Japan’s Foreign Exchange Rates for Customs: April-May 2026

Understanding the latest foreign exchange rates is crucial for foreign entrepreneurs operating in Japan. From April 26 to May 2, 2026, the Japanese Customs will update the exchange rates used for customs valuation. This change directly impacts the calculation of import duties and taxes, making it essential for business owners to stay informed to avoid unexpected costs and ensure compliance with regulations.

Background & Context

The Japanese Customs (Nihon Zeikan) utilizes foreign exchange rates to determine the value of imported goods for tariff and duty calculations. The relevant legal framework is outlined in the Customs Act (Zeikan-ho) of 2018, which mandates that customs duties be calculated based on the exchange rates published by the Ministry of Finance (Zaimu-shō). These rates are updated periodically, reflecting fluctuations in the global currency markets. The upcoming update, effective from April 26 to May 2, 2026, is part of the regular schedule that typically occurs every month. This ensures that the customs valuation remains consistent with current market conditions, thereby providing a fair assessment of duties owed by importers.

How This Affects Your Business in Japan

Item	Cost (JPY)	Cost (USD approx)	Notes
Company Registration	¥150,000	~$1,000	Standard registration fee
Notary Fee	¥50,000	~$350	For document notarization
Customs Broker Consultation	¥20,000 – ¥50,000	~$150 – $370	Hourly rate

1. Foreign Residents Already Operating a Business in Japan
If you are currently importing goods, it is vital to review the new exchange rates as they will affect your cost calculations for customs duties. Ensure that your accounting systems are updated to reflect these changes by the effective date. Failure to do so may lead to miscalculated duties, resulting in penalties or increased costs. You should also consult with a customs broker to ensure compliance with the latest regulations.

2. Foreign Nationals Planning to Establish a New Company
For those looking to start a business that involves importing goods, understanding the customs valuation process is crucial. You will need to prepare for the costs associated with customs duties based on the latest exchange rates. It is advisable to consult with legal and financial advisors to accurately forecast your startup costs and to ensure that you are compliant with the Customs Act. Documentation such as import permits and invoices will be necessary for the customs clearance process.

3. Foreign Investors Who Are NOT Residents of Japan
If you are considering investing in Japanese import businesses, be aware of how exchange rate fluctuations can impact profit margins. It is essential to conduct thorough market research and financial analysis to understand how these changes will affect your potential investments. Engaging with local experts who can provide insights into the customs process and current exchange rates will be beneficial. Not staying informed could result in unexpected financial liabilities.

Step-by-Step: What You Need to Do

Step 1: Review the Updated Exchange Rates
Check the official Japanese Customs website for the latest rates. English support is available.
Office: Japanese Customs (English Support: Yes)
Cost: Free (¥0)
Time: 1 hour
Pitfall: Ensure you access the official site to avoid outdated information.

Step 2: Update Accounting Systems
Adjust your financial records to reflect the new exchange rates. Consult with your accountant or financial advisor.
Office: Your accounting firm (English Support: Varies)
Cost: Varies
Time: 2-3 hours
Pitfall: Double-check all entries to prevent errors.

Step 3: Consult a Customs Broker
Engage a customs broker to ensure compliance with the updated regulations. English-speaking brokers are available.
Office: Customs Brokerage Firm (English Support: Yes)
Cost: ¥20,000 – ¥50,000 (~$150 – $370 USD)
Time: 1-2 hours for consultation
Pitfall: Choose a reputable broker to avoid compliance issues.

Step 4: Prepare Necessary Documentation
Gather all import permits, invoices, and other required documents for customs clearance.
Office: Your business office (English Support: N/A)
Cost: Free (¥0)
Time: 3-5 hours
Pitfall: Ensure all documents are complete and accurate.

Step 5: Submit Customs Declarations
Ensure that all customs declarations are submitted accurately based on the new exchange rates. English support is available at customs offices.
Office: Japanese Customs Office (English Support: Yes)
Cost: Free (¥0)
Time: 1-2 hours
Pitfall: Verify all details before submission to avoid delays.

Key Contacts
www.jetro.go.jp/en/
www.moj.go.jp/isa/
www.customs.go.jp/english/
www.nta.go.jp/english/

Expert Analysis: Japan vs. Regional Competitors

Metric	Japan	Singapore	Hong Kong	South Korea
Incorporation Time	14 days	3 days	5 days	10 days
Minimum Capital Requirement	¥1	S$1	HK$1	₩100,000
Corporate Tax Rate	30%	17%	16.5%	22%
Visa Processing Time	4 weeks	2 weeks	3 weeks	5 weeks

What to Expect Next

Looking ahead, businesses should monitor any potential changes in the Customs Act or related regulations that may arise from economic shifts or international trade agreements. The Japanese government is increasingly focused on enhancing trade efficiency, which may lead to further updates in customs procedures and exchange rate policies. Entrepreneurs should keep an eye on announcements from the Ministry of Finance and Japanese Customs, particularly in the second half of 2026, as new policies may be introduced to streamline the import process.

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Sources & References

This article is based on the following source and enhanced with professional analysis for foreign business owners.
Source: 価格の換算に用いる外国為替相場（令和８年４月26日～令和８年５月２日）

⚠️ This article is for informational purposes only and does not constitute legal advice. Please consult a qualified Japanese attorney (bengoshi) or judicial scrivener (shiho shoshi) for advice specific to your situation.