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U.S. imports of gypsum & anhydrite (HS 252010) totaled $8.7M in July 2026, traded with 15 countries.
Importers of Gypsum & Anhydrite paid $254K in duties in July 2026 — an effective duty rate of 9.6% on $2.6M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataNatural gypsum (calcium sulfate dihydrate) and anhydrite (anhydrous calcium sulfate) are foundational minerals for the construction and building products industries, classified under tariff line 2520100000. Mexico is the leading US supplier, a position reinforced by large Baja California deposits and short overland and maritime shipping distances to US wallboard manufacturers. Canada and Spain are secondary sources. Importers should distinguish natural gypsum from synthetic gypsum (a byproduct of flue-gas desulfurization), as synthetic material may classify differently depending on its form and processing state.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
23 shipments/mo
Natural gypsum and anhydrite are minerals of geological origin and classify under 2520100000. Synthetic gypsum — produced as a byproduct of industrial processes such as flue-gas desulfurization or phosphoric acid production — is generally classified elsewhere (often in Chapter 28 or 38 depending on its form and purity). The origin of the calcium sulfate (geological versus industrial byproduct) is the key classification question, and a chemical analysis certificate can support the correct determination.
Wallboard (drywall) manufacturing is the dominant end use, consuming the largest share of imported gypsum. Cement production uses gypsum as a set-retarder additive. Agricultural applications include soil amendment to improve drainage and reduce sodium content. Anhydrite specifically is used in flooring screeds and as a binder in specialty construction products.
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Subheading 1 of 2 in heading 2520
Subheading 252010 · $8.7M of $13.3M
ImportsExports
Imports
$8.7MYoY · Pro
Exports
$1.2MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2520100000 | Gypsum; Anhydrite | $12.9M | 3.89% | 38.77% | $502K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2520100000 | Gypsum; Anhydrite | $832K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · July 2026
origin
Canada and Mexico together supply 70% of it.
customs district
destination
entry
rate provision · imports
69.6% enters free of duty; the effective duty rate is 2.93%.