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Amazon Japan PPC Guide

Amazon Japan runs on its own seller account, its own currency unit and its own shopping language. Learn the mechanics that make advertising here different from a Western marketplace.

Marketplace: amazon.co.jp | Currency: JPY

Marketplace Overview

Amazon Japan (amazon.co.jp) sells in Japanese and prices in yen, and it sits in Amazon's Far East region rather than in the North American or European groupings. That placement is structural rather than administrative. A European or North American unified account does not cover Japan, so a seller expanding here registers separately and runs the marketplace as its own business, with its own catalogue, its own listings and its own advertising console.

The currency itself changes how bidding behaves. The yen is a zero-decimal currency, so bids are quoted in whole units and the smallest possible change to a bid is one whole yen. Percentage based bid rules that feel smooth in a marketplace with sub-units become coarse here, because every adjustment has to round to a whole number. On lower priced products that rounding can turn a small intended change into a proportionally larger one, or into no change at all.

Fulfilment and tax follow the same separate-country logic. Stock held in European or North American fulfilment centres cannot serve Japanese orders, so using FBA in Japan means importing inventory into Japanese fulfilment centres, which requires an importer of record inside Japan. Non-resident importers are also required to appoint an attorney for customs procedures. Japan operates a qualified invoice system for consumption tax, under which a registered seller issues invoices carrying a registration number. Sellers who supply business customers should treat that registration as part of the launch plan rather than as an afterthought, and take local advice on both points.

PPC Advertising Tips for Amazon Japan

1

Bid in Whole Yen and Watch the Rounding

The yen has no sub-unit, so every bid is a whole number and the smallest possible move is one yen. A percentage step that would be gentle elsewhere has to round here, which can turn a small intended cut into a larger one or into nothing at all. Decide your steps in yen rather than in percentages, then confirm the applied bid matches what you asked for.

2

Research Keywords in Japanese, Not in Translation

Shoppers search in Japanese, and the same product is commonly written in kanji, in hiragana and in katakana, with a katakana loanword often sitting alongside a native word for the same thing. A translated English list will not contain those forms. Build the list from the Japanese storefront's own search suggestions and from your Japanese search term reports, and add each script form as its own keyword rather than assuming they are matched together.

3

Rebuild Negatives for a Language Without Word Spaces

Japanese is written without spaces between words, so the habit of splitting search terms into one word and two word grams does not apply. Group search terms by the meaningful substring they share instead, and negate on irrelevance rather than on poor performance. A term that has converted has a bid problem, not a relevance problem.

4

Daypart Against One Fixed Time Zone

Japan uses a single time zone and does not observe daylight saving, so an hourly bid schedule set once keeps pointing at the same local hours all year, while marketplaces that shift twice a year need theirs re-anchored. Set the modifiers from each hour's revenue per click measured against the overall revenue per click, not from order counts, because an hour can be busy and still convert poorly.

5

Plan Around the Japanese Retail Calendar

The demand calendar is its own. Golden Week runs from late April into early May, Obon falls in the middle of August, and the New Year period carries its own gift and lucky bag buying. Ochugen in summer and oseibo at the year end are established gift giving seasons, and White Day on 14 March follows Valentine's Day. Set budgets and stock cover against those dates rather than a Western calendar.

6

Treat Japan as a New Account, Not a Translated One

Advertising history sits inside the marketplace it was earned in, so campaigns proven elsewhere start from nothing here, and conversion rates differ by market as well as by product. Build bids from Japanese data rather than converting bids from a Western marketplace. Launch on exact match against a small set of root terms, and judge the first weeks on conversion rate rather than on advertising cost of sale.

Top Categories

  • Home and Kitchen
  • Beauty and Personal Care
  • Drugstore and Health
  • Stationery and Office Products
  • Hobbies and Collectables
  • Baby and Maternity
  • Pet Supplies

Challenges

  • -Listings, keywords and customer support all need native Japanese rather than translation
  • -A separate seller account and a separate catalogue from any Western marketplace
  • -FBA needs stock imported into Japan with an importer of record, and non-resident importers must appoint an attorney for customs procedures
  • -Consumption tax registration under the qualified invoice system
  • -Whole yen bidding makes percentage based bid rules coarse on lower priced items

Opportunities

  • +One time zone with no daylight saving, so hourly bid schedules stay anchored all year
  • +A distinct retail calendar that rewards planning stock and budget around named holidays
  • +The same product is searched in several script forms, so the less obvious ones are worth targeting
  • +Setting up the language, the account and the import route is one-time work that does not need repeating once the marketplace is running

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