Epoxy Resin Tariffs in 2026: What a Price Increase Should Explain

There is no single tariff-driven price increase that applies to every epoxy resin or two-part adhesive in 2026. For U.S. buyers, the relevant questions are the product’s customs classification, origin, producer, applicable exemptions and whether the quote already includes duties. A 10%–12.5% tariff headline is not a forecast for the price of your next kit.

U.S. import context; updated October 30, 2026.

What changed—and what was already in place

Two separate actions matter:

• Epoxy-specific trade remedies: On May 27, 2025, Commerce published antidumping duty orders covering certain epoxy resins from South Korea, Taiwan and Thailand, plus countervailing duty orders covering South Korea and Taiwan. These address dumping and subsidies, respectively. They were not introduced in 2026. (AD orders, CVD orders)
• Broader forced-labor Section 301 duties: These generally apply to covered goods entered for consumption, or withdrawn from warehouse for consumption, from 12:01 a.m. Eastern time on July 24, 2026, with product exemptions and a short in-transit exception. They concern the investigated economies’ forced-labor import policies—not an epoxy-specific finding. (Federal Register notice)

Importantly, the July action coincided with the expiration of the temporary 10% Section 122 tariff. Do not assume every July shipment acquired another 10%–12.5% on top of that expired charge. Compare the duties actually applicable to the old and new entries. (CRS tariff fact sheet, current through September 30, 2026)

Origin changes the duty calculation

The table shows the July Section 301 rule before exemptions, alongside the outcome of the 2025 epoxy trade case. It is not a total landed-duty quote.

Resin origin	July 2026 forced-labor Section 301 rule	2025 epoxy case outcome
China	Additional 12.5%	AD/CVD investigations terminated
India	Additional 10%	AD/CVD investigations terminated
South Korea	12.5% net of MFN duty	AD and CVD orders issued
Taiwan	10% net of MFN duty	AD and CVD orders issued
Thailand	Additional 12.5%	AD order issued

Sources: Section 301 rates and exemptions, Commerce AD orders, Commerce CVD orders, USITC termination findings.

“Net of MFN” is not a full extra 10% or 12.5%. For Taiwan, if the product’s most-favored-nation duty is below 10%, the new charge brings MFN plus this Section 301 duty to 10%. If MFN is already at least 10%, this Section 301 charge is zero. That calculation does not cap AD/CVD or all other charges; the notice explicitly preserves those obligations. (Notice)

For example, HTS 3907.30.00, epoxide resins, has a published general duty of 6.1%. For a non-exempt Taiwan entry using that general rate, the July charge would be 3.9 percentage points, producing 10% for those two layers—not 16.1%. Special tariff treatment and other applicable duties still require separate checks. (USITC tariff schedule)

An exemption also needs its qualifying conditions checked. The July notice lists 3907.30.00 among provisions eligible for the pharmaceutical-use exemption; that listing does not exempt ordinary bonding or casting resin merely because it shares the code. (Official notice, pharmaceutical exemption)

China and India’s investigations ended because imports were found negligible. That outcome is not a declaration that their resin is tariff-free, nor does it identify the cheapest supplier after all costs. (USITC determination)

A two-part kit is not automatically outside the orders

The epoxy orders cover qualifying resin supplied in systems or kits with separately packaged hardeners. Separately packaged co-reactants that would not be covered on their own are outside the scope. Certain paint/coating formulations and prepregs are excluded, but those exclusions have specific definitions. “Finished kit” or “coating” alone is not enough to establish an exclusion. The written scope—not just an HTS number—controls coverage. (Order scope)

How to check a supplier’s price increase

For a domestic purchase, request an old-versus-new quote for the same product code (SKU), pack size and delivery terms. Separate the base price, tariff surcharge, freight and tax. Ask when the increase starts and how long the quote remains valid.

For direct imports, ask your customs broker to confirm:

• The exact product classification, origin and producer/exporter.
• Whether the resin falls within an AD/CVD order and the applicable cash-deposit rates.
• Which July Section 301 provision applies and whether an exemption is available.
• Who pays duties, brokerage and delivery charges under the quoted terms.

AD/CVD cash deposits are estimated duties, not necessarily the final assessed amount. Do not treat a supplier’s combined percentage as a guaranteed final cost. (Commerce deposit and assessment provisions)

For job estimates, apply a confirmed supplier increase to the epoxy material line, not the entire job. As an arithmetic example, a 12% increase on $500 of epoxy adds $60 to material cost. Calculate changes to labor and other materials separately; the resin increase alone does not make the whole job 12% more expensive.

If comparing replacements, first match the substrates, gap, load, moisture and service temperature. Then compare the documented preparation, working time and cure schedule. For fabrication and installation work, use the stone adhesive selection guide before changing chemistry solely to reduce the purchase price.