# Taxfix

**Canonical:** https://apis.io/providers/taxfix/  
**Website:** https://taxfix.de/  
**APIs profiled:** 0

Taxfix is a Berlin-based fintech that lets individuals and self-employed people in Germany prepare and file their annual income tax return from a mobile app or web browser. Users either answer a guided set of roughly 70 questions to self-file (Taxfix Basic) or hand the return to an independent tax expert via the Expert Service, with data transmitted to the tax authority over the official ELSTER interface. The company reports more than 10 million tax returns filed and over 5 billion euros in refunds. Taxfix is a consumer (B2C) product and does not publish a public developer API, developer portal, or API documentation; this profile captures its public identity and domain-security posture. Backed by Creandum, Index Ventures and Speedinvest.

## Kin Score — 12.7 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 12.7).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 7.1 |
| Commercial Clarity | 31.6 |
| Access Clarity | 31.6 |

## Agent readiness — 0.0 (human-only)

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

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (1)

- **Taxfix Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Fintech, Tax, Taxes, Tax Filing, Personal Finance, Germany, Mobile

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