There's a Mind-Boggling Number of Rich People in America

Economists Owen Zidar and Eric Zwick estimate that roughly 3 million U.S. private-business owners—termed "Main Street Millionaires"—hold average wealth of about $25 million. Their research examines how pass-through entities and accounting practices that proliferated after the 1986 Reagan tax reforms obscure the tax liabilities and economic influence of wealthy business owners. The findings are primarily structural and analytical rather than an immediate market catalyst.

Analysis

This is not a near-term market catalyst, but it reinforces that changes to pass-through taxation can have larger real-economy effects than headline corporate-tax changes imply. A higher effective tax rate on owner-operated businesses would raise the hurdle rate for incremental hiring, fleet purchases and capex, creating a 6-18 month drag on small-business-sensitive lenders (KRE) and equipment/distribution exposure (URI, FAST, GWW). Conversely, publicly traded consolidators can gain share if smaller competitors face reduced after-tax cash flow or succession-planning pressure.

The more investable implication is potential consolidation in fragmented verticals rather than a broad "small business" trade. Public auto retailers (LAD, AN, PAG), restoration/construction platforms (IBP), and specialty distributors with acquisitive models could benefit if policy uncertainty widens the valuation discount applied to private businesses. That thesis requires evidence of transaction multiples falling or dealer/contractor succession activity accelerating; absent those indicators, tax-policy rhetoric alone is insufficient to underwrite a position.

Consensus tends to frame tax changes as a direct hit to wealthy households and consumer spending. The overlooked channel is financial intermediation: private-business liquidity is often tied to bank credit, so lower retained earnings or delayed asset sales can increase credit utilization and ultimately delinquencies at regional banks. This becomes material only if it coincides with weakening small-business optimism, rising C&I criticized loans, or a material increase in KRE constituents' net charge-off guidance over the next 1-3 quarters.

Key Decisions for Investors

• No immediate directional trade; treat this as a policy-monitoring theme rather than an earnings catalyst.
• Create a 1-3 month watchlist pairing long LAD or AN against KRE if announced tax changes explicitly reduce pass-through advantages and dealer M&A volumes accelerate; target a 10-15% relative return, with exit if regional-bank C&I credit quality remains stable and private-dealer transaction multiples do not soften.
• Monitor quarterly C&I criticized-loan balances, small-business credit utilization, and charge-off guidance at KRE constituents. A broad upward revision in those metrics would support reducing regional-bank exposure before the credit effect reaches earnings.
• For 6-18 months, screen fragmented public consolidators including IBP, SITE, LAD and PAG for acquisition pipeline commentary and purchase-multiple compression. Initiate only after independently verifiable evidence that private-owner exit activity is increasing; policy discussion without transaction data is not a sufficient entry signal.