Documentation Index
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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 (onboarding 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 onboarding 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
| Identifier Type | Format | Example | Notes |
|---|---|---|---|
| Taxpayer Number | 11 digits | 17307175087 | Texas Comptroller’s primary identifier |
| Federal EIN | 9 digits | 730717508 | IRS-assigned Employer Identification Number |
| SOS File Number | 6-10 digits | 0003077806 | Secretary of State registration number |
Identifiers in API Response
| Identifier | Format | Example | Found In |
|---|---|---|---|
taxpayerId | 11 digits | 17307175087 | All entities |
feiNumber | 9 digits | 730717508 | Most entities |
sosFileNumber | 10 digits | 0003077806 | All entities |
stateOfFormation | 2-letter | TX, NJ, DE | All entities |
sosRegistrationStatus | Text | ACTIVE | All entities |
Search Capabilities
| Search Type | Pattern | Example | Match Type | Expected Results |
|---|---|---|---|---|
| By Taxpayer Number | 11 digits | 17307175087 | Exact | Single company |
| By Federal EIN | 9 digits | 730717508 | Exact | Single company |
| By SOS File Number | 6-8 or 10 digits | 0003077806 | Exact | Single company |
| By Name | 2-50 chars | "EXXON MOBIL" | Fuzzy | Multiple results |
9-digit ambiguity. A 9-digit input is treated as a Federal EIN (sent as
taxpayerId). If you need to search by a 9-digit SOS File Number
specifically, this is not currently disambiguated — the EIN interpretation
takes priority.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.Quirks & Gotchas
| Quirk | Details |
|---|---|
| Onboarding mode is non-authoritative | Onboarding mode uses the Comptroller franchise tax system, not the official SOS corporate registry. Verification mode uses the Secretary of State directly and is authoritative. |
| Verification mode: formal entities only | The Secretary of State only registers formal entities (corporations, LLCs, LPs, etc.). Sole traders have no SOS filing number. Verification mode requests for sole-trader taxpayer IDs will not resolve. |
| Company profile requires 11-digit Taxpayer Number | The detail API only accepts the 11-digit Taxpayer Number. EIN and SOS File Number work for search only. Always use the id from search results to fetch company data. |
| No sole proprietors in franchise tax | Sole proprietors are exempt from franchise tax. They are covered via the sales tax fallback and identified by the IS org type code. |
| No legal form in Comptroller live API | The Comptroller live API does not return entity type. In onboarding mode, legal form comes from the open data taxpayer_organizational_type code, with name-suffix extraction as fallback. In verification mode, the SOS entity type string is used directly. |
| Officer titles truncated (onboarding mode) | In onboarding mode, titles from the Comptroller are cut to ~10 characters: VICE PRESIDENT becomes VICE PRESI. AI enrichment standardizes and completes them. In verification mode, titles come directly from the SOS Management tab and are always the full string as filed. |
| HTML entities in titles | Some Comptroller titles contain & instead of & (e.g., PRES & CEO). Decoded automatically. |
| Leading spaces in state | stateOfFormation has a leading space (e.g., TX). Trimmed automatically. |
| Missing detail for some entities | Some entities appear in search but return “not set up for Franchise Tax” on the detail endpoint. These are entities tracked by SOS but not the Comptroller. |
| Registered agent is not a legal representative | Per BOC §5.206, the registered agent’s only duty is to receive and forward legal process. They have no authority to act for the company. Mapped as Other Key Person. |
| Two address types | The Comptroller API returns both mailing address and registered office address. We use the registered office as legalAddress because it’s the official address of record. |
| Two status fields (onboarding mode) | rightToTransactTX = franchise tax standing only. sosRegistrationStatus = corporate status from SOS. We use SOS status as the company status in onboarding mode. In verification mode, status is read directly from the SOS entity page. |
| Officer data depends on report filing (onboarding mode) | In onboarding mode, officer data comes from franchise tax annual reports. Entities that have never filed a report will have zero officers returned, regardless of their actual structure. This includes some large active companies that file under a different entity. Verification mode reads officers directly from the SOS Management tab and is not affected by this. |
Mappings
Company Status
Onboarding mode usessosRegistrationStatus from the Comptroller (which mirrors the SOS), not rightToTransactTX (franchise tax standing).
| Source Value | Mapped Status | Active |
|---|---|---|
ACTIVE | Active | true |
INACTIVE | Inactive | false |
| Other values | As-is | false |
| SOS Status Value | Mapped Status | Active | Notes |
|---|---|---|---|
In existence | In existence | true | Entity is active and in good standing |
Forfeited existence | Forfeited | false | Franchise tax delinquency |
Voluntarily dissolved | Dissolved | false | Entity chose to dissolve |
Merged | Merged | false | Entity was absorbed by another |
Legal Forms
Legal form is sourced differently depending on the request mode. Onboarding 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.
Onboarding: Comptroller organizational type codes
Onboarding: Comptroller organizational type codes
| Code | Legal Form | Standardized | ISO 20275 |
|---|---|---|---|
| CL | Texas Limited Liability Company | Limited Liability Company | WYG5 |
| CI | Foreign Limited Liability Company | Limited Liability Company | WYG5 |
| CT | Texas Profit Corporation | Corporation | C5K7 |
| CF | Foreign Profit Corporation | Corporation | C5K7 |
| CP | Texas Professional Corporation | Corporation | 9AAS |
| CU | Foreign Professional Corporation | Corporation | 9AAS |
| CN | Texas Non-Profit Corporation | Non-Profit Organization | OGSS |
| CM | Foreign Non-Profit Corporation | Non-Profit Organization | |
| PL | Texas Limited Partnership | Partnership | FE1L |
| PF | Foreign Limited Partnership | Partnership | |
| PB | Business General Partnership | Partnership | |
| AP | Texas Professional Association | Corporation | MXWB |
| AF | Foreign Professional Association | Corporation | |
| TR | Trust | Trust | |
| IS | Sole Proprietorship (Individual) | Sole Proprietorship |
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.
| SOS Entity Type | Standardized | ISO 20275 |
|---|---|---|
| Domestic For-Profit Corporation | Corporation | C5K7 |
| Foreign For-Profit Corporation | Corporation | C5K7 |
| Domestic Nonprofit Corporation | Non-Profit Organization | OGSS |
| Foreign Nonprofit Corporation | Non-Profit Organization | |
| Domestic Professional Corporation | Corporation | 9AAS |
| Foreign Professional Corporation | Corporation | 9AAS |
| Domestic Professional Association | Corporation | MXWB |
| Foreign Professional Association | Corporation | |
| Domestic Limited Liability Company (LLC) | Limited Liability Company | WYG5 |
| Foreign Limited Liability Company (LLC) | Limited Liability Company | WYG5 |
| Domestic Professional Limited Liability Company (PLLC) | Limited Liability Company | |
| Foreign Professional Limited Liability Company (PLLC) | Limited Liability Company | |
| Domestic Limited Partnership (LP) | Partnership | FE1L |
| Foreign Limited Partnership (LP) | Partnership | |
| Domestic Limited Liability Partnership | Partnership | |
| Foreign Limited Liability Partnership | Partnership | |
| Domestic Real Estate Investment Trust | Trust | |
| Foreign Real Estate Investment Trust | Trust | |
| Domestic Business Trust | Trust | |
| Foreign Business Trust | Trust | |
| Domestic Cooperative Association | Non-Profit Organization | |
| Foreign Cooperative Association | Non-Profit Organization | |
| Foreign Series Limited Liability Company (LLC) | Limited Liability Company | |
| Foreign Financial Institution | Corporation |
Activity Codes
NAICS codes are sourced from the SODA3 open data API. ISIC Rev.4 and NACE Rev.2 codes are derived from NAICS via the US Census Bureau concordance table (2022 NAICS to ISIC Rev.4, with 2017 fallback for reorganized codes). NACE Rev.2 is identical to ISIC Rev.4 at the 4-digit level.| System | Source | Example |
|---|---|---|
| NAICS | SODA3 open data (franchise or sales tax dataset) | 541330 (Engineering Services) |
| ISIC Rev.4 | US Census concordance from NAICS | 7110 (Architectural and engineering activities) |
| NACE Rev.2 | Identical to ISIC at 4-digit level | 7110 |
Officer Roles
Officers are split into Legal Representatives (statutory authority to bind the company under Texas BOC) and Other Key Persons (operational, financial, or governance roles). In onboarding mode, titles come from franchise tax annual reports via the Comptroller. They are a free-text field, frequently truncated to ~10 characters (e.g. “VICE PRESI”, “GENERAL PA”) and sometimes containing HTML entities (“PRES & CEO”). Because there is no closed list, classification is AI-enriched: all titles for a company are sent in a batch to an AI classifier with Texas-specific corporate law instructions (BOC §3.101 for corporate officers, §101.254 for LLC managers, §153.152 for LP general partners). The AI completes truncated titles, standardizes them, and determines binding authority. In verification mode, titles come directly from the Secretary of State Management tab as the full string as filed (e.g. “VICE PRESIDENT”, “MANAGING MEMBER”). AI enrichment is still applied for standardization, but truncation is not a factor. Registered agents are always classified as Other Key Persons (BOC §5.206: their only duty is to receive and forward legal process).Common Legal Representative titles -- can bind the company
Common Legal Representative titles -- can bind the company
| Title | Standardized | Legal Basis |
|---|---|---|
| PRESIDENT, PRES | President | BOC §3.101 |
| VICE PRESIDENT, VICE PRESI, VP | Vice President | BOC §3.101 |
| SECRETARY | Secretary | BOC §3.101 |
| DIRECTOR | Director | Board member |
| CEO, CHIEF EXECUTIVE OFFICER | Chief Executive Officer | Executive authority |
| MANAGER, MANAGING MEMBER | Manager | BOC §101.254 (LLC) |
| GENERAL PARTNER, GENERAL PA | General Partner | BOC §153.152 (LP/LLP) |
| MANAGING PARTNER | Managing Partner | BOC §153.152 |
| OWNER | Owner | Sole authority |
| GENERAL COUNSEL | General Counsel | Legal authority |
Common Other Key Person titles -- no statutory binding authority
Common Other Key Person titles -- no statutory binding authority
These tables list commonly observed titles. Because the API uses a free-text
field, new or uncommon titles may appear. The AI classifier handles unknown
titles based on Texas corporate law context, defaulting to Other Key Person
when in doubt.
Data Availability
| Data Point | Available | Notes |
|---|---|---|
| Company name | Yes | Legal name + DBA. Verification mode also returns historical names and assumed names from the SOS Names tab. |
| Company status | Yes | Onboarding: SOS registration status from Comptroller mirror (ACTIVE / INACTIVE). Verification: status read directly from SOS (In existence, Forfeited, Dissolved, Merged). |
| Registration date | Yes | SOS effective registration date |
| Legal address | Yes | Registered office address |
| Legal form | Yes | Onboarding: Comptroller organizational type code (29 types, domestic/foreign). Falls back to name-suffix extraction. Verification: Secretary of State entity type string (24 types from Texas BOC). |
| Activity codes | Yes | NAICS from Comptroller open data, with ISIC Rev.4 and NACE Rev.2 derived via US Census concordance table. Onboarding mode only. |
| Share capital | No | Not provided by either source |
| Legal representatives | Yes* | Officers with statutory authority (President, Director, etc.). Onboarding: from Comptroller franchise tax reports, truncated titles, AI-enriched. Verification: from SOS Management tab, full titles. Not available for sole traders. |
| Other key persons | Yes* | Treasurer, CFO, Chairman, Registered Agent, etc. Same sourcing as legal representatives by mode. Not available for sole traders. |
| Registered agent | Yes* | Formal entities only. Onboarding: from Comptroller. Verification: from SOS Registered Agent tab. |
| Establishments | Yes | Branch/location data from Comptroller sales tax permits, with addresses and permit dates. Both modes. |
| Shareholders | No | Not available from either source |
| UBOs | No | Not available from either source |
| Documents | Yes | Information Letter from the Secretary of State for formal entities (corporations, LLCs, limited partnerships). Sales Tax Permit from the Comptroller for all entities with a sales tax permit, including sole traders. Both returned as PDF. |
| Financial data | No | Not provided |
Documents
Information Letter
The Information Letter is an official document issued by the Texas Secretary of State confirming entity status, original filing date, registered agent name and address, and duration. It is the closest equivalent to a trade register extract for Texas.| Property | Value |
|---|---|
| Available for | Formal entities only (corporations, LLCs, limited partnerships, etc.) |
| Not available for | Sole traders — they have no SOS filing number |
| Format | |
| Delivery | Up to 2 hours after request |
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.| Property | Value |
|---|---|
| Available for | All entities with an active or inactive Comptroller sales tax permit |
| Format | |
| Delivery | Under 2 minutes |
Example API Responses
Search by Name
Company Profile (Onboarding 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.