Trump Tariffs: What Mid-Market PE Needs to Know Now
Your portfolio's China exposure is 3.8x higher than you think. Here's what the data shows and what questions to ask.
The Diagnostic
Most PE firms think they understand their tariff exposure. They don't.
Brookings research shows that "look-through" analysis (tracing inputs through Tier 2 and Tier 3 suppliers) reveals China dependence that's 3.8 times higher than face-value measurements. Meanwhile, only 2% of companies have full visibility into their extended supplier networks, per McKinsey.
The implication for due diligence is clear: asking "what's your China exposure?" isn't enough. The real question is: what's your suppliers' China exposure?
Current Tariff Rates (January 2026)
| Country | Base Rate | Steel/Aluminum | Exemptions | Legal Status |
|---|---|---|---|---|
| China | 20% (10% IEEPA + 10% reciprocal) | 50% | 178 product exclusions | SCOTUS Review |
| Canada | 35% | 50% | USMCA goods exempt (~87%) | SCOTUS Review |
| Mexico | 25% | 50% | USMCA goods exempt (~84%) | SCOTUS Review |
| EU | 15% cap | 50% | Aug 2025 framework | Stable |
| UK | 10% | 50% | May 2025 deal | Stable |
| Rest of World | 10% | 50% | Varies by deal | Baseline |
The Hidden Exposure Problem
What Companies Report vs. Reality
Vuzix Corporation reports only 2.1% direct China revenue. No Chinese customers or suppliers on paper. But their DLP display technology comes from Texas Instruments, which sources silicon wafers, rare earth elements, and semiconductor materials from China.
This pattern repeats across portfolios. Face-value exposure understates true risk by nearly 4x.
Sector Vulnerability
The "China+1" Illusion
"Diversified to Vietnam" or "nearshored to Mexico" doesn't mean China-free. Chinese FDI is surging in both countries, and products assembled there often contain Chinese components.
Vietnam
- $4.73B: Chinese FDI in 2024
- 955: New Chinese projects (28% of all foreign projects)
- 65%: Vietnamese FDI workforce in low-value assembly
- $123.5B: Vietnam's trade surplus with US (3rd largest)
Mexico
- ~$15B: Estimated PRC-linked investment (vs. $2B official)
- 60%: YoY increase in Chinese container arrivals (Q1 2024)
- $5.3B: Auto parts imports from China (up from $2B in 2013)
- 11: Anti-dumping probes vs. China in 2025
Nomura analysis: adjusting for circumvention, China's direct + indirect share of US imports fell only from 20.6% (2017) to 18.5% (2023), far less than face-value data suggests.
Portfolio Impact Assessment
The Caveat
These assessments focus on direct exposure. As Alvarez & Marsal notes: "While most fund managers understand their direct tariff exposure, fewer have drilled into the potential impact of secondary suppliers. What you don't know is the inflationary exposure...when your supplier now passes on a 25% increase."
Due Diligence Questions That Matter
Based on William Blair's tariff DD framework and our analysis:
Supply Chain
- Where do your Tier 2 and Tier 3 suppliers have production sites?
- What percentage of critical components are single-sourced from China or China-proxy locations?
- For "Vietnam-sourced" or "Mexico-sourced" inputs, what's the actual country of origin for sub-components?
Financial Impact
- What's gross margin sensitivity to 10-25% input cost increases?
- Can the company pass costs to customers without losing share?
- What's the timeline and capex for supplier diversification?
What to Watch
| Event | Timeline | Implication |
|---|---|---|
| Supreme Court IEEPA decision | Q1 2026 | Could invalidate majority of tariffs; $200B+ refund potential |
| USMCA review begins | July 2026 | Current exemptions (~85% of Canada/Mexico trade) at risk |
| US-China arrangement expires | Nov 2026 | 10% reciprocal rate freeze ends; could escalate to 34%+ |
The Bottom Line
Standard tariff exposure analysis understates true risk by nearly 4x. Mid-market PE firms should assume their portfolios have more China exposure than reported, and due diligence should focus on Tier 2/3 suppliers, not just direct sourcing.
The firms asking "what's your China exposure?" are asking the wrong question. The right question: "what's your suppliers' China exposure?"
Data Sources
| Source | Data | Date |
|---|---|---|
| Brookings Institution | 3.8x hidden exposure multiplier | 2024 |
| USTR | Official tariff rates and exclusions | 2025 |
| Congressional Research Service | Presidential tariff actions timeline | 2025 |
| Rhodium Group | China supply chain analysis, sector exposure | 2024 |
| McKinsey | 2% supply chain visibility statistic | 2024 |
| PwC | PE tariff impact analysis | 2025 |
| William Blair | DD question framework | 2025 |
| Nomura | Circumvention analysis | 2024 |