The 50% Quartz Tariff Coming for Your Countertops: What Importers Need to Know

The ITC just voted that surging quartz imports are seriously injuring American manufacturers — and the president could impose safeguard tariffs of up to 50% on countertops, tiles, and vanity tops from virtually every country on earth. If you import quartz surface products, your pricing model is about to get stress-tested.

On April 1, 2026, the U.S. International Trade Commission dropped a decision that sent shockwaves through the stone and surfaces industry. In a 2-1 vote, the Commission determined that quartz surface products are being imported in such increased quantities that they constitute a "substantial cause of serious injury" to the domestic industry.

That phrase — "serious injury" — isn't bureaucratic filler. It's the legal trigger for a Section 201 global safeguard action, one of the most powerful trade tools in the U.S. arsenal. Unlike antidumping duties that target a single country, Section 201 tariffs apply to imports from everywhere. India, Vietnam, Malaysia, Turkey, Thailand — nobody gets a pass (with one notable exception we'll get to).

The petitioner, the Quartz Manufacturing Alliance of America — led by Cambria, Guidoni USA, and LX Hausys America — asked for remedies including a 50% ad valorem tariff on all quartz surface product imports. The president has until mid-2026 to decide. If you're an importer, fabricator, or broker handling quartz, the clock is ticking.

What Are Quartz Surface Products — and What's Covered?

Let's be precise about what's in scope. Quartz surface products (QSP) are engineered stone slabs made from a mixture of predominantly silica materials — quartz, quartz powder, cristobalite, or glass powder — bound together with a resin binder like unsaturated polyester.

These aren't raw quartz crystals. They're the finished and semi-finished slabs used for:

• Countertops and kitchen islands
• Bathroom vanity tops
• Backsplashes and bar tops
• Flooring and wall facing
• Shower and fireplace surrounds
• Tiles and work surfaces

The investigation covers products classified under three HTS subheadings:

If you're importing anything that fits this product description under these codes, you're in the crosshairs.

Why This Investigation Exists: The 90% Import Problem

Foreign quartz surface products currently represent approximately 90% of the U.S. market. That statistic alone tells the story — domestic manufacturers are being overwhelmed.

The Quartz Manufacturing Alliance filed its Global Safeguard petition in September 2025, arguing that a flood of imports was destroying American manufacturing capacity. Cambria CEO Marty Davis, Guidoni USA's Daniel Vaz De Melo Sa, and LX Hausys America VP Michael Morici made the case that imports "don't just put slab manufacturers at risk, they also steal business from downstream American fabricators." The domestic quartz manufacturing industry, they argued, supports over 100,000 American jobs.

The ITC agreed. Chair Amy A. Karpel and Commissioner Jason E. Kearns voted affirmatively; Commissioner David S. Johanson dissented. The Commission even designated the investigation as "extraordinarily complicated" — a formal finding that extended their timeline.

Section 201 vs. Antidumping: Why This Is Different

If you're thinking, "Wait, don't we already have massive duties on Chinese quartz?" — you're right. The U.S. has maintained antidumping and countervailing duty orders on quartz surface products from China since July 2019, with combined duty rates ranging from 242% to 526% depending on the exporter.

Those duties effectively shut Chinese quartz out of the U.S. market through the front door. But here's the problem Section 201 addresses: when one country's exports get blocked by AD/CVD orders, production simply shifts to other countries. This pattern — sometimes called "trade diversion" — is exactly what happened with quartz.

After the China duties took effect, imports surged from India, Vietnam, Malaysia, and Thailand. CBP has even caught importers transshipping Chinese quartz through Malaysia and Vietnam to dodge the duties — 15 importers were found evading in one sweep alone, with some misclassifying merchandise as "crushed glass products" or "aluminum hydroxide surface products" to avoid detection.

Section 201 is designed to close this whack-a-mole problem. It doesn't care where the quartz comes from — it applies globally.

The Remedies on the Table: What Could Actually Happen

The Quartz Manufacturing Alliance requested three possible remedies from the ITC:

1. A country-specific quota system limiting import volumes from each source country
2. A 50% ad valorem tariff on all quartz surface product imports
3. A specific tariff applied per weight at an appropriate rate

The ITC will hold a public hearing on remedies on April 14, 2026 — just days away. After hearing from both sides, the Commission must submit its remedy recommendations to the president by May 18, 2026.

Here's what matters: the president makes the final call. Under Section 203 of the Trade Act of 1974, the president can:

• Accept the ITC's recommendation
• Modify it (higher or lower tariffs, different structure)
• Reject it entirely (though this is rare after an affirmative injury finding)
• Impose a combination of tariffs, quotas, and tariff-rate quotas

Based on recent Section 201 history, the president typically acts within 60 days of receiving the ITC report, putting a potential effective date somewhere in July or August 2026.

The USMCA Exception: Canada and Mexico Get a Pass

One critical detail that importers should note: the ITC specifically found that imports from Canada and Mexico do not account for a substantial share of total imports and do not contribute importantly to the serious injury.

This means USMCA partners are likely to be excluded from any safeguard tariff, just as they were partially excluded from the 2018 Section 201 tariffs on solar panels and washing machines. If you source quartz from Canadian or Mexican manufacturers, your supply chain may be unaffected — though you should watch the final presidential proclamation closely for the exact terms.

Other FTA partners were also individually evaluated. The Commission found that imports from each individual FTA partner country are not a substantial cause of serious injury, which could mean additional exclusions for countries like Korea, Australia, Colombia, Chile, and Singapore.

Lessons from Past Section 201 Actions

Section 201 safeguard tariffs are rare — this is only the sixth significant case in decades. The most recent precedents are instructive:

The solar and washing machine cases show that Section 201 tariffs do reshape industries. Samsung and LG both built U.S. washing machine plants in response to the 2018 tariffs. But they also raised consumer prices — washing machine prices jumped about 12% in the first year.

For quartz, a 50% tariff would likely trigger a similar dynamic: higher prices for consumers, potential investment in domestic production, and a scramble among importers to restructure supply chains.

What Importers and Brokers Should Do Right Now

The remedy hearing is April 14, 2026 — four days from now. The presidential decision could come by midsummer. Here's your action plan:

1. Audit your quartz classifications immediately — Confirm that every entry under HTS 6810.99.0020, 6810.99.0040, and 7020.00.6000 is correctly classified. Misclassification in this product space has already triggered major CBP enforcement actions, and scrutiny will only increase.

2. Model the financial impact of a 25%-50% tariff — Run scenarios on your landed cost for quartz surface products. If your margins can't absorb a 50% duty, you need to know that before the proclamation, not after.

3. Evaluate your sourcing geography — If you're importing from India, Vietnam, Malaysia, or Thailand, those sources will be hit. If you have Canadian or Mexican suppliers — or can develop them — those channels may remain duty-free.

4. Check your FTA eligibility — Products from FTA partner countries may be excluded. Review whether your supply chain qualifies under USMCA, KORUS, or other agreements. This is where preferential treatment claims become genuinely valuable.

5. Consider accelerating shipments — If the tariff takes effect in mid-2026, goods already in transit or entered before the effective date may avoid the new duties. Work with your broker to understand the timing.

6. Watch the April 14 hearing and May 18 report — The ITC's remedy recommendation will telegraph what the president is likely to do. Subscribe to ITC updates or monitor trade publications for real-time coverage.

7. Document everything for potential exclusion requests — Past Section 201 actions have included product-specific exclusion processes. Maintain detailed records of your product specifications, sourcing, and the absence of domestic alternatives.

What's Coming Next

The immediate timeline is clear:

• April 14, 2026 — ITC public hearing on remedy recommendations
• May 18, 2026 — ITC submits remedy report to the president
• Mid-2026 (est.) — Presidential proclamation on final remedy
• Within 15 days of proclamation — Tariff takes effect

Beyond the tariff itself, watch for secondary effects. CBP enforcement on quartz misclassification and transshipment is already aggressive — the agency has caught importers routing Chinese quartz through Southeast Asia and relabeling it, with duties evaded reaching up to 526%. A new global safeguard tariff will add another layer of compliance complexity and give CBP even more reason to scrutinize quartz entries.

The WTO dimension matters too. Under WTO rules, safeguard measures must be temporary (typically 4-8 years), include a phase-down schedule, and allow affected exporting countries to seek compensation or retaliate. The U.S. steel safeguard of 2002 was withdrawn after just 21 months following a WTO ruling — a reminder that these tariffs don't always stick.

The Bottom Line

The quartz surface products investigation is the biggest Section 201 case since solar panels and washing machines in 2018. With foreign products holding 90% of the U.S. market and the ITC's affirmative injury finding already in hand, some form of safeguard tariff is highly likely.

For importers and brokers, the worst strategy is waiting to see what happens. The companies that model their exposure now, diversify their sourcing, and tighten their classification compliance will be the ones that navigate this smoothly — whether the final tariff lands at 25% or 50%.

TariffLens can help you audit your quartz surface product classifications and model tariff scenarios across your portfolio, so you're not scrambling when the proclamation drops.

This article is for informational purposes only and does not constitute legal, tax, or customs advice. Consult a licensed customs broker or trade attorney for guidance specific to your situation.