Translating Terms of Service and Privacy Policies into Japanese
If you sell to customers in Japan or run a website or app for Japanese users, you will usually want Japanese versions of your terms of service (利用規約) and privacy policy (プライバシーポリシー). A translation lets Japanese users understand what they are agreeing to and shows that you take the market seriously. Translation alone is not enough, though: Japanese law has its own requirements, such as the Act on the Protection of Personal Information and, for online sales, a required disclosure page (特定商取引法に基づく表記). Have a lawyer familiar with Japanese law check what your documents need to say, then have them translated accurately and consistently.
This guide is general information, not legal advice. We are translators, not lawyers.
Which documents you may need
| Document | Japanese name | Notes |
|---|---|---|
| Terms of service | 利用規約 | The rules for using your site, app or service. |
| Privacy policy | プライバシーポリシー・個人情報保護方針 | How you collect, use and share personal data, including transfers abroad. |
| Disclosure for online sales | 特定商取引法に基づく表記 | Seller details, prices, payment, delivery and returns. Common on Japanese e-commerce sites. |
| Cookie notice | Cookieポリシー | Often part of the privacy policy. |
| Refund and cancellation policy | 返品・キャンセルポリシー | Japanese customers look for this before buying. |
Translate, adapt or rewrite?
There are three common approaches:
- Translate your global documents into Japanese, with a clause stating which language prevails if they differ.
- Adapt them for Japan, adding sections required under Japanese law after a lawyer’s review, then translate.
- Draft Japan-specific documents with a Japanese lawyer, with an English version for your own team.
Many overseas companies start with the second. Whichever you choose, decide which language is legally binding and say so clearly in both versions.
What makes legal translation hard
- Terms without exact equivalents. Concepts from your home legal system may not exist in the same form in Japan. A good translator flags these instead of guessing.
- Consistency. “Personal data”, “personal information” and “user data” must each map to one Japanese term throughout.
- Formal style. Japanese legal text uses a fixed, formal style with numbered articles (第1条) and set expressions. Casual Japanese undermines trust.
- Readability. Japanese users appreciate a short plain-language summary alongside the formal text.
Keeping versions in sync
Every time you update the English, the Japanese must follow. Keep a glossary of key terms, version numbers and dates on both, and send changes for translation as a marked-up list rather than a whole new document. This keeps costs down and avoids errors creeping in.
The rest of the customer journey
Legal pages are only one part. Checkout, emails, FAQs and support all need Japanese too. See a website for Japanese customers, localising your product for Japan and the translation checklist. If you have received a Japanese contract to review, see translating a Japanese contract.
How Hanabuddies can help
We translate terms of service, privacy policies, online sales disclosures and related pages between English and Japanese, keeping terminology consistent and the style appropriate for Japanese legal text. We work alongside your lawyer: they decide what the documents must say, and we make sure the Japanese says it clearly. We do not give legal advice or provide certified translation.