What the K-Shaped Economy Means for Your Cash Flow Forecast

Your board deck might show GDP growing at a healthy clip, but some of your customers may quietly be stretching their payment terms, and certain vendors are starting to show signs of strain.

On May 1, 2026, the NY Fed confirmed that U.S. consumption has split into two divergent tracks since 2023, with high-income households growing real spending by about 7.6% while low-income households have barely cleared 1%.

In this guide, we explore what the NY Fed's research confirms about the K-shaped economy, how the spending split maps to the sectors your customers and vendors operate in, and which cash flow planning adjustments are worth making this quarter.

In brief:

• NY Fed confirms K-shaped spending since 2023; High-income households (over $125,000 annually) grew real spending by about 7.6%; low-income households (under $40,000 annually) grew by just over 1%. The divergence started after pandemic relief programs ended, not during the recovery.
• Top earners now drive nearly half of all U.S. spending; The top 10% of earners account for nearly 50% of consumer spending, the highest share on record since this data was first collected in 1989.
• Consumer debt stress is at a multi-year high; Overall consumer debt delinquency hit 4.8% in Q4 2025, the highest since 2017. Credit card delinquency in the lowest-income ZIP codes reached 22.8%.
• Sector divergence mirrors the income split; Construction and financial services post above-average optimism scores. Retail trade and food service are contracting, with BLS benchmark revisions removing about 128,300 retail jobs.
• Aggregate forecasts can mask the split. A segmented revenue model and a 13-week rolling cash flow forecast provide your finance team with earlier signals than monthly P&L reporting alone.

What the NY Fed says about the K-shaped economy

On May 1, 2026, the NY Fed's Research and Statistics Group published a two-part series on Liberty Street Economics with a direct conclusion: consumption has exhibited a K-shaped pattern since 2023, although not in the pre-COVID period or during the post-COVID recovery.

The finding separates the current divergence from pandemic-era disruption. The split between high- and low-income spending trajectories began after pandemic relief programs ended and has widened since.

The NY Fed's December 2025 Economic Heterogeneity Indicators report puts it plainly: in real terms, consumption by high-income households has grown, middle-income consumption remained flat, and low-income consumption fell by November 2025.

A K-shaped economy is one in which aggregate growth figures mask divergence, with higher-income households and larger businesses moving upward while lower-income households and smaller businesses stagnate or decline.

Federal Reserve Governor Lisa Cook noted in February 2026 that GDP grew 4.4% annualized in Q3 2025, while that strong growth likely masks a challenging situation facing many families, with low- and moderate-income households under pressure.

If your company falls in the 50-to-500-employee range, the industry benchmarks and macro headlines you've been using to build budgets may not reflect the economic reality your customers actually live in.

The K-shaped spending gap by the numbers

The spending divergence is the most operationally relevant data point if you're building a cash flow forecast. The top 10% of earners now account for more than 45 percent of all U.S. spending, the highest share on record since 1989.

Spending by the top 10% grew 62% between Q3 2020 and Q3 2025, while spending by the lower third contracted in mid-2025 and remained nearly flat through early 2026. Bank of America Institute's January 2026 Consumer Checkpoint showed card spending per household rising +2.4% year over year for higher-income households and only +0.4% for lower-income households.

The wage data points in the same way. As of December 2025, higher-income workers saw faster year-over-year wage growth than middle- and lower-income workers, while the NY Fed's own EHI data confirms that low-income households also experienced higher inflation than the national average, meaning those smaller wage gains bought even less.

By February 2026, Bank of America warned that the K-shaped gap was widening between higher- and middle-income households, alongside the existing gap with lower-income households.

If your customer base or vendor pool sits in that middle tier, the safe-harbor assumption may no longer hold, and some economists are already describing this as a trifurcated or E-shaped pattern.

Which sectors sit on which arm of the K

For companies tracking where their customers or vendors fall, the sector data offers a practical starting point. The divergence shows up at the sector level just as clearly as it does at the household level. The NFIB data from October 2025 and BLS benchmark revisions from early 2026 provide the clearest sector-level breakdowns.

Sectors trending upward

Four sectors show consistent strength across multiple indicators:

• Construction: Posted an NFIB Optimism of 105.5 in October 2025, the only industry above its historical average and the only one where optimism increased quarter over quarter.
• Technology and AI infrastructure: Showed strength through Q3 2025 and continued to benefit from investment concentration.
• Financial services and wholesale trade: Tied for the highest self-reported business health ratings among small business owners at 71%.
• Healthcare: Financial performance varied across the sector between 2019 and 2023, with some hospitals improving while others saw margins remain under pressure.

If your revenue comes primarily from these sectors, upper-K exposure is relatively solid, but the picture changes for companies that serve or source from the segments below.

Sectors trending downward

Retail trade is the weakest sector by nearly every NFIB measure, with earnings trends at –29% net and BLS benchmark revisions cutting about 128,300 retail jobs from the payroll count. Food service saw chain closures throughout 2025, including Starbucks, Wendy's, and Bloomin' Brands.

Manufacturing optimism fell 5.8 points quarter over quarter, and information/media also absorbed downward BLS benchmark revisions. These are the segments where vendor fragility and customer payment stress are most likely to appear first in your receivables aging.

How credit stress reaches your receivables

The NY Fed's household debt and credit data paint a picture of a consumer base under measurable strain at the lower end. That strain can directly affect your accounts receivable.

Four data points from Q4 2025 capture the scale:

• Overall delinquency: The share of debt in some stage of delinquency reached 4.8% in Q4 2025, the highest level since 2017.
• Credit card stress by ZIP code: Delinquency in the lowest-income ZIP codes hit 22.8%, compared to 8.3% in the highest-income areas.
• Mortgage delinquency: Serious delinquency rates in the lowest-income ZIP codes surged from roughly 0.5% to roughly 3.0% since 2021, while borrowers in the highest-income areas remain largely insulated from these pressures.
• Small business debt capacity: The Federal Reserve's November 2025 Financial Stability Report stated that the capacity of small businesses and risky privately held firms has declined in recent years.

Customers experiencing credit stress at home often extend payment terms with vendors first, before their situation becomes public knowledge. If your DSO has been widening over the last few quarters, this data may explain why.

What to adjust in your cash flow planning right now

Standard financial planning assumes the economy moves in one direction. In a K-shaped economy, it moves in two directions at once, and your forecast needs to account for that. Four adjustments make sense this quarter.

1. Segment the revenue forecast by customer exposure

A single base-case projection blends healthy and stressed customer segments, hiding risk until it becomes a cash problem. Build two separate revenue scenarios: one for customers and product lines serving upper-K markets, one for segments under stress.

Model what happens to your cash position if the stressed segment deteriorates 10 to 20% while the healthy segment holds flat. Companies operating in the same macro conditions can produce very different outcomes when they recognize segment-level divergence early.

2. Switch to a 13-week rolling cash flow forecast

Monthly P&L-based reporting aggregates segments and obscures the direction cash is actually moving. A 13-week rolling forecast built from accounts receivable schedules, accounts payable schedules, and bank balances gives your finance team earlier warning before a gap becomes a crisis.

The weekly forecast also needs qualitative input from the team on why actuals deviate from projections, because the numbers alone don't reveal whether a customer paid late due to a processing delay or because they're struggling.

3. Audit the vendor base for fragility

Vendors face the same K-shaped pressures as every other business. The Fed's Financial Stability Report confirmed a decline in debt-servicing capacity among small businesses and risky privately held firms.

If a critical vendor represents more than 5% of your cost structure and operates in a lower-K sector, build at least one named backup source before the need arises. Establishing alternatives while conditions are stable costs very little; scrambling under pressure is expensive and sometimes impossible.

4. Track segment-level metrics alongside aggregates

In your next monthly close, segment your top 20 customers by industry and income-exposure profile. Calculate DSO and working capital metrics separately for each group. If the two groups are diverging, the aggregate numbers may be masking a developing problem.

Revenue concentration risk intensifies in a K-shaped environment because a customer losing ground on the lower arm often transmits that stress upstream through extended terms, reduced orders, or renegotiated contracts.

Frequently asked questions about the K-shaped economy

What did the NY Fed find about the K-shaped economy?

The NY Fed confirmed that U.S. consumption has diverged across income tiers since 2023, with high-income households (over $125,000) growing real spending by about 7.6% while low-income households (under $40,000) grew just over 1%. The divergence is distinct from the post-COVID recovery period and started after pandemic relief programs ended.

How does the K-shaped economy affect small and mid-size businesses?

Companies with 50 to 500 employees can face tighter financing conditions and more uneven demand than aggregate macro numbers suggest. If your customer base skews toward middle- or lower-income segments, demand compression and credit stress may already be showing up in your receivables aging or vendor reliability.

Should I change my cash flow forecast because of this?

A segmented forecast provides a clearer picture than a single base case because upper-K and lower-K customers do not move in the same way. A 13-week rolling cash flow forecast, updated weekly using actual receivables and payables, also provides earlier warning than monthly P&L reporting.

Which sectors are most at risk in a K-shaped economy?

Retail trade, food service, and manufacturing show the clearest weakness in current data. Retail posted NFIB earnings trends of –29% net and absorbed the largest BLS employment benchmark revision at –128,300 jobs. Construction and financial services are on the upper arm, with construction the only sector tracking above its historical optimism average.

Is the K-shaped economy getting worse?

Bank of America Institute data from February 2026 shows the gap expanding to include middle-income households, which some economists describe as a trifurcated or E-shaped pattern. The Conference Board LEI declined 0.6% in March 2026, major forecasters assign roughly a 35% probability of a recession in 2026, and borrowing conditions for smaller businesses remain tight.