Effective Duty Rate
0% KORUS FTA for most machinery
Estimate — verify by HTS code
Compliance Risk
Low
Relative to other import corridors
Regulatory Agencies
CBP, EPA, OSHA
Primary oversight bodies
OVERVIEW
Importing Industrial Machinery & Mechanical Equipment from South Korea
Machinery imported from South Korea to the United States is subject to CBP entry requirements, applicable HTS-based duty rates, and agency compliance clearances. This guide covers the complete import process for 2026.
⚠ Key Trade Intelligence — South Korea Origin
KORUS FTA provides duty-free access for Korean machinery. South Korea exports semiconductor manufacturing equipment, shipbuilding machinery, and industrial automation systems. Strong quality compliance culture.
APPLICABLE HTS CODES
HTS Codes for Machinery Imports
The following Harmonized Tariff Schedule (HTS) codes typically apply to machinery imports. Exact classification depends on the specific product — misclassification is one of the most common CBP compliance errors.
| HTS Code |
Product Description |
MFN Base Duty Rate |
| 8428 |
Lifting & Handling Machinery (conveyors, hoists, elevators) |
0%–2.4% MFN |
| 8429 |
Bulldozers, Excavators & Earth-Moving Machinery |
0% MFN (ITA) |
| 8431 |
Parts for Machinery of Headings 8425–8430 |
0%–2% MFN |
| 8479 |
Machines with Individual Functions (not elsewhere specified) |
0%–3.2% MFN |
| 8481 |
Taps, Valves & Similar Fittings for Pipes |
0%–5% MFN |
MFN rates reflect base tariff. Additional duties (Section 301, Section 232, AD/CVD) may apply on top of MFN rates. Use the AI classifier to get the exact 10-digit HTS code and all applicable rates for your specific product.
DUTY STACK — SOUTH KOREA ORIGIN
Total Tariff Cost for South Korea-Origin Machinery
| Duty Layer |
Rate / Status |
Applies To |
| MFN Base Rate |
Varies by HTS code |
All South Korea-origin goods (baseline) |
| KORUS Preferential Rate |
Reduced / 0% (qualifying goods) |
Goods meeting KORUS rules of origin |
| Section 301 |
Not applicable |
South Korea-origin goods are not subject to Section 301 |
| Section 232 TRQ |
0% within quota; 25%/10% above |
Steel/aluminum within agreed quota volumes |
COMPLIANCE — CBP / EPA / OSHA
US Compliance Requirements for Machinery Imports
Regardless of origin country, machinery imports must satisfy the following US regulatory requirements before or at the time of CBP entry filing:
- EPA emission standards for diesel-powered machinery and engines (40 CFR Parts 86, 89) — Tier 4 Final emission certification required for non-road diesel engines
- OSHA machinery safety standards — lockout/tagout compliance (29 CFR 1910.147), machine guarding requirements for industrial equipment sold for US workplace use
- DOT hazmat shipping compliance for machinery containing hydraulic fluids, fuel systems, or pressurized components during transit
- UL/CSA/NRTL electrical safety listing required for electrically powered machinery sold in the US market
Compliance Check Tool
Run an automated compliance check for your machinery import — identifies all applicable agency requirements, flagging issues before your shipment departs South Korea.
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REQUIRED DOCUMENTS
Documentation Checklist for Machinery from South Korea
Prepare all documents before the shipment departs South Korea. Missing or incorrect documents are the #1 cause of CBP holds and customs delays.
1
Commercial Invoice with complete machine description and HTS classification
2
Packing List with weights and dimensions
3
Bill of Lading or Airway Bill
4
EPA Nonroad Engine Compliance Certificate (for diesel/gas-powered equipment)
5
Country of Origin Declaration
6
Safety compliance documentation (UL/CSA listing, CE marking for reference)
ESTIMATED TIMELINE
Import Timeline — Machinery from South Korea
20–40 days (ocean freight for heavy machinery); 5–12 days (air for components)
Supplier Preparation
Allow 1–2 weeks for production documentation, certificates, and packing lists
Transit Time
18–35 days ocean from Asia/origin
CBP Clearance
1–3 days standard; 5–15 days if examination or AD/CVD review required
FREQUENTLY ASKED QUESTIONS
FAQs — Importing Machinery from South Korea
What is the effective US tariff rate for importing machinery from South Korea?
The effective US tariff rate for machinery from South Korea is: 0% KORUS FTA for most machinery. KORUS FTA provides duty-free access for Korean machinery. South Korea exports semiconductor manufacturing equipment, shipbuilding machinery, and industrial automation systems. Strong quality compliance culture.
What compliance agencies regulate machinery imports from South Korea?
Machinery imports require compliance with: CBP, EPA, OSHA. Specific requirements include: EPA emission standards for diesel-powered machinery and engines (40 CFR Parts 86, 89) — Tier 4 Final emission certification required for non-road diesel engines and OSHA machinery safety standards — lockout/tagout compliance (29 CFR 1910.147), machine guarding requirements for industrial equipment sold for US workplace use.
What documents are required to import machinery from South Korea?
Required documents include: Commercial Invoice with complete machine description and HTS classification; Packing List with weights and dimensions; Bill of Lading or Airway Bill; EPA Nonroad Engine Compliance Certificate (for diesel/gas-powered equipment). Additional: Country of Origin Declaration; Safety compliance documentation (UL/CSA listing, CE marking for reference). Ensure all documents are prepared before the shipment departs South Korea.
How long does customs clearance take for machinery from South Korea?
Typical timeline: 20–40 days (ocean freight for heavy machinery); 5–12 days (air for components). CBP clearance typically takes 1–3 business days for compliant entries. Complex entries (AD/CVD, formal entry review, or examination) may require 5–15 additional business days.
Are there Section 301 or Section 232 tariffs on machinery from South Korea?
No Section 301 tariffs apply to South Korea-origin goods. Section 232 applies with a TRQ arrangement — steel within quota enters at reduced/zero Section 232; above quota faces 25%.
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RELATED IMPORT GUIDES
Also Importing Machinery From Other Countries?
Other Products from South Korea?
Import duty rates are sourced from the USITC Harmonized Tariff Schedule and USTR Section 301 lists. Rates reflect current published schedules as of 2026-04-06 and are subject to change. This page is for informational purposes only and does not constitute legal or customs brokerage advice. Verify rates with a licensed customs broker before importing.