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HSChapter 10
U.S. exports of certified corn (maize) seed, excluding sweet corn (HS 100510) totaled $10.4M in July 2026.
Importers of Certified Corn (Maize) Seed, Excluding Sweet Corn paid $50K in duties in July 2026 — an effective duty rate of 10% on $496K in dutiable value, based on actual customs collections rather than the published tariff schedule. Certified Corn (Maize) Seed, Excluding Sweet Corn imports of $564K in July 2026 ran 92% below the year-to-date monthly average of $6.7M.
Last updated: July 2026 dataCertified seed corn — divided between yellow corn seed (1005100010) and other varieties (1005100090) — is a high-value agricultural input subject to USDA APHIS phytosanitary controls and, in many cases, plant variety protection or patent restrictions that govern how seed may be replanted or resold. Chile leads US import supply, followed by Canada and France, a pattern driven by counter-seasonal seed multiplication in the Southern Hemisphere and European hybrid development programs. Importers should confirm that seed lots carry both phytosanitary certification and any required variety licensing documentation.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
15 shipments/mo
Subheading 2 of 2 in heading 1005
Subheading 100510 · $564K of $28.0M
Chile's Southern Hemisphere growing season allows seed companies to multiply hybrid corn seed during the Northern Hemisphere's off-season, enabling US seed producers to accelerate variety development cycles and maintain year-round supply. This counter-seasonal multiplication model makes Chile a structurally important source regardless of its domestic corn production scale.
Certified corn seed imports require a phytosanitary certificate from the exporting country and are subject to USDA APHIS inspection at the port of entry. Additionally, seed lots protected by plant variety protection certificates or utility patents may require licensing agreements with the variety owner before importation or sale. Consult a licensed customs broker or APHIS for current admissibility requirements.
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ImportsExports
Imports
$564KYoY · Pro
Exports
$10.4MYoY · 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 |
|---|---|---|---|---|---|
| 1005100010 | Yellow Corn (Maize), Seed | $464K | 9.16% | 91.58% | $42K |
| 1005100090 | Corn (Maize) Seed, Other Than Yellow Corn | $100K | 7.03% | 70.34% | $7K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 1005100010 | Yellow Corn (Maize), Seed | $8.0M |
| 1005100090 | Corn (Maize) Seed, Other Than Yellow Corn | $2.4M |
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.
Exports · July 2026
destination
Pakistan and South Africa together take 82% of it.
customs district
origin
entry
rate provision · imports
12.2% enters free of duty; the effective duty rate is 8.78%.