jp retirement tax derived

{
  "input": {
    "body": {
      "payout_yen": 20000000,
      "years_of_service": 30
    },
    "type": "http",
    "method": "POST",
    "bodyType": "json"
  },
  "output": {
    "type": "json",
    "example": {
      "ok": true,
      "note": "SAMPLE RESPONSE generated by the exact deterministic engine that serves production (jp-statutory has no LLM: same input always produces this byte-identical result, carrying the same rules_version and cited primary sources). Served free at /samples/{product} so you can verify the response shape, the rules_version field and the source citations before paying. No payment was taken. The sample_input shown is the catalog example input that produced this output.",
      "tool": "jp-retirement-tax",
      "as_of": null,
      "result": {
        "net_yen": 19594298,
        "taxable_yen": 2500000,
        "deduction_yen": 15000000,
        "half_taxation": true,
        "income_tax_yen": 155702,
        "resident_tax_yen": 250000
      },
      "sample": true,
      "sources": [
        "https://www.nta.go.jp/publication/pamph/gensen/zeigakuhyo2026/data/17-18.pdf",
        "https://www.nta.go.jp/taxes/shiraberu/taxanswer/shotoku/2260.htm",
        "https://www.tax.metro.tokyo.lg.jp/kazei/kojin_ju.html"
      ],
      "summary": "退職金20,000,000円(勤続30年) -> 手取り19,594,298円(退職所得控除15,000,000円・所得税155,702円・住民税250,000円)",
      "billable": true,
      "breakdown": [],
      "disclaimer": "仮定条件に基づく概算試算。税務相談・手続代行・法律相談ではない。申告・届出への使用不可。確定額は官公署または税理士・社会保険労務士等に確認のこと。",
      "assumptions": [],
      "not_covered": [
        "106万円の壁の2026年以降の要件見直し",
        "乙欄・丙欄",
        "住宅ローン控除以外の税額控除",
        "分離課税(株式・不動産譲渡)",
        "合計所得2350万円超の基礎控除逓減",
        "固定残業代の有効性判断",
        "変形労働時間制",
        "年の中途の年末調整",
        "従たる給与",
        "扶養手当等の企業independent基準",
        "日額表",
        "管理監督者の判定",
        "自治体独自の超過課税(横浜市・名古屋市等)",
        "裁量労働制",
        "非居住者・年の中途入退社の年調"
      ],
      "sample_input": {
        "payout_yen": 20000000,
        "years_of_service": 30
      },
      "rules_version": "2026.08.18",
      "carried_forward": [],
      "unverified_rules": []
    },
    "description": "JSON: deduction, taxable, income tax, resident tax, net payout, half-taxation flag"
  }
}