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HSChapter 84
U.S. imports of combine harvester-threshers (HS 843351) totaled $10.3M in June 2026, traded with 12 countries.
Importers of Combine Harvester-Threshers paid $1.2M in duties in June 2026 — an effective duty rate of 15% on $7.8M in dutiable value, based on actual customs collections rather than the published tariff schedule. Combine Harvester-Threshers imports of $10.3M in June 2026 ran 80% above the year-to-date monthly average of $5.8M.
Combines — machines that simultaneously reap, thresh, and clean grain crops in a single field pass — are split at the 10-digit level between self-propelled units (8433510010) and non-self-propelled (tractor-drawn) models (8433510090), with self-propelled combines representing the overwhelming majority of commercial trade. Belgium leads US imports under this heading, reflecting the global manufacturing footprint of major combine brands with European assembly operations, followed by Italy and Germany. Given the high unit values involved, importers should pay close attention to whether a machine is complete-as-imported or whether headers and other attachments are shipped separately, as that affects both classification and valuation.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Combine headers (cutting platforms) imported together with the combine as a complete unit are generally classified with the machine under 843351. Headers imported separately are typically classified as parts under heading 843390. The method of shipment and whether the header is invoiced as part of the machine or as a standalone item both influence the classification and valuation analysis.
A formal entry is required given the high unit values typical of self-propelled combines. Required documentation generally includes a commercial invoice with full machine specifications (model, serial number, engine output, and country of manufacture), a bill of lading, and packing list. If claiming USMCA or other preferential origin, a manufacturer's certification of origin is also needed. EPA engine emission compliance documentation may be required for the diesel engine.
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Monthly import values over time
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 |
|---|---|---|---|---|---|
| 8433510010 | COMBINE HARVESTER-THRESHERS, SELF-PROPELLED | $9.1M | 11.63% | 79.07% | $1.1M |
| 8433510090 | COMBINE HARVESTER-THRESHERS, EXCEPT SELF-PROPELLED | $1.3M | 11.41% | 52.17% | $143K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8433510010 | COMBINE HARVESTER-THRESHERS, SELF-PROPELLED | $155.5M |
| 8433510090 | COMBINE HARVESTER-THRESHERS, EXCEPT SELF-PROPELLED | $873K |
DIGITAL PROCESSING UNITS, N.E.S.O.I.
HS 847150
PARTS & ACCESSORIES FOR ADP MACHINES & UNITS
HS 847330
PORT DIGTL AUTOMATIC DATA PROCESS MACH NOT > 10 KG
HS 847130
AUTOMATIC DATA PROCESSING STORAGE UNITS, N.E.S.O.I
HS 847170
AUTOMATIC DATA PROCESSING UNITS, N.E.S.O.I.
HS 847180
TURBOJET AND TURBOPROLLER PARTS
HS 841191
| Port | Imports | Exports | Balance |
|---|---|---|---|
| BALTIMORE, MD | $6.4M | $46.1M | +$39.7M |
| PORTAL, ND | $206K | $43.8M | +$43.6M |
| PEMBINA, ND | $321K | $26.1M | +$25.7M |