# 輸入利益チェッカー (Japan Import Profit Checker)

https://yunyu-rieki.com/

> Free calculator for goods imported into Japan from any country. It returns Japanese customs duty (simplified rate for shipments up to 200,000 yen, general rate, small-value exemption up to 10,000 yen, per-pair duty on leather shoes), import consumption tax (7.8% national + 2.2% local with the official rounding), landed cost per unit, profit, margin, break-even price and the maximum purchase price that keeps a target margin. Exchange rates are the official Japan Customs weekly rates (公示レート), refreshed daily. Results are estimates; the final HS classification and customs value are decided by Japan Customs.

日本への輸入（中国・アメリカ・韓国・ヨーロッパなど、どの国からでも）で、関税・輸入消費税・送料・販売手数料を含めた1個あたりの原価、利益、利益率、損益分岐点、仕入れ値の上限を計算する無料ツールです。

## For AI agents

- [MCP server](https://yunyu-rieki.com/mcp): Streamable HTTP (POST, JSON responses, no auth). Tools: `calculate_import_profit`, `list_items`, `get_exchange_rates`.
- [Calculation API](/api/calc): GET with query parameters or POST JSON. `GET /api/calc` with no parameters returns the input schema. Example: `/api/calc?itemId=textile_bag&goods=1500&currency=CNY&qty=50&intlShip=12000&price=2980&feePct=10&domShip=400`
- [Item list](/api/items): item ids, HS codes, general and simplified duty rates. Filter with `?q=`.
- [Exchange rates](/api/rates): official Japan Customs weekly rates, yen per unit. Filter with `?currency=CNY`.
- [Raw data](/data/latest.json): exchange rates and the tariff schedule version checked.

## Rules used

- Customs value = product price + shipping in the origin country + international shipping + insurance (personal-use imports: 60% of the retail price).
- Duty = customs value (rounded down to 1,000 yen) x rate, rounded down to 100 yen. Leather shoes: 30% or 4,300 yen per pair, whichever is higher.
- Consumption tax base = customs value + duty, rounded down to 1,000 yen. National tax 7.8% and local tax = national x 22/78, each rounded down to 100 yen.
- Not covered: EPA/FTA preferential rates, alcohol and tobacco, food items.

## Sources

- [Japan Customs tariff schedule](https://www.customs.go.jp/tariff/index.htm)
- [Simplified tariff rates](https://www.customs.go.jp/tsukan/kanizeiritsu.htm)
- [Japan Customs exchange rates](https://www.customs.go.jp/tetsuzuki/kawase/index.htm)