Korea Business Registration Check — BRN (사업자등록번호) Status, KYB & Company Data

Verify South Korean companies against official Korean government data in one call. Give it a Korean business registration number (BRN, 사업자등록번호), a corporate registration number (CRN, 법인등록번호), or a company name, and get back clean English JSON:

• Is this Korean business still operating? Tax registration status from the National Tax Service (NTS, 국세청): active, suspended (휴업), closed (폐업) or not_registered, with the closure date.
• What VAT / tax type is it? General taxpayer, simplified taxpayer, VAT-exempt, non-profit, etc.
• Who is this company? English and Korean name, establishment date, industry, employees, average salary, listing market (KOSPI / KOSDAQ / KONEX / unlisted), address, website, auditor and audit opinion — from the Financial Services Commission (FSC, 금융위원회).
• How big is it? Optional latest annual summary financials: revenue, operating profit, net income, total assets, liabilities, equity, debt ratio (consolidated and separate).

Why use this Actor

The Korean public data portal (data.go.kr) only issues API keys to Korean residents and Korean-registered businesses with Korean identity verification. Foreign developers, compliance teams and AI agents cannot call these APIs directly. This Actor gives you the same official data with no Korean account, in English, in bulk.

Typical uses:

• KYB / supplier due diligence — check that a Korean supplier, customer or marketplace seller is a registered, active business before you pay or onboard them.
• Invoice and payout checks — confirm a Korean counterparty's BRN is valid and not closed.
• Lead and CRM hygiene — flag closed or suspended Korean companies in a list.
• Company research — look up a Korean company's English name, size, listing and headline financials.

Input

Field	Type	Description
queries	array of strings	BRNs (10 digits, e.g. 124-81-00998), CRNs (13 digits, e.g. 130111-0006246) or company names (e.g. 삼성전자). Hyphens and spaces are ignored. Up to 1,000 per run.
includeCompanyProfile	boolean	For BRN queries, also return the company profile when available. Default true. Turn off for status-only bulk checks.
includeFinancials	boolean	Add latest annual summary financials for companies found by CRN or name. Default false.
maxMatchesPerName	integer	For name queries, how many matching companies to return (1–10). Default 3.

{
  "queries": ["124-81-00998", "130111-0006246", "삼성전자"],
  "includeFinancials": true
}

What each query type returns

You provide	You get
BRN (사업자등록번호, 10 digits)	Registration status and tax type for any Korean business, including sole proprietors. Plus the company profile (and financials if requested) when the company is in the FSC corporate database.
CRN (법인등록번호, 13 digits)	Company profile plus registration status (the BRN is resolved automatically). Financials if requested.
Company name	Up to maxMatchesPerName matching companies, each with profile and status.

Company profiles and financials cover companies in the FSC corporate database (listed companies and companies subject to external audit). Small private companies and sole proprietors return status only.

Output

One dataset item per business. Example:

{
  "query": "124-81-00998",
  "queryType": "business_registration_number",
  "businessRegistrationNumber": "124-81-00998",
  "status": "active",
  "statusKo": "계속사업자",
  "taxType": "vat_general",
  "taxTypeKo": "부가가치세 일반과세자",
  "closedDate": null,
  "taxTypeChangedDate": null,
  "eInvoiceAppliedDate": null,
  "isSummaryTaxPayerUnit": false,
  "company": {
    "corporateRegistrationNumber": "130111-0006246",
    "businessRegistrationNumber": "124-81-00998",
    "nameKo": "삼성전자(주)",
    "nameEn": "SAMSUNG ELECTRONICS CO,.LTD",
    "establishedDate": "1969-01-13",
    "industryKo": null,
    "mainBusinessKo": null,
    "employees": 128881,
    "averageTenureYears": 13.7,
    "averageAnnualSalaryKrw": 158000000,
    "isSme": null,
    "listingMarket": "KOSPI",
    "listingMarketKo": "유가",
    "fiscalYearEndMonth": 12,
    "addressKo": "경기도 수원시 영통구  삼성로 129 (매탄동)",
    "website": "www.samsung.com/sec",
    "auditor": "삼정회계법인",
    "auditOpinionKo": "적정의견",
    "mainBank": null,
    "fssCorpCode": "00126380"
  },
  "financials": [
    {
      "fiscalYear": 2025,
      "statementType": "consolidated",
      "statementTypeKo": "연결요약재무제표",
      "currency": "KRW",
      "revenue": 333605938000000,
      "operatingProfit": 43601051000000,
      "profitBeforeTax": 49481471000000,
      "netIncome": 45206805000000,
      "totalAssets": 566942110000000,
      "totalLiabilities": 130621773000000,
      "totalEquity": 436320337000000,
      "capitalStock": 897514000000,
      "debtRatioPercent": 29.937126905,
      "baseDate": "2025-12-31"
    }
  ],
  "matchRank": null,
  "error": null,
  "sources": [
    "National Tax Service (국세청) business status API via data.go.kr",
    "Financial Services Commission (금융위원회) corporate basic info API via data.go.kr",
    "Financial Services Commission (금융위원회) financial statements API via data.go.kr"
  ],
  "checkedAt": "2026-09-30T15:47:18+00:00"
}

Status values

status	Meaning
active	Registered and operating (계속사업자)
suspended	Temporarily suspended (휴업자)
closed	Closed (폐업자); see closedDate
not_registered	The BRN is not registered with the NTS
invalid_number	The BRN check digit is wrong — the number cannot exist. Not charged.
invalid_input	Not a BRN, CRN or name. Not charged.
company_not_found	No company matched the CRN or name
no_business_number	Company found, but no BRN is on record, so status could not be checked
lookup_failed	The government API returned an error; see error

Tax type values (taxType)

vat_general (일반과세자), vat_simplified (간이과세자), vat_simplified_invoicing (간이과세자, 세금계산서 발급), vat_special (과세특례자), vat_exempt (면세사업자), non_profit_or_public_body, registered_organization, other. The original Korean label is always included in taxTypeKo.

Pricing

Pay per event — you only pay for results:

• business-status — per business whose registration status was returned
• company-profile — per company profile returned
• financial-summary — per company with financials returned

Invalid numbers and invalid input are never charged. See the Pricing tab for current prices.

Data sources and freshness

• National Tax Service (국세청) business registration status API, via data.go.kr. Updated about every 30 minutes (new businesses may take 1–2 days).
• Financial Services Commission (금융위원회) corporate basic information and financial statements APIs, via data.go.kr. Updated daily (one business day lag).

Both datasets are published by the Korean government under the "no restrictions" (제한 없음) use license.

Privacy

This Actor returns company-level data only. Representative (CEO) names, phone and fax numbers present in the source data are deliberately removed. Queries are not stored beyond your own run's dataset.

Use with AI agents

This Actor is designed to be called by AI agents (MCP, tool calling). One call answers "Is this Korean company real and still operating?" Pass whatever identifier you have — the Actor detects BRN, CRN or name automatically — and read status from the result.

Limitations

• Name search matches the Korean registered name best. English names may not match; use the BRN or CRN when you have it.
• Company profiles exist only for companies in the FSC corporate database (listed and externally audited companies). Sole proprietors return status only.
• Registration status reflects tax registration, not creditworthiness.