{
  "title": "都道府県別の年間手取りと、最も手取りが多い都道府県との差",
  "appliesTo": "令和8年分（2026年）",
  "healthRateYear": "令和8年度（令和8年3月分〜）",
  "assumptions": [
    "対象年: 令和8年分（2026年）。令和8年度税制改正後の基礎控除・給与所得控除で年間ベースの手取りを計算しています（月々の源泉徴収は令和8年11月まで改正前の税額表で、年末調整で精算されます）",
    "所得税: 課税所得×速算表（国税庁）＋復興特別所得税2.1%。課税所得1,000円未満・年税額100円未満は切捨て",
    "住民税: 同じ所得が続いた場合の概算。所得割10%＋均等割4,000円＋森林環境税1,000円−調整控除2,500円（東京都・単身の場合）。住民税は前年の所得に対して翌年度に課税されます",
    "住民税の非課税限度額は東京23区（1級地）・扶養なし単身の合計所得金額45万円で判定しています（東京都主税局）。この額以下なら所得割・均等割・森林環境税とも0円です。限度額は市区町村が条例で定め、級地区分と扶養人数で変わるため、23区以外や扶養がある場合はこの計算と線がずれます",
    "社会保険: 協会けんぽ（東京支部・令和8年度）の標準報酬月額等級表で計算。健康保険9.85%・介護保険1.62%（40〜64歳）・子ども・子育て支援金0.23%・厚生年金18.3%の労使折半、雇用保険は労働者負担0.5%（一般の事業）",
    "賞与なし（年収を12等分した月収で計算）・扶養なし・単身・給与収入のみの前提です。扶養控除・生命保険料控除などの各種控除は反映していません",
    "都道府県で変わるのは健康保険料率だけです。厚生年金保険料率18.3%・雇用保険料率0.5%（労働者負担・一般の事業）・介護保険料率1.62%・子ども・子育て支援金率0.23%はいずれも全国一律で、協会けんぽの公表ページにもその旨が明記されています",
    "計算はすべて協会けんぽ（全国健康保険協会）に加入している場合のものです。健康保険組合・共済組合・国民健康保険に加入している場合は料率も等級表も別で、この表は当てはまりません",
    "住民税は東京23区（1級地）・扶養なし単身の非課税限度額と税率で計算しています。所得割10%は多くの自治体で共通ですが、均等割の超過課税や非課税限度額の級地区分は自治体ごとに異なるため、都道府県間の差にはこの分が含まれていません"
  ],
  "sources": [
    {
      "name": "協会けんぽ『令和8年度の協会けんぽの保険料率は3月分（4月納付分）から改定されます｜都道府県毎の保険料率』",
      "url": "https://www.kyoukaikenpo.or.jp/about/business/insurance_rate/rate_prefectures/r08/index.html",
      "checkedAt": "2026-07-21"
    },
    {
      "name": "国税庁 タックスアンサー No.2260（所得税の税率）",
      "url": "https://www.nta.go.jp/taxes/shiraberu/taxanswer/shotoku/2260.htm"
    },
    {
      "name": "国税庁 源泉所得税の改正のあらまし（令和8年度税制改正）",
      "url": "https://www.nta.go.jp/publication/pamph/gensen/2026kaisei.pdf"
    },
    {
      "name": "協会けんぽ 保険料額表（東京支部・令和8年3月分〜）",
      "url": "https://www.kyoukaikenpo.or.jp/assets/R8_13tokyo.pdf"
    },
    {
      "name": "日本年金機構（厚生年金保険の保険料）",
      "url": "https://www.nenkin.go.jp/service/kounen/hokenryo/hoshu/20150515-01.html"
    },
    {
      "name": "厚生労働省 令和8年度 雇用保険料率",
      "url": "https://www.mhlw.go.jp/content/001692566.pdf"
    },
    {
      "name": "総務省（個人住民税）",
      "url": "https://www.soumu.go.jp/main_sosiki/jichi_zeisei/czaisei/czaisei_seido/150790_06.html"
    },
    {
      "name": "東京都主税局 個人住民税（非課税限度額）",
      "url": "https://www.tax.metro.tokyo.lg.jp/kazei/life/kojin_ju"
    }
  ],
  "license": "CC BY 4.0",
  "canonical": "https://tedori-monosashi.com/data/todofuken-tedori/",
  "unit": "JPY",
  "prefectureCount": 47,
  "distinctHealthRates": 41,
  "bandsMan": [
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    400,
    500,
    600,
    700,
    800,
    1000
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  "sortedByMan": 500,
  "spreadByBand": [
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      "annualGrossMan": 100,
      "annualGross": 1000000,
      "spread": 7068,
      "unavailableReason": null,
      "highest": {
        "prefecture": "新潟県",
        "slug": "niigata",
        "netAnnual": 848528
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      "lowest": {
        "prefecture": "佐賀県",
        "slug": "saga",
        "netAnnual": 841460
      }
    },
    {
      "annualGrossMan": 120,
      "annualGross": 1200000,
      "spread": 7872,
      "unavailableReason": null,
      "highest": {
        "prefecture": "新潟県",
        "slug": "niigata",
        "netAnnual": 1025884
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      "lowest": {
        "prefecture": "佐賀県",
        "slug": "saga",
        "netAnnual": 1018012
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    },
    {
      "annualGrossMan": 150,
      "annualGross": 1500000,
      "spread": 9128,
      "unavailableReason": null,
      "highest": {
        "prefecture": "新潟県",
        "slug": "niigata",
        "netAnnual": 1269088
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      "lowest": {
        "prefecture": "佐賀県",
        "slug": "saga",
        "netAnnual": 1259960
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    },
    {
      "annualGrossMan": 180,
      "annualGross": 1800000,
      "spread": 10860,
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      "highest": {
        "prefecture": "新潟県",
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        "netAnnual": 1501740
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      "lowest": {
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        "slug": "saga",
        "netAnnual": 1490880
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    },
    {
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      "annualGross": 2000000,
      "spread": 12268,
      "unavailableReason": null,
      "highest": {
        "prefecture": "新潟県",
        "slug": "niigata",
        "netAnnual": 1650852
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      "lowest": {
        "prefecture": "佐賀県",
        "slug": "saga",
        "netAnnual": 1638584
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    },
    {
      "annualGrossMan": 250,
      "annualGross": 2500000,
      "spread": 13680,
      "unavailableReason": null,
      "highest": {
        "prefecture": "新潟県",
        "slug": "niigata",
        "netAnnual": 2048320
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      "lowest": {
        "prefecture": "佐賀県",
        "slug": "saga",
        "netAnnual": 2034640
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    },
    {
      "annualGrossMan": 300,
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      "spread": 17704,
      "unavailableReason": null,
      "highest": {
        "prefecture": "新潟県",
        "slug": "niigata",
        "netAnnual": 2408456
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      "lowest": {
        "prefecture": "佐賀県",
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    },
    {
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      "highest": {
        "prefecture": "新潟県",
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        "netAnnual": 2796880
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      "lowest": {
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      "unavailableReason": null,
      "highest": {
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