariffs. Reduced Chinese imports have largely been replaced by goods from other countries such as Mexico, Taiwan and Vietnam, rather than by increased domestic production.

While tariffs raise the cost of foreign goods, they do not automatically reduce overall imports. US consumers and businesses continue to buy a large volume of overseas goods. Demand for computer chips to support massive artificial intelligence investment remains high for example. And some importers have been able to nimbly switch their supply chains away from the most highly tariffed countries. Some exporters have also rerouted shipments through third-party countries. While the US dollar weakened over 2025, it is still relatively strong on a longer-term perspective, which makes American exports more expensive abroad. Weaker global growth has also dampened demand in key export markets. But the broader effects of trade policy changes will likely only become clear in the fullness of time.

UK labouring towards spring rate cut….

It was a bumper week for UK economic data. Headline Consumer Price Index (CPI) inflation cooled to 3% year-on-year in January, according to the Office for National Statistics (ONS). This was down from the 3.4% recorded in the 12-months to December and in line with economists’ expectations. Core inflation, which excludes more volatile, seasonal or short-term components of the inflation basket, stood at 3.1% in January, down from 3.2% in December. The figures mean inflation in the UK has fallen to its lowest annual rate since March last year. The drop was driven by lower fuel, food and airfare prices, with airfares falling back after increasing in December. 

The inflation print came hot on the heels of UK jobs and wage data which suggested further labour market softness. The ONS reported that the unemployment rate climbed to 5.2% in the three months to December – up from 5.1% and the highest level in five years. Annual wage growth also weakened in the last three months of 2025. Notably, younger workers appear to be shouldering the brunt of the observed slowdown in hiring, with unemployment amongst those aged 16-24 rising to 16.1%. According to data published by the Organisation for Economic Co-operation and Development (OECD), youth unemployment in the UK now surpasses the EU average. The rise in employer National Insurance contributions and the minimum wage have increased employment costs for businesses. And younger workers are potentially being increasingly priced out of the market. 

Together with an underwhelming GDP print last week, the inflation and labour market data are likely to increase confidence in the Bank of England’s (BoE) prevailing view that headline inflation will soon drop to the 2% target. Further interest rate cuts therefore seem increasingly justifiable. A cut by April is now fully priced in, with an earlier move in March thought more than likely. 

….with some reasons for optimism

While green shoots of recovery in the labour market were hard to come by, there were reasons for optimism elsewhere amongst last week’s UK data releases. Businesses and consumers showed signs of recovery in the early stages of 2026. A busy week for ONS data saw retail sales volumes rise by a better-than-expected 1.8% in January. It was the strongest monthly growth since May 2024 and comfortably surpassed expectations of a 0.2% increase. On an annual basis, retail sales volumes advanced to 4.5% – a near four-year high – up from 1.9% in December and above expectations of 2.8%. The data will make welcome reading for the Treasury, with the Chancellor keen to see the government’s economic plan start to bear fruit in 2026. However, the uptick – which was partly driven by relatively niche components like online jewellers following the rise in gold prices – could prove temporary. Over the three months to January sales volumes were close to flat, while the weaker jobs market might temper consumer enthusiasm. Nevertheless, business confidence seems buoyed in the early months of the year as pre-Budget uncertainty fades. The latest composite Purchasing Managers' Index (PMI) report for the UK suggested a further improvement in business sentiment, rising to 53.9 – its highest level since April 2024. PMIs are the result of monthly business surveys, with any reading above 50 indicating growth in activity. As such, they can serve as leading economic indicators. The PMI readings suggest economic growth will accelerate in the first quarter of the year after GDP advanced just 0.1% in the final quarter of 2025.

Other insights

  • Federal Reserve (Fed) minutes – The minutes from the latest Federal Open Markets Committee (FOMC) meeting suggested a more hawkish tilt amongst officials, with several expressing a willingness to hike rates again if inflation proves resilient
  • US inflation – The latest print for the Fed’s preferred measure of inflation, the Personal Consumption Expenditures (PCE) price index, showed US inflation rising more than expected. Core PCE, excluding volatile components, came in at 3% for 2025. Futures markets continue to expect two US rate cuts in 2026
  • US GDP – The US economy grew at an annualised rate of just 1.4% in the final quarter of 2025, well below forecasts of 3%. Consumer spending increased at a slower pace, while government spending contracted over a quarter marked by a record-length government shutdown
  • US mortgages – The average rate on a 30-year fixed mortgage in the US dropped to c.6% – the softest level since September 2022 – according to data from federal mortgage corporation, Freddie Mac. Lower rates should improve affordability for homebuyers and strengthen the financial position of homeowners, with many able to reduce mortgage payments significantly
  • UK government finances – A record monthly surplus was recorded in January as the Treasury took in more than it spent due to higher tax receipts. Chancellor Reeves is due to deliver an update on the Budget next week, with the boost to Treasury coffers likely to ensure the event is low key
  • UK fiscal policy – The Institute for Fiscal Studies (IFS) suggested that UK government borrowing rules require a rethink. The Chancellor’s fiscal rules determine how much headroom the government has for tax and spending plans. But the IFS stated that the framework was “dysfunctional” and that policy was being driven by a system that is “boiled down to a single number”
  • European Central Bank (ECB) President – A report last week suggested that Christine Lagarde may step down early as president of the ECB. According to the FT, Lagarde is considering leaving before France’s 2027 presidential election, potentially denying a possible right-wing president in France any influence over a successor. Lagarde played down the suggestion, which could undermine ECB independence
  • Japanese interest rates – The International Monetary Fund (IMF) urged Japan to continue raising interest rates and cautiously manage fiscal policy. Warning that fiscal giveaways and still accommodative monetary policy could limit capacity to respond to future economic shocks. The advice follows dovish Prime Minister Sanae Takaichi’s landslide win
  • Japanese GDP – Japan’s economy grew 0.1% quarter-on-quarter in Q4 2025, rebounding from a -0.7% drop over the previous quarter, and narrowly avoiding a technical recession. The print fell short of market expectations which had anticipated a 0.4% increase
  • Battle for Warner Bros. – Warner Bros Discovery reopened sale talks with Paramount, granting seven days to table a “best and final” offer, which either tops the takeover deal already agreed with Netflix or sees them step aside. The company has previously rejected a series of offers from Paramount, resulting in a hostile $108bn bid
  • Open AI funding round – Nvidia is close to finalising a further $30bn investment in OpenAI, taking a stake in one of its largest customers. The deal is part of an OpenAI fundraising round which may exceed £100bn. It would value the ChatGPT maker at c.$830bn - with investments also expected from Amazon, SoftBank and Microsoft - and amount to one of the largest private financings ever
  • Private market liquidity risks – Shares in US private investment managers fell sharply last Thursday after alternative asset manager, Blue Owl Capital, restricted investor withdrawals from one of its private credit funds. The move suggests investors might be reassessing the liquidity risks involved with such investments

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