Calculate Import Duty: Japan to USA

Japan is the United States' fourth-largest goods trading partner. Japanese exports to the US are dominated by vehicles (cars, trucks, parts), industrial machinery, electronics, and specialty chemicals. The duty calculation in 2026 stacks MFN HTS plus 15 percent Section 122. The US-Japan Trade Agreement (USJTA) covers a narrow set of categories (mainly agricultural) and does not deliver broad tariff savings for Japanese exporters.

This guide walks through the calculation, the USJTA carve-outs, and worked examples. The calculator handles the full stack.

The duty layers for Japan to USA

For a typical Japan to USA entry in 2026:

1. MFN HTS rate.
2. USJTA preferential rate for the small number of in-scope categories.
3. Section 122 reciprocal tariff of 15 percent.
4. Section 232 at 25 percent on steel and aluminum (Japan-specific TRQ arrangement; verify quarterly fill).
5. MPF and HMF.
6. No Section 301 (Japan is not in scope).

US-Japan Trade Agreement: limited scope

USJTA entered into force on 1 January 2020 as a partial agreement. It covers:

• Certain agricultural products from US to Japan (beef, pork, wheat, dairy, wine).
• Limited Japanese agricultural exports to the US (some perishables).
• A small list of industrial categories (typically already at low MFN).
• A digital trade chapter covering data flows, source code, e-commerce.

What it does not cover:

• Japanese automobiles and auto parts (the big category).
• Most consumer goods.
• Steel and aluminum (separately handled under Section 232).
• Apparel and footwear.

For Japan-to-USA importers, USJTA rarely changes the duty bottom line. The standard MFN plus 15 percent Section 122 stack is the realistic baseline.

Worked example: 2,000,000 USD of Japanese passenger cars

A Japanese OEM ships 50 luxury sedans to a US dealer network. Total invoice 2,000,000 USD FOB Yokohama, 60,000 USD ocean freight to Long Beach, 8,500 USD insurance. HTS 8703.23.00 (passenger cars 1500-3000cc), MFN 2.5 percent.

Landed cost before broker and trucking: 2,000,000 + 60,000 + 8,500 + 353,114.35 = 2,421,614.35 USD. The effective duty rate jumped from 2.5 percent to 17.6 percent.

Try this with your own values in the calculator.

High-traffic HS chapters for Japan to USA

Chapter 87: vehicles and parts

The dominant category. Passenger cars 2.5 percent MFN, light trucks/SUVs in the same range. The "chicken tax" on pickups (HTS 8704.21, 8704.31) is 25 percent MFN. Plus 15 percent Section 122 across the board.

Japanese auto parts (HTS 8708) for OEM and aftermarket carry MFN typically 2.5 percent. Section 122 adds 15 percent.

Chapter 84 and 85: machinery and electronics

Industrial robots, machine tools, semiconductor manufacturing equipment, optical instruments. MFN typically 0 to 3 percent. Section 122 adds 15 percent.

Semiconductors (HTS 8541, 8542) under the WTO ITA are 0 percent MFN. Section 122 status: many semiconductor lines exempted under the 2026 proclamation's tech carve-out.

Chapter 90: precision instruments

Cameras, optical fibers, scientific instruments. MFN 0 to 3.5 percent. Section 122 applies.

Chapter 39, 40: plastics and rubber

Japanese specialty polymers and rubber compounds. MFN typically 4 to 6.5 percent. Section 122 adds 15 percent.

Section 232 and the Japan TRQ

Japan negotiated a steel TRQ in 2022 that allowed 1.25 million metric tons annually to enter the US duty-free, with melt-and-pour origin requirements. The aluminum equivalent allows 460,000 metric tons annually.

Within the quota: 0 percent Section 232. Over the quota: 25 percent. The quota allocation runs by quarter and category.

The 2025 melt-and-pour rule applies. Japanese-finished steel articles must have Japanese (or other approved-country) melt source documented via mill test reports.

AD/CVD orders on Japanese goods

Active US AD/CVD orders targeting Japanese exports are relatively few. Notable examples:

• Carbon and certain alloy steel wire rod (terminated 2018, no active order)
• Certain stainless steel sheet and strip (terminated)
• Diffusion-annealed nickel plated flat-rolled steel (terminated)
• Sodium hexametaphosphate (active for some Japanese producers)

The Commerce orders list at https://access.trade.gov is the authoritative source. Most Japanese exporters are not currently subject to AD/CVD.

Country of origin: substantial transformation

Standard substantial transformation test applies. Japanese-finished goods using Japanese components and labor clearly qualify as Japanese origin. Imported Chinese components further processed in Japan into a new article also qualify, with the analysis turning on the nature and extent of processing.

Note: many Japanese OEMs have moved production to lower-cost Southeast Asian countries (Thailand, Indonesia, Vietnam). A "Japanese brand" car may actually be of Thai or Indonesian origin for tariff purposes. Verify on the manufacturer's certificate of origin, not the brand badge.

Customs procedures

Standard US import procedures apply. ISF-10 filing 24 hours before vessel loading. Commercial invoice, packing list, BoL/AWB. CBP entry within 15 days of arrival or use of cargo release at port.

For automotive imports, additional EPA and DOT compliance documents are required:

• EPA 3520-1 (vehicle/engine import certification)
• DOT HS-7 (safety certification)
• Manufacturer's statement of origin (MSO)

Worked example: 600,000 USD of Japanese precision instruments

A Japanese maker of semiconductor metrology equipment ships 600,000 USD of inspection tools to a US fab. Total invoice 600,000 USD CIF Long Beach (air freight 15,000, insurance 2,000). HTS 9031.41 (instruments for inspection of semiconductor wafers). MFN 0 percent under WTO ITA. Semiconductor manufacturing equipment is on the Section 122 exemption list.

Japanese semiconductor manufacturing equipment, similar to Taiwanese semiconductors, enters the US essentially duty-free thanks to the March 2026 exemption.

USJTA implications and the 2025 critical minerals understanding

In May 2025 the US and Japan concluded a critical minerals understanding outside the USJTA framework. The understanding facilitates Japanese supplier qualification for the US Inflation Reduction Act EV tax credit on battery materials sourced through Japan. It does not change tariff rates but matters for downstream consumer eligibility.

Japan-USJTA tariff savings are limited; the agreement covered a narrow band of agricultural and digital trade. For the typical industrial importer from Japan, the calculation is MFN HTS plus 15 percent Section 122 (with exemptions noted), not USJTA.

How the calculator handles this lane

When you select Origin: Japan and Destination: USA in the calculator:

1. Looks up MFN HTS rate.
2. Applies USJTA preferential rate if the HTS is covered.
3. Applies 15 percent Section 122 unless exempt.
4. Checks chapter 72, 73, 76 for Section 232 with Japan TRQ availability.
5. Applies anti-stacking 232 vs 122.
6. Adds MPF and HMF.

Related guides

• Calculate Import Duty: Germany to USA
• Calculate Import Duty: South Korea to USA
• What is Section 122? The 2026 Reciprocal Tariff Explained
• Section 232 vs 301 vs 122: How US Tariffs Stack in 2026
• Steel HS Codes Under Section 232
• FTA Preferences: Saving 5-25% on Duty

Run a Japan-to-USA number in the calculator.