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Overview

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Identifiers

Collect two identifiers from each business customer in South Korea and submit them as strings on the application body. Tax ID: 10 digits, format XXX-XX-XXXXX. First 3 digits = regional tax office; digits 4–5 = entity type code; digits 6–9 = serial; digit 10 = check digit. Universal business identifier; appears on every 사업자등록증. Registration number: 13 digits, format XXXXXX-XXXXXXX. Registry-side identifier assigned at court on incorporation. As of 2025-01-31, the serial portion was expanded from 6 to 7 digits and the checksum digit abolished for newly issued numbers.

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Sector regulators

FSC · FSS · BoK · KRX · KSFC

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How documents combine

For each evidence area, this table shows whether the listed documents are alternatives (any one of) or a bundle (all required). The artifact-by-artifact lookup follows below.

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Documents to collect

The physical documents you’ll collect from your customer, with the evidence area each one proves. One document can prove multiple areas — for example, Brazil’s Cartão CNPJ covers both tax and business-registration proof, so it appears once with both areas listed. Not applicable in South Korea: Operating Permit, Governance Records. Skip these areas — no local artifact exists.

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Collection notes

  • Legal Registration: Obtained from iros.go.kr; confirms CRN, legal existence, directors, capital.
  • Constitutive Documents: Notarized at formation for JSC; filed with court registry; obtain certified copy from iros.go.kr or direct from company.
  • Tax Registration: NTS-issued; bears BRN (XXX-XX-XXXXX); downloadable via hometax.go.kr. BRN and CRN are two distinct numbers.
  • Sector-Specific License: Required for financial services, payment processing, securities dealing, insurance.
  • Ownership Records: Company-maintained; not a public register.
  • Signing Authority: The corporate seal certificate (valid 3 months) accompanies the board resolution and is the standard execution package for binding authority in Korea.
  • Address: Conduit universal policy: lease (no time bound) OR utility bill OR bank statement, with utility/bank dated within 90 days. Same evidence satisfies both registered-address and operating-address checks.
  • Good Standing: No standalone good-standing certificate is issued; a recently dated copy of the listed document evidences current standing. South Korea uses the dated 등기사항전부증명서 (Corporate Registry Extract), issued on demand by the Supreme Court Registry via iros.go.kr, as the standing-proof instrument; a recently-issued extract (within 3 months) serves the CoGS function and is modelled under business_registration

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Person roles

When you submit a person on the application body, set their role to one of Conduit’s canonical BusinessPersonRole values. Use this table to map a local corporate-governance title onto the right canonical role.

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Additional fields

Country-specific fields you’ll need to collect during onboarding, beyond the document uploads.

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Notes

  • Two distinct identifier numbers: the BRN (10-digit, NTS) and CRN (13-digit, court registry) serve different functions — collect both. They are not interchangeable and appear on different documents.
  • Corporate Seal Certificate is time-limited: the 법인인감증명서 has a 3-month validity; a stale certificate is routinely rejected. Always request a fresh issuance dated within the prior 3 months.
  • CRN format changed 2025-01-31: numbers issued from that date have a 7-digit serial portion and no check digit — validation routines that rely on the old checksum will fail for newly incorporated entities.