Contracting with Overseas Clients — Governing Law, Currency, and Tax

Approaching overseas client contracts the same way as domestic engagements can cause several risks to surface at once.

Freelancer A received a UI design commission from a US-based startup, signed an English-language contract, and delivered USD 5,000 worth of work. When the client's cash flow deteriorated and payments stopped, A tried to send a formal demand letter but found the contract only stated "Governing Law: State of Delaware." Filing suit under Delaware law from Japan would have required hiring local counsel at a cost of several thousand dollars. Comparing collection costs against the contract value, A was effectively forced to write off the receivable.

In another case, designer B received a branding commission from a German agency denominated in euros at EUR 3,000. When the contract was signed, the rate was JPY 165 per euro; by the time payment arrived, it had moved to JPY 147—cutting the actual yen-denominated receipt by over JPY 50,000 below expectations. Because B had not factored exchange risk into the pricing, effective margins took a significant hit.

In a more serious case, freelance engineer C was receiving monthly compensation equivalent to approximately JPY 500,000 from a Korean company on a long-term outsourcing arrangement, but a tax audit flagged unreported foreign-source income. C had overlooked the withholding tax clause in the contract and had not claimed a foreign tax credit on the Japanese return for the amount withheld abroad. A corrected filing and additional tax assessment followed.

What these cases share is a failure to address governing law, currency risk, and tax treatment before the contract was signed—three distinct problem areas that each require upfront action.

The reason overseas client contracts are more complex than domestic ones is that three structural problems layer on top of each other: legal fragmentation, foreign currency exposure, and cross-border tax rules.

Legal Fragmentation

A contract is interpreted under the law that the parties have agreed to apply—the governing law. In domestic transactions this is automatically Japanese law, but overseas counterparties frequently designate their own country's law. The problem is that contractors often sign without understanding the designated foreign law.

The fundamental difference between common law jurisdictions (UK, US, Australia) and Japanese law (a civil law system) is particularly important. Under common law, courts rely heavily on the written text of the contract; supplementary protections that Japanese civil law provides by default may not apply. As a result, terms a Japanese contractor would consider "obviously implied" may offer no protection under a common law contract.

Foreign Currency Exposure

When fees are invoiced in a foreign currency, exchange rate movements between contract signing and payment become direct revenue variability. Creative engagements often see 30–60 day gaps between delivery and payment, and that window is entirely outside the contractor's control.

International wire transfer fees—covering remittance charges, receiving bank fees, and intermediary bank charges—can total JPY 3,000–8,000 per transaction, consuming a meaningful percentage of revenue on small contracts.

Cross-Border Tax Rules

Services rendered to overseas clients are generally classified as non-taxable transactions (fukazei) under Japanese consumption tax law—not zero-rated exports. While this is administratively simpler, accidentally adding consumption tax to an overseas invoice creates a correction problem later.

At the same time, many countries withhold tax on payments to foreign service providers. This double-taxation risk can be reduced through a tax treaty, but only if the treaty's procedural requirements are met in advance.

Selecting a governing law for an international contract is the single most consequential clause decision, as it determines which country's courts—and which body of law—will govern any dispute.

Governing Law Selection Criteria

For freelance contractors, the safest choice is Japanese law: you understand it, and domestic legal advice is accessible and affordable. In practice, overseas counterparties frequently resist Japanese law. A realistic negotiation order looks like this:

1. Japanese law (first preference): Best for contractor protection; often rejected on unfamiliarity grounds
2. Neutral third-country law (English law or Singapore law): Widely accepted in international commercial transactions; Singapore law in particular is well-regarded in the Asia-Pacific region
3. Counterparty's home law (last resort): If you must accept foreign law, commission a professional review before signing

Designing the Dispute Resolution Clause

The two main options are litigation and arbitration.

For most freelancers, arbitration is generally preferable. Arbitration proceedings are confidential, procedurally standardized, and often faster and less expensive than foreign court litigation. Critically, under the New York Convention (Convention on the Recognition and Enforcement of Foreign Arbitral Awards), arbitral awards are enforceable in most countries—making recovery more realistic than a foreign court judgment.

Common institutional choices include:

• JCAA (Japan Commercial Arbitration Association): Japan-based, Japanese-language support, strong in Asia-Pacific matters
• ICC (International Chamber of Commerce): Global reach; procedural costs are higher
• SIAC (Singapore International Arbitration Centre): Highly regarded for Asia-Pacific transactions

A standard clause might read: "Any dispute arising out of or in connection with this Agreement shall be finally settled by arbitration under the Rules of the Japan Commercial Arbitration Association. The seat of arbitration shall be Tokyo, Japan. The governing law shall be the laws of Japan."

When to Seek Professional Review

For contracts under JPY 500,000, attorney review fees (typically JPY 50,000–150,000) may not be cost-justified. At a minimum, verify that the English-language contract explicitly addresses: (1) governing law, (2) dispute resolution method and venue, and (3) intellectual property ownership of deliverables.

Currency risk management should start at the quote stage, not after the contract is signed.

Negotiating a Fixed Rate or JPY Invoicing

The simplest mitigation is invoicing in Japanese yen. "JPY 300,000" eliminates FX risk entirely. Some overseas clients can accommodate yen invoicing—always ask before defaulting to foreign currency.

If yen invoicing is not possible, the next-best approach is to state the reference rate in the quote and include a rate-adjustment provision. For example: "This quote is calculated at USD/JPY 150.00. The final invoice amount will be adjusted to the exchange rate as of the invoice date." This prevents one-sided FX losses from being absorbed by the contractor.

Invoice Timing Strategies

Shortening the gap between invoice issuance and payment is one of the most effective FX risk controls available:

• Require a 50% upfront deposit as a contract condition
• Set payment terms to "within 14 days of invoice date" rather than net-30 or net-60
• Bill against milestones so that revenue is received incrementally throughout the project

Wire Transfer Fee Treatment

International wire fees can be borne by either party. Specifying "All charges on remitter's account" (or equivalent language in Japanese: 送金手数料は発注者負担) in the contract or purchase order prevents the receiving bank charges from silently reducing the net payment.

For receiving international payments, dedicated international payment platforms generally offer better fee structures and exchange rates than large retail banks.

Tax treatment of overseas client revenue spans three separate issues, each requiring independent analysis.

Consumption Tax Classification

Services rendered to overseas businesses—web design, engineering, consulting, and most other outsourcing work—are classified as non-taxable (fukazei) rather than zero-rated for Japanese consumption tax purposes. The practical implication is that no consumption tax should appear on invoices to overseas clients. For taxable revenue ratio calculations, non-taxable sales are excluded from both the numerator and denominator.

Withholding Tax by the Overseas Client

Many countries—including South Korea, Taiwan, Thailand, and others across Asia—withhold tax on payments to foreign service providers at the time of remittance (see: Withholding on Payments to Non-Residents). This creates a potential double-taxation scenario where the same income is taxed both abroad and in Japan.

Foreign withholding tax can be credited against Japanese income tax through the foreign tax credit mechanism. The process is:

1. Obtain a Withholding Tax Certificate from the overseas payer
2. Complete the "Foreign Tax Credit" section on your Japanese income tax return
3. Attach the Foreign Tax Credit Statement (Schedule 3) to the return

Claiming Tax Treaty Relief

Where Japan has a tax treaty with the client's country, the applicable withholding rate may be reduced or eliminated. For example, the Japan-US tax treaty contains reduced-rate or exemption provisions for certain categories of service income.

Treaty relief must typically be claimed by submitting a prescribed form to the foreign tax authority before payment is made. Retroactive application is generally not available, so confirming treaty availability before the engagement begins is essential.

Converting Foreign Currency Income

Foreign-currency revenue must be converted to yen for Japanese tax reporting purposes using the exchange rate on the date of receipt (Conversion of Foreign-Currency Transactions). The standard rate is the middle rate (TTM) published by your bank on the transaction date; a consistently applied buying rate (TTB) is also permissible.

For contractors receiving foreign currency multiple times per year, maintaining a transaction-by-transaction log of dates, amounts, and conversion rates is the safest practice. Consult a tax advisor on whether the annual average rate approach is appropriate for your situation.

Confirming the following items before signing an overseas freelance contract addresses the majority of avoidable risks.

Contract Review Items

• [ ] Is the governing law (Governing Law clause) explicitly stated?
• [ ] Is the dispute resolution method (arbitration or litigation) and venue specified?
• [ ] Is ownership of deliverables and intellectual property clearly defined?
• [ ] Are payment terms—currency, amount, due date, and payment method—concrete?
• [ ] If an NDA is included, is the scope of competition restrictions reasonable?

Tax and Accounting Items

• [ ] Have you confirmed whether Japan has a tax treaty with the client's country?
• [ ] Have you identified any local withholding tax obligations and the required procedures?
• [ ] Is your accounting software configured to classify overseas client revenue as non-taxable (fukazei)?
• [ ] Do you have a foreign currency account and a process for recording exchange rates at receipt?

Pre-Commencement Operational Items

• [ ] Have you agreed on upfront payment or milestone billing terms?
• [ ] Have you agreed on how to handle scope changes (change orders or contract amendments)?
• [ ] Have you confirmed communication methods, response time expectations, and time zone protocols?
• [ ] Are deliverable acceptance criteria and the approval workflow clearly defined?

Among these, governing law, dispute resolution, currency, and withholding tax are the four items that are extremely difficult to renegotiate after a contract is signed. They must be finalized at the negotiation stage.

With proper preparation, the risk profile of overseas engagements can be made comparable to domestic work. Use this framework as a standard operating procedure for every international client relationship.

References

Japan's Tax Treaty Policy Overview (2024)

Withholding Tax on Non-Residents (Tax Answer No. 2880) (2024)

Conversion of Foreign-Currency Transactions (Tax Answer No. 1926) (2024)

Overview of Arbitration (Japan Commercial Arbitration Association) (2024)