jp bonus net derived

{
  "input": {
    "body": {
      "bonus_yen": 800000,
      "prefecture": "tokyo",
      "previous_month_after_si_yen": 300000
    },
    "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-bonus-net",
      "as_of": "2026-08-21",
      "result": {
        "net_yen": 640672,
        "bonus_yen": 800000,
        "total_yen": 117520,
        "health_yen": 39400,
        "pension_yen": 73200,
        "income_tax_yen": 41808,
        "health_base_yen": 800000,
        "_carried_forward": [],
        "pension_base_yen": 800000,
        "taxable_base_yen": 682480,
        "long_term_care_yen": 0,
        "standard_bonus_yen": 800000,
        "social_insurance_yen": 117520,
        "child_care_support_yen": 920,
        "income_tax_unavailable": null,
        "employment_insurance_yen": 4000,
        "withholding_rate_percent": 6.126
      },
      "sample": true,
      "sources": [
        "https://jsite.mhlw.go.jp/yamanashi-roudoukyoku/koyouhoken_R8.html",
        "https://www.kyoukaikenpo.or.jp/about/business/insurance_rate/rate_prefectures/r08/index.html",
        "https://www.kyoukaikenpo.or.jp/assets/R8_13tokyo.pdf",
        "https://www.nenkin.go.jp/service/kounen/hokenryo/ryogaku/ryogakuhyo/20200825.files/R08ryougaku.pdf",
        "https://www.nta.go.jp/publication/pamph/gensen/zeigakuhyo2026/data/15-16.pdf"
      ],
      "summary": "賞与800,000円 -> 手取り640,672円(社会保険117,520円・源泉所得税41,808円/率6.126%)",
      "billable": true,
      "breakdown": [
        {
          "total_yen": 117520,
          "health_yen": 39400,
          "pension_yen": 73200,
          "health_base_yen": 800000,
          "_carried_forward": [],
          "pension_base_yen": 800000,
          "long_term_care_yen": 0,
          "standard_bonus_yen": 800000,
          "child_care_support_yen": 920,
          "employment_insurance_yen": 4000
        }
      ],
      "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": [
        "labor insurance の業種別特例(建設・農林以外)",
        "乙欄・丙欄",
        "健康保険組合(協会けんぽ以外)",
        "厚生年金基金・企業年金",
        "国民健康保険・国民年金",
        "年の中途の年末調整",
        "従たる給与",
        "日額表",
        "産休育休免除・随時改定(月変)・定時決定の細目"
      ],
      "sample_input": {
        "bonus_yen": 800000,
        "prefecture": "tokyo",
        "previous_month_after_si_yen": 300000
      },
      "rules_version": "2026.08.18",
      "carried_forward": [],
      "unverified_rules": []
    },
    "description": "JSON: bonus net pay, premiums, withholding rate + tax, summary, sources"
  }
}