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This guide contains public integration notes for Texas. Use it for identifier formats, search behavior, and country-specific caveats. The live source of truth for coverage, pricing, data sources, documents, legal forms, roles, and status values is the pricing page.Texas coverage, pricing, and sources
Open the current catalog for supported datapoints, documents, sources, identifiers, and availability.
Country details below are preserved as integration notes. If a table or example conflicts with the live pricing page, use the pricing page as the source of truth and contact support.
Table of Contents
- Data Sources
- Company Identifiers
- Search Capabilities
- Quirks & Gotchas
- Mappings
- Data Availability
- Documents
Data Sources
Texas uses three data sources depending on the request mode and entity type. Texas Comptroller of Public Accounts (prefill mode)- Franchise Tax API (primary source). Covers entities set up for franchise tax under Tax Code Chapter 171: corporations, LLCs, LPs, LLPs, professional associations, and other entities doing business in Texas. ~3.4M taxpayers. Provides company name, registered office address, SOS registration status, state of formation, officer/director information, and registered agent details. Equivalent open dataset: Active Franchise Tax Permit Holders.
- Sales Tax Payer API (fallback + establishments). Covers holders of a sales tax permit under Tax Code Chapter 151, Subchapter F. This includes any person or entity authorized to collect sales tax on tangible personal property, including sole traders. Provides business name, individual name (for sole traders), address, permit status, and outlet locations (establishments) with addresses and permit dates. Equivalent open dataset: Active Sales Tax Permit Holders.
In prefill mode, franchise tax is tried first (richer data with officers
and registered agent). If the entity is not found there (sole traders,
entities not set up for franchise tax), it falls back to sales tax
automatically. Establishments are always fetched from the sales tax endpoint.
Company Identifiers
Query Identifiers
Identifiers in API Response
Legal Entity Identifier (LEI)
GLEIF is the supplementary data source for this identifier.company.identifiers.lei is returned when sosFileNumber has a unique match against Texas Secretary of State registration or validation references in GLEIF. The padded and unpadded spellings of the SOS number are equivalent for this match. Taxpayer numbers and federal EINs are excluded.
An LEI (Legal Entity Identifier) has 20 uppercase letters and digits, ending in two check digits.
Coverage varies by entity. The field is omitted when no unambiguous match is available. Lapsed or retired LEIs may be returned; annulled records are excluded.
Search Capabilities
SOS File Number. Pass it zero-padded (
0803367205) or as the Secretary of State displays it (803367205); both resolve. A 9-digit input is read as an SOS File Number. Search by the Federal EIN is not supported.Name search is prefix-based. Searching for
"TOPOGRAPH" returns all
entities whose name starts with or contains that string, including
TOPOGRAPHIC OM, INC., TOPOGRAPH LLC, etc.Active companies only
Search can return companies that are no longer active.activeOnly=true removes those whose status is known at search time; the others are kept. Lookups by taxpayer number are filtered. Name searches and file-number lookups may still include inactive companies, because most of their results carry no status.
Quirks & Gotchas
Mappings
Company Status
Prefill mode usessosRegistrationStatus from the Comptroller (which mirrors the SOS), not rightToTransactTX (franchise tax standing).
Verification mode reads entity status directly from the Secretary of State.
Legal Forms
Legal form is sourced differently depending on the request mode. Prefill mode uses the Comptroller’staxpayer_organizational_type code, a closed 2-letter set defined in the Franchise Layout record layout, fetched from the Comptroller open data API. It distinguishes domestic vs foreign entities (e.g. CT Texas Profit Corporation vs CF Foreign Profit Corporation) and covers types not detectable from names (nonprofits, associations, trusts, joint ventures). Falls back to name-suffix extraction (BOC §5.054-§5.063) when the open data lookup returns no result.
Verification mode uses the entity type field from the Secretary of State register directly. The SOS uses the full English description from the Texas Business Organizations Code — a closed set of 24 types organized as Domestic/Foreign pairs (e.g. “Domestic Limited Liability Company (LLC)”, “Foreign For-Profit Corporation”). Source: Texas BOC forms index.
Prefill: Comptroller organizational type codes
Prefill: Comptroller organizational type codes
Verification: Secretary of State entity types (24 types from Texas BOC)
Verification: Secretary of State entity types (24 types from Texas BOC)
Domestic entities are formed under Texas law; foreign entities are registered to do business in Texas. The parenthetical abbreviation (LLC), (LP), (PLLC) is part of the official SOS display string.
Activity Codes
NAICS codes are sourced from the Texas Comptroller open data. ISIC Rev. 5 codes are derived from NAICS through the US Census Bureau concordance table (NAICS to ISIC Rev. 4), chained with the official ISIC Rev. 4 to Rev. 5 correspondence. NACE Rev. 2.1 codes are derived from the ISIC code through a correspondence table; they are not a copy of it.Officer Roles
Both sources report the most recently filed management appointments. Known titles use the published role catalogue, including retained source abbreviations; unfamiliar titles are interpreted with their source context. A filed office does not specify a sole or joint signing rule.
Explicit compound offices are preserved separately, including a vice president who also serves as secretary. Incomplete abbreviations do not invent an unreported second title. Corporate holders retain their identity and available address; a US contact address does not establish domicile. For foreign entities, the governing law and source appointment determine authority. The published formation jurisdiction takes precedence over a generic LLC or partnership label. Where that jurisdiction is missing, a generic form alone does not establish Texas agency. Uncertain formatted addresses retain their source text without an assumed country; a corporate registered agent’s Texas office does not establish its formation country.
Data Availability
Documents
Information Letter
The Information Letter is an official document issued by the Texas Secretary of State. It states the entity’s name, type, jurisdiction, file number, filing date and status, the registered agent and registered office address, the assumed name certificates on file, and the managerial officials with their titles and addresses. It is the closest equivalent to a trade register extract for Texas.Sales Tax Permit
The Sales Tax Permit is the official Comptroller record confirming permit status, mailing address, and all outlet locations. For sole traders it is the primary official government record confirming their business registration.Example API Responses
Search by Name
Company Profile (Prefill Mode)
Sole Trader (Sales Tax Fallback)
Sole traders are not in the franchise tax system. Data comes from the sales tax payer API.Sole traders are identified by the
IS (Individual Sole Owner) organizational
type code from the SODA3 open data API. No officers or registered agent data
is available for sole traders.