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

10.2/100 minimal ▬ flat Agent 4/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyTaxTaxationFintechFinancial ServicesGermanyTax FilingConsumer

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 10.2/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 1.3 / 20

Commercial Clarity 2.1 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 4/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

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 4 / 4

Consent & Bot Identity 0 / 3

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: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- 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