U.S. imports of chalk (HS 250900) totaled $89K in August 2026, imported from 12 countries.
Importers of Chalk paid $17K in duties in August 2026, an effective tariff rate of 19.25% of the $89K imported — duty actually collected as a share of that value, not the published tariff schedule. Chalk imports of $89K in August 2026 ran 21% below the year-to-date monthly average of $112K.
Last updated: August 2026 dataChalk — a soft, fine-grained calcium carbonate of marine biogenic origin — enters US commerce under two distinct tariff lines: crude chalk (2509001000) and processed or refined chalk (2509002000), a split that reflects the degree of beneficiation and affects applicable duty rates. Refined chalk finds wide application in paints, coatings, plastics, rubber compounding, and agricultural lime, while crude material is used in lower-value industrial and agricultural contexts. Importers should note that the crude/non-crude distinction hinges on processing history and physical form, which CBP may scrutinize when the product sits near the boundary between the two lines.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
23 shipments/mo
CBP generally considers chalk 'crude' if it has undergone no processing beyond extraction and basic sizing — such as quarrying and rough crushing. Chalk that has been ground, washed, dried, or otherwise beneficiated to meet specific particle-size or brightness specifications is typically classified as 'except crude' under 2509002000.
Refined chalk is consumed primarily by the paints and coatings, plastics, rubber, and paper industries as a functional filler and extender. Agricultural applications (soil amendment and pH adjustment) use cruder grades, while specialty grades serve the cosmetics and pharmaceutical sectors as a calcium carbonate source.
HSChapter 25
Subheading 1 of 1 in heading 2509
Subheading 250900 · $89K of $89K
Trade Directory
List your company under HS 250900 — Chalk, so the companies trading it can find you. Be the first supplier listed.
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 |
|---|---|---|---|---|---|
| 2509002000 | Chalk, Except Crude | $85K | 18.52% | 54.73% | $16K |
| 2509001000 | Chalk, Crude | $3K | 37.51% | 100.00% | $1K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2509000000 | Chalk | $100K |
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.
ImportsExports
Imports
$89KYoY · free account
Exports
$100KYoY · free account
12-mo low · imports
YoY · free accountOver the twelve months to August 2026, the U.S. imported $1.4M of Chalk.
Fewer than 6 of the last 12 months reported trade above $500K; the trend chart is not shown for thin series.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
China and Vietnam together supply 79% of it. Brazil pays 37.5% duty; Canada 0.0%.
customs district
destination
entry
rate provision · imports
7.8% enters free of duty; duty collected equals 19.25% of total import value.