·invoice-system
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invoice-system

This skill should be used when the user asks about the invoice system (インボイス制度), qualified invoices (適格請求書), registration numbers (登録番号), input tax credits (仕入税額控除), the 20% special measure (2割特例), the 30% special measure (3割特例), tax-exempt businesses (免税事業者), transitional measures (経過措置), small-amount exceptions (少額特例), corrected invoices (修正インボイス), or any related topics. Trigger phrases include: "インボイス", "適格請求書", "登録番号", "仕入税額控除", "2割特例", "3割特例", "免税事業者", "経過措置", "少額特例", "修正インボイス", "返還インボイス", "簡易インボイス", "インボイス登録", "T番号", "適格請求書発行事業者".

165Installs·6Trend·@kazukinagata

Installation

$npx skills add https://github.com/kazukinagata/shinkoku --skill invoice-system

How to Install invoice-system

Quickly install invoice-system AI skill to your development environment via command line

  1. Open Terminal: Open your terminal or command line tool (Terminal, iTerm, Windows Terminal, etc.)
  2. Run Installation Command: Copy and run this command: npx skills add https://github.com/kazukinagata/shinkoku --skill invoice-system
  3. Verify Installation: Once installed, the skill will be automatically configured in your AI coding environment and ready to use in Claude Code, Cursor, or OpenClaw

Source: kazukinagata/shinkoku.

SKILL.md

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適格請求書等保存方式(インボイス制度)に関する包括的な知識ベース。 制度の概要、記載要件、経過措置、仕入税額控除ルール、登録判断を支援する。

インボイス制度(適格請求書等保存方式)は、令和5年(2023年)10月1日に開始された消費税の仕入税額控除に関する制度。課税事業者が仕入税額控除を受けるためには、原則として「適格請求書発行事業者」が発行する「適格請求書(インボイス)」の保存が必要となる。適格請求書発行事業者になるには税務署への登録申請が必要で、登録番号(T+13桁)が付与される。

| 2割特例 | 売上消費税額の20%を納付 | R8.9.30を含む課税期間まで | | 免税事業者仕入控除 | 80%→70%→50%→30%→0% | R11.10.1で完全移行 | | 少額特例 | 税込1万円未満はインボイス不要 | R11.9.30まで | | 少額返還インボイス免除 | 税込1万円未満は返還インボイス不要 | 恒久措置 |

This skill should be used when the user asks about the invoice system (インボイス制度), qualified invoices (適格請求書), registration numbers (登録番号), input tax credits (仕入税額控除), the 20% special measure (2割特例), the 30% special measure (3割特例), tax-exempt businesses (免税事業者), transitional measures (経過措置), small-amount exceptions (少額特例), corrected invoices (修正インボイス), or any related topics. Trigger phrases include: "インボイス", "適格請求書", "登録番号", "仕入税額控除", "2割特例", "3割特例", "免税事業者", "経過措置", "少額特例", "修正インボイス", "返還インボイス", "簡易インボイス", "インボイス登録", "T番号", "適格請求書発行事業者". Source: kazukinagata/shinkoku.

Facts (cite-ready)

Stable fields and commands for AI/search citations.

Install command
npx skills add https://github.com/kazukinagata/shinkoku --skill invoice-system
Category
</>Dev Tools
Verified
First Seen
2026-02-23
Updated
2026-03-10

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Quick answers

What is invoice-system?

This skill should be used when the user asks about the invoice system (インボイス制度), qualified invoices (適格請求書), registration numbers (登録番号), input tax credits (仕入税額控除), the 20% special measure (2割特例), the 30% special measure (3割特例), tax-exempt businesses (免税事業者), transitional measures (経過措置), small-amount exceptions (少額特例), corrected invoices (修正インボイス), or any related topics. Trigger phrases include: "インボイス", "適格請求書", "登録番号", "仕入税額控除", "2割特例", "3割特例", "免税事業者", "経過措置", "少額特例", "修正インボイス", "返還インボイス", "簡易インボイス", "インボイス登録", "T番号", "適格請求書発行事業者". Source: kazukinagata/shinkoku.

How do I install invoice-system?

Open your terminal or command line tool (Terminal, iTerm, Windows Terminal, etc.) Copy and run this command: npx skills add https://github.com/kazukinagata/shinkoku --skill invoice-system Once installed, the skill will be automatically configured in your AI coding environment and ready to use in Claude Code, Cursor, or OpenClaw

Where is the source repository?

https://github.com/kazukinagata/shinkoku

Details

Category
</>Dev Tools
Source
skills.sh
First Seen
2026-02-23