Short summary: President Trump’s new Section 201 safeguard measure establishes a four-year tariff-rate quota (TRQ) on imports of quartz surface products beginning August 15, 2026. While annual quota volumes gradually increase over the life of the measure, importers may face safeguard duties of up to 50% once quarterly quota allocations are exhausted, making careful planning essential.  

On July 31, 2026, President Trump issued a proclamation imposing a Section 201 safeguard measure on imports of quartz surface products (QSP). The measure takes the form of a four-year tariff-rate quota (TRQ) and applies to goods entered, or withdrawn from warehouse for consumption, on or after 12:01 a.m. Eastern Time on Saturday, August 15, 2026.   

If you import QSP, including countertops, backsplashes, vanity tops, bar tops, work tops, tabletops, flooring, wall facing, shower surrounds, fireplace surrounds, mantels, and tiles, this measure will likely affect your imports.  

How the Tariff-Rate Quota Works

A TRQ is not a flat tariff. A set volume of covered merchandise may enter each quota year at a lower in-quota rate under the new HTSUS heading 9903.45.30. Once that volume is exhausted, additional entries pay a substantially higher over-quota rate under new heading 9903.45.31.

The annual volume is divided into four equal quarterly tranches. Any unused portion of a quarterly tranche carries forward into the following quarter, and CBP is required to add the unused quantity to the next quarter’s total no later than 14 days after the prior quarter […]