Despite tax cuts, total real after-tax income for Americans has shown zero growth year-over-year as of March. This stagnation in aggregate purchasing power, combined with a low savings rate, signals significant vulnerability for consumer spending, the economy's primary engine.

The US economy is not broadly strong; its perceived strength is almost entirely driven by a massive, concentrated bet on AI. This singular focus props up markets and growth metrics, but it conceals widespread weakness in other sectors, creating a high-stakes, fragile economic situation.

Real consumer spending is up only 1% year-to-date (non-annualized), which annualizes to a weak 1.5%. This is a significant slowdown from the typical 2-2.5% growth in previous years, indicating that consumers are substantially pulling back their expenditures.

Contrary to popular belief, the U.S. consumer shows weakness. Nominal goods consumption is up only 3.5% over the last year, and real spending is below 2%. This indicates that price inflation is primarily driven by supply shocks, not strong demand, challenging the narrative of a resilient consumer.

While headline GDP figures seem positive, the US economy shows signs of weakness. Growth is driven by high-income households drawing down savings, while the job market is stagnant outside of the healthcare sector. This creates a "K-shaped" dynamic where macro numbers obscure underlying fragility.

Further U.S. economic acceleration is unlikely as underlying growth drivers are strained. Economic models suggest consumer consumption is 'overshooting its fundamentals,' indicating it's unsustainable. Concurrently, the incremental growth from AI-related capital expenditure is becoming harder to achieve, suggesting a potential plateau for this key investment area.

In 2022, a hot labor market and high savings from stimulus buttressed the economy. Today, households are already dissaving to maintain spending amid a weakening labor market. An oil shock now adds a 1-1.5% price hike across goods, threatening to push real household consumption to zero and stall the economy.

The personal saving rate has dropped dramatically to 3.5%, fueled by the stock market wealth effect. This is historically low and below equilibrium, suggesting that consumers cannot continue to fuel economic growth by saving less and the current spending pace is unsustainable.

Aggregate US consumer strength is misleadingly propped up by the top 40% of upper-income households, whose spending is buoyed by appreciating assets. This masks weaknesses among lower- and middle-income groups who are more affected by inflation, creating a narrowly driven economic expansion.