aid: column-tax
name: Column Tax
description: 'Column Tax is an IRS-authorized, API-first tax filing platform that lets banks, brokerages,
  neobanks, and SMB/freelancer fintech apps embed a full white-label income-tax preparation and e-file
  experience directly inside their own product. Partners create a Column Tax user via a server-side REST
  call, receive a short-lived authenticated URL, and launch the Column Tax UI (web loader or native iOS,
  Android, and React Native SDKs) embedded in their app, while webhooks report each user through the
  filing lifecycle. Column Tax offers DIY Filing and Expert Review products, is a SOC 2-certified and
  IRS-authorized e-file provider, and reports outcomes such as higher retention and direct-deposit
  switching for embedded partners.'
url: https://raw.githubusercontent.com/api-evangelist/column-tax/refs/heads/main/apis.yml
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://cdn.prod.website-files.com/6262ffa3aeadc15ee876298b/627bf917c708fc0ec6460fcb_Text_Image.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- bain-capital-ventures
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Fintech
- Tax
- Tax Filing
- Embedded Finance
- E-File
- Financial Services
- Banking
- API First
apis:
- name: Column Tax API
  description: 'REST API to embed IRS-authorized income-tax preparation and e-filing. Create a Column
    Tax user, obtain a short-lived authenticated URL to launch the embedded filing UI, list a user''s
    tax returns and jurisdictions, and subscribe to webhook events across the filing lifecycle.'
  humanURL: https://docs.columntax.com/v1.1/reference
  baseURL: https://prod.columnapi.com
  tags:
  - Tax
  - E-File
  - Embedded Finance
  properties:
  - type: Documentation
    url: https://docs.columntax.com/docs/welcome
  - type: APIReference
    url: https://docs.columntax.com/v1.1/reference
  - type: Authentication
    url: https://docs.columntax.com/reference/authentication
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/column-tax-domain-security.yml
- type: Website
  url: https://www.columntax.com/
- type: DeveloperPortal
  url: https://docs.columntax.com/docs/welcome
- type: Documentation
  url: https://docs.columntax.com/docs/welcome
- type: APIReference
  url: https://docs.columntax.com/v1.1/reference
- type: GettingStarted
  url: https://docs.columntax.com/docs/quick-start
- type: Quickstart
  url: https://docs.columntax.com/docs/quick-start
- type: Authentication
  url: https://docs.columntax.com/reference/authentication
- type: Support
  url: https://www.columntax.com/contact-us
- type: Blog
  url: https://www.columntax.com/blog
- type: GitHubOrganization
  url: https://github.com/column-tax
- type: StatusPage
  url: https://status.columntax.com
- type: TermsOfService
  url: https://www.columntax.com/terms-of-use
- type: PrivacyPolicy
  url: https://www.columntax.com/privacy-policy
- type: Packages
  url: packages/column-tax-packages.yml
- type: SDKs
  url: packages/column-tax-packages.yml
- type: LLMsTxt
  url: llms/column-tax-llms.txt
- type: Authentication
  url: authentication/column-tax-authentication.yml
- type: Conventions
  url: conventions/column-tax-conventions.yml
- type: ErrorCatalog
  url: errors/column-tax-problem-types.yml
- type: Lifecycle
  url: lifecycle/column-tax-lifecycle.yml
- type: Conformance
  url: conformance/column-tax-conformance.yml
- type: Compliance
  url: conformance/column-tax-conformance.yml
- type: MCPServer
  url: mcp/column-tax-mcp.yml
- type: Sandbox
  url: sandbox/column-tax-sandbox.yml
- type: Webhooks
  url: asyncapi/column-tax-webhooks.yml
- type: DataModel
  url: data-model/column-tax-data-model.yml
- type: Components
  url: components/column-tax-components.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence