Datasetpublic

loreatec/japan-procurement-open-data

Japan Public Procurement & Company Open Data Machine-readable extracts of Japanese public-procurement and company open data, compiled and normalised by LoreaTec for japan-tenders.loreatec.jp and bizsearch.loreatec.jp. Everything here comes from official Japanese government sources; the value added is the cleaning, joining and the derived analysis (contract series and re-tender predictions). Updated monthly. The authoritative, always-current copy is… See the full description on the dataset page: https://huggingface.co/datasets/loreatec/japan-procurement-open-data.

sourceHugging Faceotherupdated 2mo agoView on Hugging Face

0likes287downloads

Dataset Card

Japan Public Procurement & Company Open Data

Machine-readable extracts of Japanese public-procurement and company open data, compiled and normalised by LoreaTec for japan-tenders.loreatec.jp and bizsearch.loreatec.jp. Everything here comes from official Japanese government sources; the value added is the cleaning, joining and the derived analysis (contract series and re-tender predictions).

Updated monthly. The authoritative, always-current copy is <https://bizsearch.loreatec.jp/datasets> (with manifest.json).

What is inside

File	Rows	What it is	Source
`awards_fy2013…fy2026.csv.gz`	~310,000	Every national-government (GEPS) contract award since FY2013: case number, title (ja), date, price (JPY), ministry code, procurement method, supplier name and corporate number	調達ポータル落札実績オープンデータ
`award_series.csv.gz`	~42,000	Derived: contracts that repeat (same ministry + same normalised title), with cadence, typical month, last supplier/price, price statistics and the next expected round	LoreaTec analysis of the above
`awards_with_series.csv.gz`	~200,000	The awards that belong to a series, with the normalised title and series id (lets you reproduce the grouping)	LoreaTec analysis
`subsidies_gbizinfo.csv.gz`	~546,000	Subsidies, grants and transfers awarded to companies: corporate number, date, programme, amount, ministry	gBizINFO 補助金情報 (METI)
`licenses_gbizinfo.csv.gz`	~130,000	Notifications, licences and certifications per company	gBizINFO 届出・認定情報 (METI)
`rs_payees.csv.gz`	~149,000	Payees reported by each national budget programme (contractors, grantees, commissioned bodies) with corporate number and amount	行政事業レビュー見える化サイト
`rs_contracts.csv.gz`	~197,000	Individual contracts reported in those review sheets: method, number of bidders, winning ratio, amount	行政事業レビュー見える化サイト
`company_events_90d.csv.gz`	varies	Corporate-registry changes of the last 90 days: new companies, name changes, relocations, closures, mergers	国税庁法人番号公表サイト (daily diffs)
`bidder_registration_windows.json`	67 governments	When each government (national + 47 prefectures + 20 designated cities) opens its bidder-registration window, with validity, method and official URL	Curated by LoreaTec from official pages
`forecast_predictions.json.gz`	~13,000	Current radar of contracts expected to be re-tendered in the coming months	LoreaTec analysis

Format: CSV, UTF-8 with BOM, CRLF, comma-separated, gzip-compressed. Amounts are in yen. Corporate numbers are the 13-digit 法人番号, which is the join key across every file (and against the NTA registry).

Licences — read this before redistributing

This repository mixes several Japanese government sources, each with its own terms. There is no single licence, which is why the repository is marked other:

—調達ポータル (Procurement Portal) award data — open data, reuse allowed with the attribution 「出典：調達ポータル（https://www.p-portal.go.jp/）」.
—行政事業レビュー見える化サイト — Public Data License 1.0 (PDL 1.0), compatible with CC BY 4.0, commercial use allowed. Requires 「出典：行政事業レビュー見える化サイト」 and a separate note that the data was edited (this repository is an edited extract).
—gBizINFO (METI) — reuse allowed with attribution 「出典：gBizINFO（経済産業省）」.
—国税庁法人番号公表サイト (NTA corporate-number registry) — free reuse, attribution recommended.
—LoreaTec's own analysis (series, predictions, normalisation, registration windows) — CC BY 4.0.

If you use any file, keep the attribution of its source column in the table above, state that the data was processed by LoreaTec, and do not present it as the government's original publication. Deliberately not included here: the full 5.8M-company registry (get it from the NTA), the prefectural construction-licence rosters (per-prefecture terms, some forbid redistribution), and anything personal.

Caveats

—Award prices are whole-contract amounts; in multi-winner awards the price may be per unit. Quantities and durations differ, so read the contract titles before comparing.
—Programme payees include intermediaries (agencies, funds, prefectures) that pass money on: do not sum naively across programmes.
—award_series and forecast_predictions are statistical, not announcements. A prediction is "this ministry has re-tendered this contract every year since 2019", not a notice.
—Corporate numbers are missing in a small share of rows (joint ventures, individuals, foreign bodies); 9999999999999 is the placeholder used by the source in the review sheets.
—Company events start on 2023-08-16 (before that only each company's latest registry change is known).

Using it

python

import pandas as pd
awards = pd.read_csv("hf://datasets/loreatec/japan-procurement-open-data/awards_fy2025.csv.gz")
subsidies = pd.read_csv("hf://datasets/loreatec/japan-procurement-open-data/subsidies_gbizinfo.csv.gz")
# join on the 13-digit corporate number
merged = awards.merge(subsidies, left_on="houjin_bangou", right_on="houjin_bangou", how="left")

An MCP server (for Claude, ChatGPT and other assistants) and plain JSON APIs over the same data live at <https://bizsearch.loreatec.jp/mcp> and <https://bizsearch.loreatec.jp/data-api>.

Citation

LoreaTec (2026). Japan Public Procurement & Company Open Data.
Compiled from 調達ポータル, gBizINFO, 行政事業レビュー見える化サイト and 国税庁法人番号公表サイト.
https://bizsearch.loreatec.jp/datasets

Questions, corrections or a bigger API quota: info@loreatec.jp