Customs duty from Japan to United States: Import Duty Guide

Key Takeaways

• The 2020 US-Japan Trade Agreement (Phase 1) covers limited agricultural and industrial tariff lines - it isn’t a comprehensive free trade agreement.
• A July 2025 framework set a 15% baseline tariff, but that specific IEEPA-based layer should have fallen with the February 2026 Supreme Court ruling against IEEPA tariffs.
• As of the July 2026 Section 301 forced-labor program, Japan sits in a more favourable tier capping general-merchandise duty at roughly 12.5% - though whether this superseded the earlier 15% figure isn’t clearly resolved.
• Autos and auto parts face a separate 15% Section 232 tariff from the 2025 deal, unaffected by the IEEPA court rulings.
• Japan was the US’s 7th largest source of goods imports in 2025, at $145.84 billion.

Japan-US Trade at a Glance

Japan was the US’s seventh-largest source of goods imports in 2025, at $145.84 billion, with the US running a $64.45 billion goods trade deficit (US Census Bureau).

Is There a Trade Deal Between Japan and the US?

Partially. The 2020 US-Japan Trade Agreement (Phase 1) covers a limited set of agricultural and industrial tariff lines, alongside a separate Digital Trade Agreement - neither is a comprehensive FTA. A July 2025 US-Japan strategic trade and investment framework layered a 15% baseline reciprocal tariff on top (applying wherever the standard MFN rate was below 15%), plus 15% inclusive treatment for autos, retroactive to 7 August 2025 (BDO; Congressional Research Service, IN12608).

What Tariffs Apply Right Now (And Why That Keeps Changing)

The 2025 framework’s 15% baseline was built on IEEPA reciprocal-tariff authority, which the US Supreme Court ruled unconstitutional in February 2026 (see the China lane page for the full legal timeline) - that specific layer should no longer be collected. As of the Section 301 forced-labor program that replaced it from 24 July 2026, Japan sits in the program’s favourable “net-of-MFN” tier alongside South Korea, Taiwan, Switzerland, and the EU, capping general merchandise at roughly 12.5% combined with the standard MFN rate (Holland & Knight). Whether the original 15% headline figure from the 2025 deal still applies in practice on some goods, or has been fully superseded by this lower Section 301 ceiling, isn’t clearly resolved in currently available sources - this is a genuine open question worth checking against a live tariff lookup before relying on either number. Auto and auto-parts Section 232 tariffs from the 2025 deal are a separate legal mechanism, unaffected by the IEEPA court rulings, and likely remain at 15%.

How Much Will You Pay Importing from Japan to the US?

For general merchandise, expect somewhere in the range of 10-15%, with the exact figure genuinely unsettled pending clarification of how the Section 301 cap and the 2025 framework interact. For autos and auto parts specifically, expect 15% under the Section 232 mechanism. US valuation uses FOB, there’s no VAT (only state sales tax at checkout), no de minimis exemption at any value, and a Merchandise Processing Fee of roughly $8.06 on a typical informal entry.

This site’s live calculator uses a flat general-merchandise duty estimate that’s likely somewhat below this lane’s actual current rate - treat its output as a rough floor rather than a precise figure for Japan-origin goods.

Frequently Asked Questions

Is there a comprehensive US-Japan free trade agreement?

No. The 2020 Phase 1 deal covers only a limited set of agricultural and industrial tariff lines plus digital trade - it’s not a comprehensive FTA, and 2025-2026 tariff actions have added substantial additional duty on top regardless.

Why is there uncertainty about Japan’s exact current tariff rate?

A 2025 framework set a 15% baseline, but that specific IEEPA-based tariff should have fallen with a February 2026 Supreme Court ruling; its replacement mechanism (the July 2026 Section 301 program) caps Japan’s rate lower, around 12.5%, but how the two figures reconcile in practice isn’t clearly documented yet.

Do autos from Japan face the same rate as other goods?

No - autos and auto parts face a separate 15% Section 232 sectoral tariff from a November 2025 arrangement, distinct from the mechanism covering general merchandise.

How big is US-Japan trade?

Japan was the US’s 7th largest source of goods imports in 2025, at $145.84 billion, with the US running a $64.45 billion trade deficit.