Korea Company Registry API - Business Number Lookup 사업자 조회

Korea Company Registry API: Business Number Lookup (사업자 조회)

Look up South Korean companies by name, business registration number (사업자등록번호) or corporate registration number (법인등록번호) and get clean English JSON / CSV / Excel from official government data: registered name (Korean and English), corporate and business numbers, representative, head office address, founding date, listing market, employees, auditor, website, phone, optional financial statements, and the live National Tax Service status (active, suspended or closed, with VAT tax type and closure date).

No scraping of private websites: every field comes from the official open APIs of the Public Data Portal (data.go.kr), published by the Financial Services Commission (금융위원회) and the National Tax Service (국세청) under an unrestricted license.

What you can use it for

• KYB and customer onboarding: confirm that a Korean business number is real and the business is still operating before you open an account, ship goods or pay out.
• Supplier and partner due diligence: check status, founding date, size, auditor opinion and revenue trend of a Korean company.
• Fraud and invoice checks: flag closed or suspended businesses and numbers that fail the official checksum.
• Lead enrichment: turn a list of Korean company names into registration numbers, addresses, websites, employee counts and revenue.
• Market and investment research: pull revenue, operating profit, assets and debt ratio by year for listed and unlisted companies that file with the FSC.
• CRM hygiene: re-check thousands of business numbers in one run (status is checked in batches of 100).

Input

Field	Example	Notes
companyNames	["삼성전자", "카카오"]	Korean company names. Matches names that contain the text. Best matches (exact name first, then larger companies) come first.
businessNumbers	["124-81-00998"]	10-digit 사업자등록번호, dashes optional. Returns NTS status for every number and the company profile when it is a registered corporation.
corporateNumbers	["130111-0006246"]	Optional 13-digit 법인등록번호.
maxResultsPerName	10	Limit per name search (default 50, 0 = no limit).
exactNameMatch	false	Keep only companies whose name equals the query, ignoring 주식회사 / (주) and spaces.
includeNtsStatus	true	Live National Tax Service status. No extra charge.
includeFinancials	false	Adds yearly summary financial statements (consolidated and separate). Extra event per company with financials.
financialYears	3	Latest N fiscal years.
onlyActive	false	Drop suspended, closed and unregistered businesses.
maxItems	0	Stop after N results (0 = no limit).

Example: verify a list of business numbers

{ "businessNumbers": ["124-81-00998", "220-81-62517", "120-81-47521"] }

Example: company profile with 3 years of financials

{ "companyNames": ["삼성전자"], "exactNameMatch": true, "includeFinancials": true, "financialYears": 3 }

Output example

{
  "query": "삼성전자",
  "query_type": "company_name",
  "found_in_registry": true,
  "company_name_ko": "삼성전자(주)",
  "company_name_en": "SAMSUNG ELECTRONICS CO,.LTD",
  "company_name_romanized": "Samseongjeonja",
  "corporate_registration_number": "1301110006246",
  "corporate_registration_number_formatted": "130111-0006246",
  "business_registration_number": "1248100998",
  "business_registration_number_formatted": "124-81-00998",
  "business_number_checksum_valid": true,
  "representative_ko": "전영현, 노태문",
  "market": "KOSPI",
  "founded_date": "1969-01-13",
  "listing_date": "1975-06-11",
  "fiscal_year_end_month": 12,
  "employees": 128881,
  "avg_tenure_years": 13.7,
  "auditor_ko": "삼정회계법인",
  "audit_opinion_ko": "적정의견",
  "address_ko": "경기도 수원시 영통구 삼성로 129 (매탄동)",
  "postal_code": "16677",
  "province": "Gyeonggi-do",
  "district": "Suwon-si",
  "phone": "02-2255-0114",
  "website": "www.samsung.com/sec",
  "dart_corp_code": "00126380",
  "registry_data_date": "2026-11-08",
  "nts_status": "active",
  "nts_status_ko": "계속사업자",
  "tax_type_ko": "부가가치세 일반과세자",
  "closed_date": null,
  "financials": [
    { "year": 2025, "statement": "consolidated", "revenue": 333605938000000, "operating_profit": 43601051000000, "net_income": 45206805000000, "total_assets": 566942110000000, "total_liabilities": 130621773000000, "total_equity": 436320337000000, "debt_ratio_pct": 29.94, "currency": "KRW" }
  ],
  "latest_revenue_krw": 333605938000000,
  "latest_financial_year": 2025
}

nts_status values: active (계속사업자), suspended (휴업자), closed (폐업자), not_registered (the NTS does not know the number), invalid_number (fails the official checksum, not sent to the API).

Pricing

Pay per result:

• $3.00 per 1,000 companies or business numbers (profile and NTS status included)
• +$1.00 per 1,000 companies with financial statements when includeFinancials is on

You can set a maximum cost per run in Apify and the actor stops when it is reached.

FAQ

How do I check if a Korean business registration number is valid? Put it in businessNumbers. The actor validates the checksum and asks the National Tax Service whether the business is active, suspended or closed, and returns its VAT tax type.

Can I search by English company name? The official registry is searched by Korean name. Results include the English name when the company filed one. If you only have an English name, search the Korean name or use the business number.

Does it cover sole proprietors? NTS status works for every business number, including sole proprietors. Company profiles and financials cover corporations (법인) in the Financial Services Commission data.

How fresh is the data? NTS status is live. Company profiles show registry_data_date, the date of the latest official update; financials are the latest filed fiscal years.

What about personal data? The actor returns only what the official corporate data publishes about companies (including the representative's name as filed). It does not collect anything else.

Is there a limit? The source APIs have daily quotas. Very large runs may stop with a clear "daily quota reached" warning; run the rest the next day.

Source and license

• Financial Services Commission (금융위원회): 기업기본정보, 기업 재무정보, via the Public Data Portal (공공데이터포털, data.go.kr). License: 이용허락범위 제한 없음 (no restriction on use).
• National Tax Service (국세청): 사업자등록정보 진위확인 및 상태조회 서비스, via data.go.kr. License: 이용허락범위 제한 없음.

Every result carries a source field naming the origin. This actor is not affiliated with the Korean government.