Tax invoice credit context
Skill kazukinagata/shinkoku/skills/tax-invoice-credit-context
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.From its SKILL.md
npx -y skills add kazukinagata/shinkoku --skill tax-invoice-credit-contextAssembled from the repository path, not quoted from the project. Check it against their README if it does not work.
SKILL.md
1.6 KB, 466 tokens by cl100k_base, as published. Nobody here has run it
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:
- 原則（適格請求書＋帳簿の保存）を確認して案内する
- 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
- 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
- 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
- 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 |
What ships with it: 1 file
6.5 KB alongside SKILL.md
references/
Gives 0 of the 12 instructions most finance skills give in 466 tokens
Counted across 469 of the 469 authors here whose files we hold, read 2026-08-07
- Extract date vendor amount and descriptionin 15 of 469, across 3 files
- Scan folder for invoice filesin 14 of 469, across 2 files
- Rename files to standard formatin 14 of 469, across 2 files
- Show organization plan before movingin 14 of 469, across 2 files
- Generate summary CSVin 14 of 469, across 2 files
- Organize files by categoryin 13 of 469, across 1 file
- Preserve original filesin 13 of 469, across 1 file
- Flag files missing critical infoin 13 of 469, across 1 file
- Produce the requested output filein 9 of 469, across 4 files
- Build best, base, and worst case scenariosin 9 of 469, across 5 files
- Implement backoff if rate limit errors occurin 8 of 469, across 3 files
- Determine the weighted average cost of capitalin 8 of 469, across 4 files
Said here and by no other author read
- read the input tax credit rules file
- guide on the principle of saving qualifying invoices and books
- check applicability of the six permanent exceptions
- guide on transitional deduction rates for exempt business purchases
- explain deduction methods based on taxable sales ratio
- guide on the seven-year storage period
Grouped from the skills themselves: near-identical wordings counted once, and counted by distinct author, so one author publishing three of these counts once. Length counted with cl100k_base; the agent that loads this file may tokenize it differently.