New York Fed Study Confirms K-Shaped Economy: Spending Growth Skewed Toward High-Income Households

New York Fed Research Validates the K-Shaped Economy Phenomenon

The U.S. economy is experiencing a persistent and uneven recovery, with spending growth heavily concentrated at the top of the income ladder. This K-shaped economic trend, confirmed by new research from the Federal Reserve Bank of New York, highlights a widening gap between high-income households and those with lower incomes.

The findings, published in a blog post by New York Fed researchers on Friday, underscore a critical economic risk: reliance on a single segment of the economy for spending growth could lead to sharp pullbacks in the event of a market downturn.

Inflation and Asset Wealth Drive the Economic Divide

Low-income households have been disproportionately affected by inflation, which has remained persistently above the national average. This has left them with little financial cushion to absorb additional shocks, further widening the economic gap.

The researchers emphasized the role of financial assets in sustaining spending among high-income households. Since 2023, the real net worth of the top 1% of earners has surged by more than 25%, driven largely by gains in financial assets. In contrast, the middle 40% of households saw their real net worth increase by less than 10%.

"Reliance on a single segment of the economy has important implications for spending growth and its fragility, as well as for economic vulnerability and policy."

The New York Fed warns that the substantial role of financial assets raises concerns about the potential vulnerability of retail spending to a financial market correction.

Spending Growth Trends Since 2023

Since January 2023, real retail spending has grown unevenly across income groups, according to the New York Fed data:

• High-income households (earning more than $125,000 annually): Cumulative real spending growth of about 7.6% through March 2026.
• Middle-income households: Gained about 3%.
• Low-income households (earning under $40,000): Gained just over 1%.

Before the COVID-19 pandemic, lower-income households actually outpaced the wealthy in spending growth. However, the divergence began in 2023 after pandemic-era relief programs for lower- and middle-income households expired. Researchers note that the split has persisted, with high-income households driving most of the recent growth in retail spending.

Despite this uneven growth, real spending has turned negative across all income groups in recent months, even as the gap between high- and low-income households remains.

Wage Growth Alone Does Not Explain the K-Shaped Trend

Wage growth has been inconsistent across income groups, making it an incomplete explanation for the K-shaped dynamic. The New York Fed identifies wealth and inflation as the more powerful drivers of this economic divide.

Strong consumer spending among the richest consumers is supported by substantial asset returns. The researchers highlight that the recent growth in retail spending has been "mostly due to the high-income households," raising questions about the sustainability of this trend.

Economists Debate the K-Shaped Narrative

While the New York Fed study confirms the K-shaped economy, some economists argue that the trend may not be as new as it appears. For example, Pantheon Macroeconomics contends that the wealthiest households have accounted for a roughly stable 40% share of total consumer spending for 25 years. This finding does not necessarily contradict the New York Fed's research but raises questions about whether the economy's reliance on a single cohort is a new vulnerability or a long-standing norm of American consumption.

As the economy continues to navigate disruptions such as geopolitical conflicts, energy price volatility, and AI-driven uncertainty, the K-shaped trend underscores the fragility of an economy heavily dependent on high-income spending.