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Tax Invoice Credit Context

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Background context for invoice-system input tax credit rules (仕入税額控除) in the shinkoku tax filing plugin. Contains eligibility requirements, the 6 permanent exceptions (帳簿のみ保存の恒久特例), transitional measures for purchases from tax-exempt businesses, and storage requirements. This skill is not user-invocable — Claude loads it automatically when responding to input tax credit questions under the invoice system.

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  • Added May 26, 2026
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A100/100

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Scanned May 27, 2026

npx -y skills add kazukinagata/shinkoku --skill tax-invoice-credit-context --agent claude-code

Installs into .claude/skills of the current project.

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SKILL.md
---
name: tax-invoice-credit-context
description: >
  Background context for invoice-system input tax credit rules (仕入税額控除)
  in the shinkoku tax filing plugin. Contains eligibility requirements,
  the 6 permanent exceptions (帳簿のみ保存の恒久特例), transitional measures
  for purchases from tax-exempt businesses, and storage requirements.
  This skill is not user-invocable — Claude loads it automatically when
  responding to input tax credit questions under the invoice system.
user-invocable: false
---

# インボイス仕入税額控除コンテキスト(Input Tax Credit Context)

このスキルはインボイス制度における仕入税額控除の要件・例外に関するコンテキストを提供する。

## 仕入税額控除の情報提供

仕入税額控除に関する回答を行う際は、`references/input-tax-credit-rules.md` を読み込んで以下を実行する:

1. 原則(適格請求書+帳簿の保存)を確認して案内する
2. 帳簿のみ保存の恒久特例6類型(公共交通機関・自販機・郵便等)への該当を確認する
3. 免税事業者からの仕入れに係る経過措置の控除率(80%→70%→50%→30%→0%)を案内する
4. 課税売上割合に応じた控除方式(全額控除・個別対応方式・一括比例配分方式)を説明する
5. 保存期間(7年間)と電子取引データ保存の要件を案内する

## 参照ファイル

| ファイル | 内容 |
|---------|------|
| `references/input-tax-credit-rules.md` | 仕入税額控除の原則・帳簿記載要件・恒久特例6類型・経過措置・課税売上割合と控除方式 |

Files in this skill

  • SKILL.md1.6 KB
  • references/input-tax-credit-rules.md6.5 KB

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