ExpressSteuer (fka Express Group)

ExpressSteuer (formerly Express Group) is a German tax-technology company, originally a Hamburg-based fintech backed by Insight Partners that offered an app-based, largely automated income-tax-return (Steuererklärung) service aimed at consumers and employees. The expresssteuer.de domain currently presents a German-language tax-information and guidance website (built on WordPress) covering income tax, self-employment, and everyday financial topics. No public developer program, API, SDK, or /.well-known/ discovery surface is published. This profile was surfaced as a portfolio company of Insight Partners and added to the API Evangelist network as a company lead for enrichment.

ExpressSteuer (fka Express Group) is profiled on the APIs.io network. Tagged areas include Company, Tax, Taxation, Fintech, and Financial-Services.

ExpressSteuer (fka Express Group)’s developer surface includes engineering blog, support, and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub

8.5/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0

0 APIs

Company TaxTaxationFintech Financial-Services Germany Tax Filing Consumer

Kin Score

Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0

Composite quality — 8.5/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 1.4 / 20

Access Clarity 2.1 / 20

Operational Transparency 0.0 / 13

Contract Governance 0.0 / 12

Discoverability 5.0 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/expresssteuer-fka-express-group: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

Website

Website

Blog

Blog

Impressum

Impressum

Source (apis.yml)

aid: expresssteuer-fka-express-group
name: ExpressSteuer (fka Express Group)
description: ExpressSteuer (formerly Express Group) is a German tax-technology company, originally a Hamburg-based fintech
  backed by Insight Partners that offered an app-based, largely automated income-tax-return (Steuererklärung) service aimed
  at consumers and employees. The expresssteuer.de domain currently presents a German-language tax-information and guidance
  website (built on WordPress) covering income tax, self-employment, and everyday financial topics. No public developer program,
  API, SDK, or /.well-known/ discovery surface is published. This profile was surfaced as a portfolio company of Insight Partners
  and added to the API Evangelist network as a company lead for enrichment.
url: https://raw.githubusercontent.com/api-evangelist/expresssteuer-fka-express-group/refs/heads/main/apis.yml
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://expresssteuer.de/wp-content/uploads/2025/04/expresssteuer-de-fav.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- insight-partners
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Tax
- Taxation
- Fintech
- Financial-Services
- Germany
- Tax Filing
- Consumer
tags_raw:
- Company
- Tax
- Taxation
- Fintech
- Financial Services
- Germany
- Tax Filing
- Consumer
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/expresssteuer-fka-express-group-domain-security.yml
- type: WellKnown
  url: well-known/expresssteuer-fka-express-group-well-known.yml
- type: Website
  url: https://www.expresssteuer.de/
- type: Blog
  url: https://expresssteuer.de/blog/
- type: Support
  url: https://expresssteuer.de/kontakt/
- type: PrivacyPolicy
  url: https://expresssteuer.de/datenschutz/
- type: Impressum
  url: https://expresssteuer.de/impressum/
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence