Column Tax

Column Tax API

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.

GitHub

Documentation

📖
Documentation
https://docs.columntax.com/docs/welcome
📖
APIReference
https://docs.columntax.com/v1.1/reference
📖
Authentication
https://docs.columntax.com/reference/authentication

Other Resources

🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/column-tax/refs/heads/main/apis.yml

API entry from apis.yml

apis.yml Raw ↑ 
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