Machinery from South Korea — KORUS 0% Duty (2026)

USTradeStack

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

Importing machinery from South Korea into the United States carries low compliance risk, with an effective duty rate of 0% KORUS FTA for most machinery. A Section 232 Tariff Rate Quota (TRQ) arrangement applies: steel and aluminum products within quota limits may enter at reduced or zero Section 232 duty, while above-quota imports face the full 25% surcharge.

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.

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SAMPLE LANDED COST — $50,000 SHIPMENT

Estimated Landed Cost: Machinery from South Korea

Based on a representative $50,000 CIF shipment value. Actual costs vary by HTS code, entry type, and port of entry.

Cost Component	Amount	Notes
Cargo Value (CIF)	$50,000.00	Reference shipment value
MFN Base Duty (0.0%)	$0.00	KORUS preferential / ITA zero-rate
Merchandise Processing Fee (0.3464%)	$173.20	Min $31.67 / max $614.35
Harbor Maintenance Fee (0.125%)	$62.50	Ocean freight only
Total Duties & Fees	$235.70	Effective rate: 0.5%
Estimated Landed Cost	$50,235.70	Cargo + all US duties/fees

⚠ Section 232 tariffs (25% steel / 10% aluminum) may apply to machinery sub-categories with significant steel or aluminum content. Not included above — verify by specific HTS code.

✓ KORUS preferential rates reduce base duty to 0% for qualifying goods. MPF and HMF still apply on all entries.

Excludes freight, insurance, broker fees, warehousing, and AD/CVD duties. Use the Duty Calculator for a precise estimate on your specific shipment.

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

Precise Duty Calculation

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Our calculator handles all duty layers — MFN + Section 301 + Section 232 + FTA rates — for any HTS code from any origin country.

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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)

Document Generator

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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%.

What HTS codes and duty rates apply to industrial machinery imports?

Industrial machinery is classified primarily under HTS Chapter 84 (nuclear reactors, boilers, machinery). Key rates: CNC machine tools (HTS 8457–8462) 2.9%–4.4% MFN; pumps and compressors (8413–8414) 0%–4.4%; construction equipment (8429–8430) 0%–2.5%; food processing machinery (8438) 0%–3.5%; printing machinery (8443) 0%. Most industrial machinery faces relatively low MFN rates (0%–4.4%). China-origin machinery adds 25% Section 301 on top of the base rate for most categories on USTR Lists 3 and 4A.

Does Section 301 apply to machinery imported from China?

Yes. Most industrial machinery from China falls on USTR Section 301 Lists 3 or 4A, carrying a 25% additional duty on top of the MFN base rate. This means a CNC machining center at 4.4% MFN faces an effective 29.4% duty from China. Some capital equipment received USTR exclusions, but most exclusions have expired. Check the USTR Section 301 exclusion database by specific 10-digit HTS code — a small number of precision machinery categories retain active exclusions.

What OSHA, EPA, and safety certification requirements apply to imported industrial machinery?

Industrial machinery imported for use in US workplaces must comply with applicable OSHA standards under 29 CFR Parts 1910–1926. Machines with electrical components require UL, ETL, or CSA listing for 120/240V US power systems — CE marking (EU) does not satisfy US requirements. Pressure vessels and boilers require ASME code compliance and state-level boiler safety certifications. Machinery emitting RF energy requires FCC authorization. EPA governs diesel engines (Tier 4 emissions standards) for off-road equipment. Obtain full US-specific compliance documentation from the manufacturer before importation.

What does the KORUS FTA cover and how do I claim preferential treatment?

The US-Korea Free Trade Agreement (KORUS, effective 2012) has phased out duties on the vast majority of US-Korea trade — most goods now enter at 0%. To claim KORUS preference, have a valid origin certification from the Korean exporter (self-certification is permitted under KORUS). Goods must meet KORUS rules of origin requiring sufficient production in the US or Korea, with country-specific RVC or tariff shift rules by HTS code.

Are Korean electronics (Samsung, LG, SK Hynix) subject to any additional US tariffs?

No. South Korea is not subject to Section 301 tariffs. Section 232 TRQ applies to Korean steel and aluminum, not electronics. Korean electronics benefit from both KORUS FTA (0%) and the ITA (0% WTO multilateral rate), providing dual zero-rating. Major Korean brands have extensive US operations that further simplify compliance for distributors and importers.

How strictly does CBP enforce KORUS rules of origin for auto parts?

CBP has significantly increased KORUS auto parts origin verification, particularly for vehicles and major components. Importers should obtain detailed origin certifications from Korean suppliers including net cost calculations and production records. Korean auto parts manufacturers supplying global OEMs typically maintain robust KORUS documentation — request it proactively rather than waiting for a CBP CF-28 inquiry.

TRADE INTELLIGENCE TOOLS

Free Tools for Machinery Importers

Run these tools before your next shipment from South Korea — all free, no account required.

🔍 AI HTS Classifier

Get the exact 10-digit HTS code for your machinery. Identifies Section 301/232 exposure.

🧮 Landed Cost Calculator

Calculate total duty including MFN + Section 301 + Section 232 for South Korea-origin goods.

🛡️ Supplier Screening

Screen your South Korea supplier against OFAC, BIS Entity List, and denied parties databases.

✅ Compliance Check

Verify CBP/EPA/OSHA requirements and identify documentation gaps before shipment.

📊 Trade Research Hub

Deep-dive on tariff policy changes, Federal Register notices, and regulatory updates for South Korea.

🔔 Tariff Alerts

Get notified when duty rates or compliance requirements change for your product corridors.

Ready to Calculate Your Exact Import Costs?

Get precise duty calculations, landed cost estimates, and compliance flags for your machinery shipment from South Korea.

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View full South Korea tariff profile → Browse all import guides → Calculate landed cost →

Import duty rates are sourced from the USITC Harmonized Tariff Schedule and USTR Section 301 lists. Rates reflect current published schedules as of 2026-05-16 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.

How to Import Machinery from South Korea to the US