The Four-Layer Tariff Stack: What US Importers Actually Pay on Chinese Goods in 2026
Understanding the tariff math that’s reshaping supply chains
US tariffs on Chinese imports in 2026 are not a single rate — they’re a layered stack of up to four separate duties, each with its own legal authority, rate, and expiration date. For importers still running tariff models based on 2025 numbers, the math has changed significantly.
The four layers, as broken down by trade policy analysts at China Briefing and the USTR:
Layer 1: Base MFN duty
The product-specific Most Favored Nation rate from the Harmonized Tariff Schedule. Range: 0% to 32% depending on the HTS code. Many electronics carry 0% MFN under the Information Technology Agreement; apparel runs 16-32%; consumer goods typically 3-10%.
Layer 2: Section 122 surcharge
A flat 10% tariff on nearly all imports globally, effective February 24, 2026. This replaced the IEEPA reciprocal tariffs that the Supreme Court struck down on February 4 in V.O.S. Selections Inc. v. United States. Section 122 has a built-in 150-day sunset — it expires around July 24, 2026, unless Congress acts.
Layer 3: Section 301 surcharge
Additional duties on Chinese-origin goods, imposed in 2018-2019 and modified through 2026. Rates vary by product: Lists 1-3 face 25%, List 4A faces 7.5%. Specific sectors face higher rates — EVs at 100%, semiconductors at 50%, solar cells at 50%, batteries at 25%. Section 301 was not affected by the Supreme Court ruling and remains in effect.
Layer 4: Section 232 duties
Sector-specific tariffs on steel (50%), aluminum (50%), copper (50%), and semiconductors (25%). These stack on top of Section 301 for Chinese-origin goods, subject to anti-stacking rules from the April 29, 2025 executive order.
Real-world example: Chinese consumer electronics
A $10,000 CIF shipment of consumer electronics from Shenzhen under HTS 8517.13.00 (smartphones): Base MFN = 0%, Section 122 = 10% ($1,000), Section 301 = 7.5% ($750), Section 232 = 0%. Total effective rate: 17.5%, or $1,750 in duties on a $10,000 shipment.
For Chinese EVs, the stack is crushing: Base MFN (2.5%) + Section 122 (10%) + Section 301 (100%) = 112.5% total tariff. A $30,000 BYD Seal would face $33,750 in US import duties, making it economically unviable.
What’s coming next
On June 2, 2026, the USTR proposed a new 12.5% tariff on China under a Section 301 investigation into forced labor. The comment period closes July 6, with a hearing on July 7. If enacted, this would add a fifth layer to the stack.
The Section 122 tariff’s July 24 expiration is the next major deadline. What replaces it depends on Congressional action and the outcome of ongoing trade negotiations between Washington and Beijing.
Sources
- China Briefing, “Breaking Down the US-China Trade Tariffs: What’s in Effect Now?” June 3, 2026
- NewBuyingAgent, “2026 China Tariff Update”
- TariffsTool, “Tariff News 2026: Latest US Trade Policy Updates”
- USTR, Section 301 Forced Labor Investigation, June 2, 2026