# Column Tax API

**Canonical:** https://apis.io/apis/column-tax/column-tax-api/  
**Provider:** Column Tax — https://apis.io/providers/column-tax/  
**Base URL:** https://prod.columnapi.com  
**Documentation:** https://docs.columntax.com/v1.1/reference

Column Tax API is published by [Column Tax](https://apis.io/providers/column-tax/) on the [APIs.io](https://apis.io/) network. Tagged areas include Tax, E-File, and Embedded Finance. The published artifact set on APIs.io includes API documentation, an API reference, and authentication docs.

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.

## Machine-readable artifacts (4)

- **Documentation** — https://docs.columntax.com/docs/welcome
- **APIReference** — https://docs.columntax.com/v1.1/reference
- **Authentication** — https://docs.columntax.com/reference/authentication
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/column-tax/refs/heads/main/apis.yml

## Tags

Tax, E-File, Embedded Finance

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/column-tax/column-tax-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/column-tax/.