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Roadmap

MVP — build now (24–48h)

Goal: publicly deployable demo, no credit card, fully functional.

F1 · Semantic Search over BMF-Schreiben

  • Natural language text input in German
  • Vector search + LLM answer generation
  • Source citation per answer: date, Aktenzeichen, Steuerart, clickable PDF link

F2 · Automatic Data Updates

  • Daily cron job scrapes new BMF-Schreiben from bundesfinanzministerium.de
  • Only new documents are processed (URL + version as dedup key)
  • No manual maintenance required

F3 · Filter by Steuerart

  • Dropdown: Einkommensteuer · Umsatzsteuer · Körperschaftsteuer · Lohnsteuer · All
  • Scopes vector search to selected category

F4 · Transparency

  • Total indexed documents + last update date visible in UI
  • Each answer shows sources with relevance score
  • Prominent disclaimer on every page

F5 · Responsive UI

  • Mobile-first, React, clean minimal design
  • No login, no registration — works immediately

Later

N1 · Topic Subscriptions & Email Notifications

User subscribes to topics and receives email when new BMF-Schreiben are published in that area.

Suggested topics:

  • Homeoffice / Arbeitszimmer
  • Kryptowährungen / digitale Assets
  • E-Auto / Firmenwagen
  • GmbH-Gründung / Körperschaftsteuer
  • Umsatzsteuer / E-Rechnung
  • Erbschaft- und Schenkungsteuer
  • Photovoltaik

Requires: user account (email only), Resend or SendGrid free tier.

N2 · Change Tracking

When a BMF-Schreiben supersedes or amends an earlier one, link them.

  • "This ruling supersedes: [link]"
  • "Superseded by: [link]"

Requires: parsing "Bezug" and "Betreff" fields in BMF documents.

N3 · Date Range Filter

Scope search to: last year · last 2 years · from date · to date. Already prepared by metadata storage.

N4 · Related Documents

"Related BMF-Schreiben" section under each answer. Based on vector similarity between documents, not keywords.

N5 · Multilingual

Ask questions in English, receive answers in German or English. Useful for international companies operating in Germany.

N6 · Public GraphQL API / Playground

Public Apollo Studio playground for developers. Demonstrates technical depth, useful as a portfolio signal.

N7 · Steuerart Overview Pages

Per Steuerart: document count, most recent date, most referenced paragraphs. Entry point for users without a specific question.

N8 · BFH Case Law (long-term)

The Bundesfinanzhof publishes rulings publicly. Combining BMF-Schreiben + BFH case law would be significant added value over existing tools. Separate project — considerably higher complexity.

N9 · Timeline/Changelog-Ansicht

Chronologische Übersicht aller BMF-Schreiben-Änderungen, damit Nutzer sehen können was sie verpasst haben. Requires bulk ingestion corpus.

N10 · Themen-Tags

Automatische Klassifizierung nach populären Steuer-Themen (Homeoffice, Dienstwagen, Abschreibungen, Fahrtkosten, E-Fahrzeuge etc.) via LLM-Klassifizierung während der Ingestion.

N11 · "Mehr laden"

Pagination der Suchergebnisse wenn Nutzerdaten zeigen dass mehr als 5 Quellen gewünscht werden.

Planned Features

N12 — BFH-Urteile Integration

Extend the ingestion pipeline to cover rulings from the Bundesfinanzhof (BFH).

  • Source: https://www.bundesfinanzhof.de/de/entscheidung/entscheidungen-online/
  • Same audience as BMF-Schreiben (Steuerberater, Wirtschaftsprüfer)
  • Directly complementary: BMF-Schreiben state the administration's position, BFH-Urteile show where courts have ruled differently
  • Requires: separate ingest script, BFH-specific chunking strategy (Leitsatz + Gründe), extended GraphQL schema with source field distinguishing BMF vs BFH results
  • Filter pill in UI: "BMF-Schreiben" | "BFH-Urteile" | "Alle"
  • Priority: post-launch, after real usage data confirms demand