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Overview

FieldValue
RegionAsia-Pacific
ISO 3166-1GU / GUM
RegistryGeneral Licensing and Registration Branch, Guam Department of Revenue and Taxation
Last updated2026-06-10

Identifiers

Collect two identifiers from each business customer in Guam and submit them as strings on the application body.
API fieldLocal nameIssuer
businessInfo.taxIdEmployer Identification Number (EIN) / Gross Receipts Tax (GRT) Account NumberInternal Revenue Service (IRS) / Guam Department of Revenue and Taxation (DRT)
businessInfo.businessEntityIdBusiness Registration / Entity File NumberGuam Department of Revenue and Taxation — General Licensing and Registration Branch
Tax ID: Guam is an unincorporated US territory. Federal tax law applies directly (Organic Act of Guam 1950, 48 U.S.C. § 1421). Businesses use a federal Employer Identification Number (EIN) obtained from the IRS via Form SS-4. The EIN is also registered with the Guam DRT when applying for a Business License, at which point the DRT assigns a Gross Receipts Tax (GRT) Account Number printed at the top of the Business License. The GRT Account Number (1–9 digits, no fixed format confirmed) serves as the primary local tax account identifier for filing monthly GRT returns (Form GRT-1, Business Privilege Tax Return) under Title 11 GCA. The IRS EIN Confirmation Letter (CP 575 or 147C) is the primary documentary evidence of tax registration. Registration number: Assigned by the DRT General Licensing and Registration Branch upon filing formation documents (Articles of Incorporation under Title 18 GCA Chapter 2 for corporations; Articles of Organization under Title 18 GCA Chapter 15 for LLCs; Certificate of Limited Partnership for LPs; etc.). The registration number appears on the Certificate of Incorporation, Certificate of Organization, or equivalent formation document issued by the DRT. No publicly confirmed fixed-length or fixed-format sequence; issued as a numeric sequence by DRT filing staff.

Sector regulators

Guam Department of Revenue and Taxation (DRT) — General Licensing and Registration Branch (entity formation, Business License) · Guam Department of Revenue and Taxation (DRT) — Insurance, Securities, Banking and Real Estate Branch / Commissioner of Banking and Insurance (banking, insurance, securities, money transmitter) · Banking and Insurance Board, Guam DRT (banking and insurance oversight board) · Guam Contractors License Board (CLB) · Guam Real Estate Commission (real estate brokers/salespersons) · FinCEN (federal AML/BSA oversight — Bank Secrecy Act applies to Guam financial institutions) · Federal Deposit Insurance Corporation (FDIC) · U.S. Securities and Exchange Commission (SEC)
Local nameAbbreviationDescription
Domestic For-Profit CorporationCorp. / Inc.Incorporated under Title 18 GCA, Division 1, Part 1 (The Corporate Law) and the Guam Business Corporation Act (Title 18 GCA Chapter 28); Articles of Incorporation filed with the DRT General Licensing and Registration Branch; 100filingfee;perpetualdurationunlessotherwisestated;mustappointaregisteredagentonGuam;governedbyaboardofdirectorsandofficers;SwornAnnualReportduebetweenJuly1andSeptember1eachyear(100 filing fee; perpetual duration unless otherwise stated; must appoint a registered agent on Guam; governed by a board of directors and officers; Sworn Annual Report due between July 1 and September 1 each year (100 fee). Closest US equivalent: C-Corp.
Nonprofit CorporationIncorporated under Title 18 GCA, Division 1, Part 1 (nonprofit provisions) by filing Articles of Incorporation with the DRT; must state charitable, religious, educational, or similar nonprofit purpose; no share capital issued; any net earnings applied to declared purposes; Annual Report due July 1–September 1 ($10 fee). May apply to the IRS for federal 501(c) tax-exempt status. Closest US equivalent: 501(c) Nonprofit Corporation.
Professional CorporationP.C.Formed under Title 18 GCA for licensed professionals (physicians, dentists, attorneys, accountants, engineers, architects, and other licensed professionals); all shareholders and directors must be licensed in the relevant profession; formed by filing Articles of Incorporation with DRT; name must include ‘Professional Corporation’ or ‘P.C.’. Closest US equivalent: Professional Corporation (PC).
Limited Liability CompanyLLCFormed under Title 18 GCA Chapter 15 (Guam Limited Liability Company Act, added by Public Law 23-125); Articles of Organization filed with DRT; 250filingfee;DirectorofRevenueandTaxationissuesaCertificateofOrganizationuponapproval;LLCnamemustincludelimitedcompany,limitedliabilitycompany,L.C.,orL.L.C.;membermanagedormanagermanaged;mustappointaregisteredagentinGuam;SwornAnnualReportdueJuly1September1(250 filing fee; Director of Revenue and Taxation issues a Certificate of Organization upon approval; LLC name must include 'limited company', 'limited liability company', 'L.C.', or 'L.L.C.'; member-managed or manager-managed; must appoint a registered agent in Guam; Sworn Annual Report due July 1–September 1 (100 fee). Equivalent to a US LLC.
General PartnershipGPTwo or more persons carrying on business together under Title 18 GCA (partnership provisions); no separate entity-formation filing required but must obtain a Guam Business License from DRT; may register a fictitious trade name (Certificate of Transacting Business Under a Fictitious Name, $25); unlimited joint and several liability for all partners. Closest US equivalent: General Partnership (GP).
Limited PartnershipLPFormed under Title 18 GCA (limited partnership provisions); one or more general partners with unlimited liability and one or more limited partners whose liability is capped at their capital contribution; Certificate of Limited Partnership filed with DRT; must maintain a registered agent in Guam. Closest US equivalent: Limited Partnership (LP).
Registered Limited Liability PartnershipLLPFormed under Title 18 GCA Chapter 25 (as amended by P.L. 23-65, enacted November 22, 1995, Substitute Bill No. 257); a general partnership that has registered to obtain limited liability protection for its partners against the wrongful acts of other partners; statement of qualification filed with DRT; commonly used by professional practices. A foreign LLP must register with DRT within 30 days of commencing business in Guam. Closest US equivalent: Limited Liability Partnership (LLP).
Sole ProprietorshipA single individual operating a business on their own account; no separate entity formation filing required with DRT; no registered agent requirement; unlimited personal liability. Must obtain a Guam Business License from DRT before commencing operations. Must register any fictitious trade name other than the owner’s legal name with DRT (Certificate of Transacting Business Under a Fictitious Name). Must obtain an EIN from the IRS for employer tax purposes. Equivalent to a US Sole Proprietorship.
Branch of Foreign CorporationA foreign corporation (off-island or international) registered to transact business in Guam under Title 18 GCA Section 7101; must obtain a Certificate of Authority from the DRT Director before transacting business, plus a Guam Business License; must appoint a registered agent in Guam; must submit a certified copy of its home-jurisdiction articles of incorporation and a certificate of good standing or equivalent from the home jurisdiction. Not a separate legal entity — the foreign parent remains fully liable. Closest US equivalent: Foreign Corporation qualified to do business.
Nonprofit Cooperative AssociationFormed under Title 18 GCA Chapter 13 (Nonprofit Cooperative Associations); organized for the mutual benefit of members in agricultural, consumer, credit, or similar cooperative activities; registered with DRT; net earnings distributed proportionately among member-patrons. Closest US equivalent: Cooperative Corporation.

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.
Evidence areaDocuments needed
Legal RegistrationAny one of: Certificate of Incorporation · Certificate of Organization · Certificate of Limited Partnership (optional: Certificate of Authority)
Constitutive DocumentsAny one of: Articles of Incorporation · Articles of Organization (optional: Operating Agreement)
Tax RegistrationAny one of: EIN Confirmation Letter · Guam Business License
Operating PermitGuam Business License
Ownership RecordsRegister of Shareholders
Governance RecordsAny one of: Register of Directors and Officers · Sworn Annual Report
Signing AuthorityAny one of: Board Resolution · Power of Attorney
AddressAny one of: Utility Bill · Bank Statement · Lease Agreement
Good StandingCertificate of Good Standing

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.
DocumentProves
Certificate of IncorporationLegal Registration
Certificate of Organization (LLC)Legal Registration
Certificate of Limited PartnershipLegal Registration
Certificate of Authority (Foreign Corporation / Foreign LLC)Legal Registration
Articles of IncorporationConstitutive Documents
Articles of Organization (LLC)Constitutive Documents
LLC Operating AgreementConstitutive Documents
IRS EIN Confirmation Letter (CP 575 / 147C)Tax Registration
Guam Business License (showing GRT Account Number)Tax Registration
Guam Business LicenseOperating Permit
Register of Shareholders / Register of MembersOwnership Records
Register of Directors and OfficersGovernance Records
Guam Sworn Annual Report (Director and Officer Listing)Governance Records
Board ResolutionSigning Authority
Power of AttorneySigning Authority
Utility Bill (not older than 90 days)Address
Bank Statement (not older than 90 days)Address
Lease AgreementAddress
Certificate of Good StandingGood Standing
Sector-Specific LicenseBanking Licence — Commissioner of Banking and Insurance, Guam Foreign Exchange / Money Transmitter Licence, Insurance Company Certificate of Authority / Producer Licence, Securities Dealer / Broker Licence

Collection notes

  • Legal Registration: Issued by the DRT General Licensing and Registration Branch upon acceptance of the formation document filing under Title 18 GCA. For corporations: Certificate of Incorporation (Articles filed under Title 18 GCA Chapter 2; 100fee).ForLLCs:CertificateofOrganization(ArticlesofOrganizationfiledunderTitle18GCAChapter15;100 fee). For LLCs: Certificate of Organization (Articles of Organization filed under Title 18 GCA Chapter 15; 250 fee). For limited partnerships: Certificate of Limited Partnership. For foreign entities: Certificate of Authority (Title 18 GCA §7101). All entities must also obtain a Guam Business License before commencing operations. Sworn Annual Reports filed annually with DRT (due July 1–September 1, $100 fee) list directors/officers and registered agent; failure to file results in dissolution or cancellation of Certificate of Authority.
  • Constitutive Documents: For corporations: Articles of Incorporation filed with DRT under Title 18 GCA Chapter 2 (§28205); must include company name, purpose, registered office, registered agent, authorized shares, incorporators, and initial directors/officers. For LLCs: Articles of Organization filed under Title 18 GCA Chapter 15; must include LLC name, duration, purpose, registered office, registered agent, capital contributions, and management structure. Operating Agreement (Title 18 GCA Chapter 15) governs internal LLC operations and is standard practice though not legally required to be filed with DRT. For nonprofits: Articles of Incorporation must include name, purpose, principal office, term, and initial directors; corporate term limited to 50 years unless amended (§18-210 GCA). All articles are retained in the DRT filing record.
  • Tax Registration: Guam is an unincorporated US territory; federal tax law applies. The IRS issues an EIN Confirmation Letter (CP 575 or 147C) as the primary evidence of tax registration. The Guam DRT assigns a GRT Account Number (1–9 digits, no fixed format confirmed) upon issuance of the Business License; the GRT number is printed at the top of the Business License and is used for filing monthly GRT returns (Form GRT-1, Business Privilege Tax). Businesses with gross receipts above the LECSB threshold must file monthly; smaller businesses may qualify for the Limited Exemption for Certain Small Businesses (LECSB). The Business License itself is also treated as evidence of fiscal registration under Guam law.
  • Operating Permit: The Guam Business License is mandatory for all businesses operating in Guam, issued by the DRT General Licensing and Registration Branch (1240 Army Drive, Barrigada, Guam 96913). All corporations, LLCs, partnerships, joint ventures, and associations must register and obtain a Business License prior to commencing operations; sole proprietors also require a Business License. The Business License must be renewed annually (online via GuamTax.com). The license displays the GRT Account Number. For foreign entities, a Certificate of Authority must be obtained before a Business License is issued. Professional service providers (healthcare, cosmetology, contractors, attorneys, CPAs, insurance, real estate, securities, engineers, architects, surveyors) must obtain approval from their respective professional boards before DRT issues the Business License.
  • Sector-Specific License: The DRT Regulatory Division — specifically the Insurance, Securities, Banking and Real Estate Branch — issues and oversees sector-specific licences in Guam. Key licences: (1) Banking licence under Title 11 GCA Division 4 — supervised by the Commissioner of Banking and Insurance (DRT); (2) Foreign Exchange / Money Transmitter Licence under Title 11 GCA Chapter 109 — required for any person transmitting money to foreign countries or domestically within the US via instrument drawn on the recipient; minimum 50,000suretybondand50,000 surety bond and 50,000 net worth; $500 application fee; issued by Commissioner of Banking and Insurance; (3) Insurance Company / Producer Licence under Title 22 GCA Chapter 15 — insurance rates must be filed at least 45 days before effective date; Guam transitioned to State Based Systems (SBS/NAIC) effective March 20, 2024; National Producer Number (NPN) serves as licence number; (4) Securities dealer/broker licence under DRT Regulatory Division; (5) Real estate broker/salesperson licence under the Real Estate Licensing Division of DRT. The Banking and Insurance Board (Commissioner as Chairman, nine Governor-appointed members) has regulatory authority over banking and insurance matters.
  • Governance Records: Every Guam corporation must maintain at its principal office a list of current directors and officers with their names, addresses, and terms of office. The Sworn Annual Report filed annually with DRT (due July 1–September 1 under Title 18 GCA Chapter 4, §4304) includes contact information for directors/officers and the registered agent; these annual reports are on record with DRT but are not publicly searchable online. LLC annual reports list managers (not members). Directors must be natural persons.
  • Signing Authority: No statutory prescribed form under Guam law. A board resolution on company letterhead — signed by a majority of directors and certified by the corporate secretary — is the standard instrument authorizing a named signatory to act on behalf of a Guam corporation. For LLCs, the equivalent is a Manager’s Resolution or Member’s Consent. A notarized Power of Attorney is used for external delegation. No mandatory notarization requirement for board resolutions under Guam law, but notarization is recommended for international use.
  • Address: No statutory form prescribed for KYB address verification. Standard practice follows US territory norms: lease agreement (no fixed time limit) OR utility bill OR bank statement dated within 90 days of submission. Common utility providers in Guam include the Guam Power Authority (GPA) and Guam Waterworks Authority (GWA). The document must show the company’s registered or principal operating address in Guam.
  • Good Standing: Issued by the DRT General Licensing and Registration Branch for corporations, LLCs, and partnerships in active standing. Confirms the entity is validly registered and that its Sworn Annual Report obligations and associated fees are current. Requested directly from DRT (1240 Army Drive, Barrigada, Guam 96913, or by mail). Entities that have failed to file their Sworn Annual Report within 60 days after the September 1 deadline are subject to a $50 late fee and risk administrative dissolution under Title 18 GCA; such entities cannot obtain a Certificate of Good Standing until all outstanding obligations are cleared. Foreign entities may present a certificate of good standing from their home jurisdiction as part of the Certificate of Authority application.

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.
Local roleCanonical API roleDescription
DirectorCONTROLLING_PERSONAppointed officer of a Guam corporation responsible for governance; must be a natural person; names and addresses included in the Sworn Annual Report filed with DRT annually (due July 1–September 1).
ManagerCONTROLLING_PERSONManages a manager-managed LLC under Title 18 GCA Chapter 15; names disclosed in LLC Sworn Annual Reports filed with DRT. For member-managed LLCs, the managing member(s) exercise control.
Officer (President / Secretary / Treasurer)LEGAL_REPRESENTATIVEExecutive officers of a Guam corporation; included in the Sworn Annual Report filed with DRT; responsible for day-to-day operations and signing on behalf of the entity.
Authorized Signatory / Power of Attorney HolderLEGAL_REPRESENTATIVEIndividual authorized by board resolution or notarized power of attorney to act on behalf of the company; authority flows from corporate documents and any delegation instrument under Guam law.

Notes

  • Guam is an unincorporated organized territory of the United States under the Organic Act of Guam 1950 (48 U.S.C. § 1421). Federal law (including the Internal Revenue Code, Bank Secrecy Act, and most US statutes) applies directly; businesses use federal EINs and are subject to federal AML/BSA requirements. There is no separate Guam-issued TIN.
  • All business entity registrations (corporations, LLCs, partnerships) and the mandatory Guam Business License are filed with and issued by the Guam Department of Revenue and Taxation (DRT). The DRT is both the company registry and the tax authority; there is no separate Secretary of State or Companies Registrar.
  • The Guam Business License is mandatory for all businesses and must be obtained before commencing operations. It displays the GRT Account Number used for monthly Gross Receipts Tax (Business Privilege Tax) filings (Form GRT-1). The Business License must be renewed annually via GuamTax.com or in person.
  • The Sworn Annual Report is due between July 1 and September 1 each year for all corporations (domestic and foreign) and LLCs under Title 18 GCA Chapter 4, §4304. Filing fee: 100forcorporations/LLCs,100 for corporations/LLCs, 10 for nonprofits. Failure to file within 60 days of the due date triggers a $50 late fee and risk of administrative dissolution or cancellation of Certificate of Authority.
  • Foreign corporations and foreign LLCs must obtain a Certificate of Authority from the DRT Director before transacting business in Guam (Title 18 GCA §7101). Required documents include a certified copy of the home-jurisdiction articles of incorporation and a certificate of good standing from the home jurisdiction. Foreign LLPs must register with DRT within 30 days of commencing business.
  • The DRT Regulatory Division issued all Guam insurance entities new Company Numbers effective March 18, 2024. Insurance licensing (individual and entity) migrated to State Based Systems (SBS/NAIC) effective March 20, 2024; National Producer Numbers (NPNs) serve as the licence number for individual insurance producers.
  • The Foreign Exchange / Money Transmitter Licence (Title 11 GCA Chapter 109) is issued by the Commissioner of Banking and Insurance within DRT. Any person transmitting money to foreign countries or within the US via instruments drawn on the transmitting party must obtain this licence; minimum 50,000suretybondand50,000 surety bond and 50,000 net worth; $500 application fee.
  • FinCEN CTA domestic-entity exemption (effective March 26, 2025, 90 FR 13688) removed BOI reporting requirements for all US-territory-formed entities including Guam entities. Guam qualifies as a ‘State’ under 31 U.S.C. § 5336. Shareholder and member information is therefore not available from any public Guam registry; internal records must be requested from the entity directly.
  • Guam’s corporate term for nonprofit corporations is limited to 50 years unless amended (GCA §18-210). This is an operational gotcha for long-lived nonprofits that must track and renew their corporate existence.