withholding-tax SKILL.md skillA
withholding-tax from tahodev/kurashi-skill is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add tahodev/kurashi-skill/withholding-tax@git:20261012.307c400Pins git:20261012.307c400 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- tahodev/kurashi-skill
- Path
withholding-tax/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261012.307c400, committed Oct 12, 2026
- First version recorded
- Oct 2, 2026
- Size
- 7,665 bytes
- Repository stars
- 4
- License
- MIT
毎月の給与から引かれる源泉所得税(月額表の甲欄)の目安を、国税庁が公表する電算機計算の特例の式で計算する。社会保険料等控除後の月給と扶養人数から税額を出し、令和8年分(2026年支給分)と令和9年分(2027年支給分)の違いも示せる。年末調整・賞与・乙欄・日額表・住民税は対象外。税額表の金額と一致しないことがある点を必ず伝える。.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# withholding-tax 月給から天引きされる源泉所得税(月額表の甲欄)の目安を計算するスキル。外部APIは使わず、国税庁が公表している計算式だけで求める。 **基準日: 2026-10-03。以下の式・金額は同日に国税庁の公開PDFで確認したもの。** ## 何が計算できるか 扶養控除等申告書を出している人の毎月の給与(月額表の甲欄)。入力は2つ: - **社会保険料等控除後の給与等の金額**(額面ではない。額面から健康保険・厚生年金・雇用保険料などを引いた後) - **源泉控除対象配偶者 + 源泉控除対象親族の人数**(本人が障害者・ひとり親などに当たる場合は該当ごとに1人加算) ```bash python3 withholding-tax/lookup.py --salary 175000 --dependents 2 # 令和8年分(既定) python3 withholding-tax/lookup.py --salary 300000 --dependents 0 --year 2027 # 令和9年分 ``` ## 計算式(財務省告示の特例、令和8年分) 1. 課税給与所得金額(B) = 給与等(A) − 給与所得控除 − 31,667円×人数 − 基礎控除 2. 給与所得控除: A≦158,333 → 54,167円 / ≦299,999 → A×30%+6,667 / ≦549,999 → A×20%+36,667 / ≦708,330 → A×10%+91,667 / それ以上 → 162,500円(1円未満切り上げ) 3. 基礎控除: A≦2,120,833 → 48,334円 / ≦2,162,499 → 40,000 / ≦2,204,166 → 26,667 / ≦2,245,833 → 13,334 / それ以上 → 0 4. 税額: B≦162,500 → B×5.105% / ≦275,000 → B×10.210%−8,296 / ≦579,166 → B×20.420%−36,374 / ≦750,000 → B×23.483%−54,113 / ≦1,500,000 → B×33.693%−130,688 / ≦3,333,333 → B×40.840%−237,893 / それ以上 → B×45.945%−408,061(10円未満四捨五入) **令和9年分で変わるのは2か所だけ(2026-10-03実測):** 給与所得控除の下限が54,167円→57,500円(第1区分の上限も158,333→169,444)、基礎控除の最大が48,334円→51,667円。第2表(31,667円)と第4表の税率は同じ。 根拠(国税庁): …
Read the whole file at its exact version.
How to install
mdr add tahodev/kurashi-skill/withholding-tax@sha256:0a2a0c631eeb631eThe line at the top of this page pins the label git:20261012.307c400, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_nhw3u7hjjcehlwv3)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Oct 2, 2026 and Oct 12, 2026, about one every 5 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261012.307c400 latest | 2026-10-12 | 307c400 | 7,665 B | A | view · diff |
| git:20261002.37f396a | 2026-10-02 | 37f396a | 7,664 B | A | view · diff |
| git:20261002.64e22f0 | 2026-10-02 | 64e22f0 | 7,664 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (7665 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
tahodev/kurashi-skill · 4 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_nhw3u7hjjcehlwv3 GET https://markdownregistry.com/api/v1/resolve?ref=tahodev/kurashi-skill/withholding-tax GET https://markdownregistry.com/api/v1/blob/0a2a0c631eeb631e1bae188a01e9f6ee42e21f1352c0ab39dbfb468d536266d8
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.