# Column Tax

**Canonical:** https://apis.io/providers/column-tax/  
**Website:** https://www.columntax.com/  
**APIs profiled:** 1

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.

## Kin Score — 39.8 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 39.8).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 45.1 |
| Governance | 18.2 |
| Contract Governance | 18.2 |
| Operational Transparency | 10.5 |
| Developer Ergonomics | 46.4 |
| Commercial Clarity | 28.9 |
| Access Clarity | 28.9 |

Regulatory layer — **Banking & Open Finance**: 46.8 (matched via tags).

## Agent readiness — 32.5 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | yes |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (1)

- **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 u...

## MCP servers (1)

- **Column Tax MCP Server**

## Security (2)

- **Column Tax Authentication** — http · 1 scheme
- **Column Tax Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Fintech, Tax, Tax Filing, Embedded Finance, E-File, Financial-Services, Banking, API-First

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/column-tax/). Scores are computed from the provider's own public artifacts under a published rubric.