jpskill.com
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taxhacker

Self-hosted AI accounting tool that analyzes receipts, invoices, and bank transactions using LLMs. Use when: automating personal/business bookkeeping, categorizing expenses with AI, preparing tax documents, building self-hosted financial tools.

⚡ おすすめ: コマンド1行でインストール(60秒)

下記のコマンドをコピーしてターミナル(Mac/Linux)または PowerShell(Windows)に貼り付けてください。 ダウンロード → 解凍 → 配置まで全自動。

🍎 Mac / 🐧 Linux 
mkdir -p ~/.claude/skills && cd ~/.claude/skills && curl -L -o taxhacker.zip https://jpskill.com/download/15457.zip && unzip -o taxhacker.zip && rm taxhacker.zip
🪟 Windows (PowerShell) 
$d = "$env:USERPROFILE\.claude\skills"; ni -Force -ItemType Directory $d | Out-Null; iwr https://jpskill.com/download/15457.zip -OutFile "$d\taxhacker.zip"; Expand-Archive "$d\taxhacker.zip" -DestinationPath $d -Force; ri "$d\taxhacker.zip"

完了後、Claude Code を再起動 → 普通に「動画プロンプト作って」のように話しかけるだけで自動発動します。

💾 手動でダウンロードしたい(コマンドが難しい人向け)
  1. 1. 下の青いボタンを押して taxhacker.zip をダウンロード
  2. 2. ZIPファイルをダブルクリックで解凍 → taxhacker フォルダができる
  3. 3. そのフォルダを C:\Users\あなたの名前\.claude\skills\(Win)または ~/.claude/skills/(Mac)へ移動
  4. 4. Claude Code を再起動
⬇ .zip でダウンロード(推奨) ⬇ .skill 形式(上級者用) 元のソース ↗

⚠️ ダウンロード・利用は自己責任でお願いします。当サイトは内容・動作・安全性について責任を負いません。

🎯 このSkillでできること

下記の説明文を読むと、このSkillがあなたに何をしてくれるかが分かります。Claudeにこの分野の依頼をすると、自動で発動します。

📦 インストール方法 (3ステップ)

  1. 1. 上の「ダウンロード」ボタンを押して .skill ファイルを取得
  2. 2. ファイル名の拡張子を .skill から .zip に変えて展開(macは自動展開可)
  3. 3. 展開してできたフォルダを、ホームフォルダの .claude/skills/ に置く
    • · macOS / Linux: ~/.claude/skills/
    • · Windows: %USERPROFILE%\.claude\skills\

Claude Code を再起動すれば完了。「このSkillを使って…」と話しかけなくても、関連する依頼で自動的に呼び出されます。

詳しい使い方ガイドを見る →
最終更新
2026-05-18
取得日時
2026-05-18
同梱ファイル
1
📖 Claude が読む原文 SKILL.md(中身を展開)

この本文は AI(Claude)が読むための原文(英語または中国語)です。日本語訳は順次追加中。

TaxHacker

Overview

Self-hosted AI accountant for freelancers, indie hackers, and small businesses. Upload receipts, invoices, or bank statements — the LLM extracts, categorizes, and stores everything in a structured database. Supports multi-currency with historical exchange rates and exports accountant-ready CSV reports.

Source: vas3k/TaxHacker (3.9k+ stars)

Instructions

1. Deploy with Docker

curl -O https://raw.githubusercontent.com/vas3k/TaxHacker/main/docker-compose.yml
docker compose up -d

The stack includes TaxHacker app, PostgreSQL, and Redis for background job processing. Access the UI at http://localhost:8000.

2. Configure AI provider

# In .env
AI_PROVIDER=openai              # openai, google, mistral
AI_MODEL=gpt-4o
OPENAI_API_KEY=sk-...
SECRET_KEY=your-random-secret-key
Provider Models Best For
OpenAI GPT-4o, GPT-4o-mini Best accuracy for complex invoices
Google Gemini Gemini Pro, Flash Good cost/quality balance
Mistral Mistral Large, Small EU data residency

3. Upload documents

Drop photos of receipts, invoice PDFs, or bank statement CSVs into the web UI. The AI extraction pipeline:

  1. OCR for images, text extraction for PDFs
  2. LLM identifies vendor, date, amount, currency, line items, tax
  3. Auto-categorizes into configurable categories
  4. Stores structured data in PostgreSQL

4. Import bank statements

Go to Settings → Import, upload your bank's CSV export, map columns (date, description, amount, currency), and AI auto-categorizes each transaction.

5. Generate tax reports

Filter transactions by date range, category, project, or currency. Export to CSV for your accountant.

Examples

Example 1: Freelancer quarterly tax prep

A freelancer in Berlin uploads 3 months of receipts and a Sparkasse bank statement CSV:

Upload: 47 receipt photos + bank_statement_Q1_2024.csv
→ AI processes all documents in background (~2 minutes)
→ 142 transactions categorized:
  - Software & Subscriptions: €1,847.00 (23 transactions)
  - Travel & Transport: €2,341.50 (18 transactions)
  - Office & Supplies: €456.00 (6 transactions)
  - Professional Services: €3,200.00 (4 transactions)
→ Export → CSV filtered by Q1 2024
→ Send to accountant for Umsatzsteuer filing

Example 2: Multi-currency invoice processing

An indie hacker invoicing clients in USD, EUR, and GBP:

Invoice: €1,250.00 from French client (2024-03-15)
→ Converted: $1,362.50 @ 1.0900 EUR/USD (historical rate)

Invoice: £800.00 from UK client (2024-03-20)
→ Converted: $1,016.00 @ 1.2700 GBP/USD (historical rate)

Bank deposit: $2,378.50 matched to both invoices
→ Category: Income — Client Revenue
→ Project: Auto-assigned based on invoice metadata

TaxHacker supports 170+ currencies and 14 cryptocurrencies with historical exchange rates.

Example 3: Custom AI extraction fields

Configure a "Tax Deductible" field with a custom AI prompt:

Custom prompt: "Analyze this expense. Is it deductible for a freelance
software developer in Germany? Answer: Yes (100%), Partial (50%), or No.
Consider: office supplies, software, hardware, professional development
are fully deductible. Meals are 70% deductible."

Receipt: Hetzner Cloud — €23.40/month server hosting
→ Tax Deductible: Yes (100%)
→ Category: Software & Subscriptions

Receipt: Restaurant dinner with client — €87.50
→ Tax Deductible: Partial (70%)
→ Category: Food & Entertainment

Guidelines

  • Batch upload — Drop multiple receipts at once; they queue and process in background
  • Custom prompts per field dramatically improve accuracy for your specific documents and tax jurisdiction
  • Quarterly exports — Set a calendar reminder to export each quarter for your accountant
  • Backup regularly — docker compose exec db pg_dump taxhacker > backup.sql
  • Production deployment — Use Hetzner VPS (CX22, ~$5/month) with Caddy/nginx for HTTPS
  • Requires an LLM API key (OpenAI, Google, or Mistral) — no built-in local model yet
  • OCR accuracy depends on receipt quality — crumpled or faded receipts may need manual correction
  • Not a replacement for double-entry bookkeeping software — designed for freelancer/indie hacker workflows

References