{
  "$comment": "Machine-readable companion to https://valem.run/calculators/france/car-tax. Formula, inputs, outputs, engine-verified test vectors, cited sources and the re-runnable Valem ModelSpec behind the page.",
  "url": "https://valem.run/calculators/france/car-tax",
  "dataUrl": "https://valem.run/calculators/france/car-tax.json",
  "license": {
    "name": "CC BY 4.0",
    "url": "https://creativecommons.org/licenses/by/4.0/",
    "attribution": "France carte grise model by Valem (https://valem.run/calculators/france/car-tax), CC BY 4.0.",
    "note": "Covers the model — the expression of each rule and the arrangement of the catalog. The rates and thresholds themselves are law and are not licensed by anyone; the cited sources are where they come from."
  },
  "verificationUrl": "https://valem.run/calculators/france/car-tax/verify",
  "country": "france",
  "countryName": "France",
  "formula": "car-tax",
  "formulaName": "Carte grise",
  "title": "Cout Carte Grise — France registration cost",
  "answer": "France has no annual car ownership tax; the cost people pay is the carte grise — the regional tax per fiscal horsepower plus fixed fees.",
  "lang": "en",
  "currency": "EUR",
  "taxYear": "2026",
  "verification": {
    "claim": "internal-consistency",
    "statement": "The Valem engine reproduces this model's stated formula through 3 self-test cases (below, and re-runnable against the spec). That asserts internal consistency, NOT that the formula matches current law — the cited sources are the evidence for that, and carry the date each was last checked.",
    "selfTestCases": 3,
    "ratesAreIllustrative": false,
    "sourcesCheckedOn": "2026-08-02"
  },
  "sources": [
    {
      "label": "Coût de la carte grise — service-public.fr",
      "url": "https://www.service-public.fr/particuliers/vosdroits/F19211",
      "checked": "2026-08-02"
    },
    {
      "label": "Malus écologique — service-public.fr",
      "url": "https://www.service-public.fr/particuliers/vosdroits/F35947",
      "checked": "2026-08-02"
    }
  ],
  "terminalOutput": "total",
  "inputs": [
    {
      "name": "fiscalCV",
      "type": "number",
      "label": "Puissance fiscale (CV)",
      "minimum": 0
    },
    {
      "name": "region",
      "type": "string",
      "label": "Région"
    },
    {
      "name": "customRate",
      "type": "number",
      "label": "Tarif si « Autre » (EUR / CV)",
      "minimum": 0
    }
  ],
  "outputs": [
    {
      "name": "regionalRate",
      "type": "number",
      "label": "Tarif régional (EUR/CV)",
      "formula": "($s := region; $s = 'IDF' ? $const.rateIDF : $s = 'ARA' ? $const.rateARA : $s = 'OCC' ? $const.rateOCC : $s = 'BRE' ? $const.rateBRE : $s = 'NOR' ? $const.rateNOR : customRate)"
    },
    {
      "name": "taxeRegionale",
      "type": "number",
      "label": "Taxe régionale",
      "format": "currency",
      "formula": "$round(fiscalCV * regionalRate, 2)"
    },
    {
      "name": "fraisFixes",
      "type": "number",
      "label": "Frais fixes (gestion + acheminement)",
      "format": "currency",
      "formula": "$round((fiscalCV >= 0 ? $const.redevanceGestion + $const.acheminement : 0), 2)"
    },
    {
      "name": "total",
      "type": "number",
      "label": "Coût carte grise",
      "format": "currency",
      "formula": "$round(taxeRegionale + fraisFixes, 2)"
    }
  ],
  "testCases": [
    {
      "description": "C1 5 CV at 51 EUR/CV",
      "given": {
        "fiscalCV": 5,
        "region": "autre",
        "customRate": 51
      },
      "expect": {
        "taxeRegionale": 255,
        "fraisFixes": 13.76,
        "total": 268.76
      }
    },
    {
      "description": "C2 7 CV at 51 EUR/CV",
      "given": {
        "fiscalCV": 7,
        "region": "autre",
        "customRate": 51
      },
      "expect": {
        "taxeRegionale": 357,
        "total": 370.76
      }
    },
    {
      "description": "C3 5 CV en Île-de-France — le tarif régional le plus élevé de France",
      "given": {
        "fiscalCV": 5,
        "region": "IDF"
      },
      "expect": {
        "regionalRate": 68.95,
        "taxeRegionale": 344.75,
        "total": 358.51
      }
    }
  ],
  "spec": {
    "id": "car-tax-france",
    "version": "1.0.0",
    "schema": {
      "type": "object",
      "properties": {
        "fiscalCV": {
          "type": "number",
          "minimum": 0
        },
        "region": {
          "type": "string"
        },
        "customRate": {
          "type": "number",
          "minimum": 0
        },
        "regionalRate": {
          "type": "number",
          "readOnly": true
        },
        "taxeRegionale": {
          "type": "number",
          "readOnly": true
        },
        "fraisFixes": {
          "type": "number",
          "readOnly": true
        },
        "total": {
          "type": "number",
          "readOnly": true
        }
      }
    },
    "constants": {
      "redevanceGestion": 11,
      "acheminement": 2.76,
      "rateIDF": 68.95,
      "rateARA": 43,
      "rateOCC": 58,
      "rateBRE": 60,
      "rateNOR": 60
    },
    "defaultValues": [
      {
        "path": "$",
        "expr": "{'fiscalCV': 5, 'region': 'ARA', 'customRate': 51}"
      }
    ],
    "derivations": [
      {
        "path": "$.regionalRate",
        "expr": "($s := region; $s = 'IDF' ? $const.rateIDF : $s = 'ARA' ? $const.rateARA : $s = 'OCC' ? $const.rateOCC : $s = 'BRE' ? $const.rateBRE : $s = 'NOR' ? $const.rateNOR : customRate)"
      },
      {
        "path": "$.taxeRegionale",
        "expr": "$round(fiscalCV * regionalRate, 2)"
      },
      {
        "path": "$.fraisFixes",
        "expr": "$round((fiscalCV >= 0 ? $const.redevanceGestion + $const.acheminement : 0), 2)"
      },
      {
        "path": "$.total",
        "expr": "$round(taxeRegionale + fraisFixes, 2)"
      }
    ],
    "constraints": [],
    "metaDerivations": [],
    "viewDefinition": {
      "renderer": "builtin",
      "defaultView": "main",
      "views": [
        {
          "id": "main",
          "label": "Carte grise",
          "layout": "vertical",
          "components": [
            {
              "id": "cv",
              "type": "numericField",
              "label": "Puissance fiscale (CV)",
              "bind": "$.fiscalCV"
            },
            {
              "id": "region",
              "type": "selectField",
              "label": "Région",
              "bind": "$.region",
              "helperText": "Le tarif du cheval fiscal est fixé par la région. Choisissez la vôtre, ou « Autre » pour saisir le tarif.",
              "options": [
                {
                  "value": "IDF",
                  "label": "Île-de-France — 68,95 €/CV"
                },
                {
                  "value": "ARA",
                  "label": "Auvergne-Rhône-Alpes — 43,00 €/CV"
                },
                {
                  "value": "OCC",
                  "label": "Occitanie — 58,00 €/CV"
                },
                {
                  "value": "BRE",
                  "label": "Bretagne — 60,00 €/CV"
                },
                {
                  "value": "NOR",
                  "label": "Normandie — 60,00 €/CV"
                },
                {
                  "value": "autre",
                  "label": "Autre région — saisir le tarif"
                }
              ]
            },
            {
              "id": "rate",
              "type": "numericField",
              "label": "Tarif si « Autre » (EUR / CV)",
              "bind": "$.customRate"
            },
            {
              "id": "tiles",
              "type": "group",
              "layout": "horizontal",
              "components": [
                {
                  "id": "totalTile",
                  "type": "statTile",
                  "label": "Coût carte grise",
                  "bind": "$.total",
                  "format": "currency",
                  "currency": "EUR"
                }
              ]
            },
            {
              "id": "breakdown",
              "type": "keyValueList",
              "label": "Détail",
              "items": [
                {
                  "label": "Tarif régional (EUR/CV)",
                  "bind": "$.regionalRate"
                },
                {
                  "label": "Taxe régionale",
                  "bind": "$.taxeRegionale",
                  "format": "currency",
                  "currency": "EUR"
                },
                {
                  "label": "Frais fixes (gestion + acheminement)",
                  "bind": "$.fraisFixes",
                  "format": "currency",
                  "currency": "EUR"
                },
                {
                  "label": "Total",
                  "bind": "$.total",
                  "format": "currency",
                  "currency": "EUR"
                }
              ]
            },
            {
              "id": "note",
              "type": "staticText",
              "text": "'France : pas de taxe annuelle sur les voitures particulières. Le coût de la carte grise = taxe régionale par cheval fiscal + frais fixes. Un malus CO2 s applique à l achat des véhicules les plus émetteurs. Estimation, pas un conseil fiscal. Tarifs 2026 : Île-de-France 68,95 (dont 14 EUR de taxe Île-de-France Mobilités), Auvergne-Rhône-Alpes 43,00, Occitanie 58,00, Bretagne et Normandie 60,00 EUR/CV. Hausse moyenne de 2,4 % en 2026.'"
            },
            {
              "id": "sources",
              "type": "sourceList",
              "label": "Sources",
              "items": [
                {
                  "label": "Coût de la carte grise — service-public.fr",
                  "url": "https://www.service-public.fr/particuliers/vosdroits/F19211",
                  "date": "2026-08-02"
                },
                {
                  "label": "Malus écologique — service-public.fr",
                  "url": "https://www.service-public.fr/particuliers/vosdroits/F35947",
                  "date": "2026-08-02"
                }
              ]
            }
          ]
        }
      ]
    },
    "tests": [
      {
        "description": "C1 5 CV at 51 EUR/CV",
        "given": {
          "$.fiscalCV": 5,
          "$.region": "autre",
          "$.customRate": 51
        },
        "expect": {
          "$.taxeRegionale": 255,
          "$.fraisFixes": 13.76,
          "$.total": 268.76
        }
      },
      {
        "description": "C2 7 CV at 51 EUR/CV",
        "given": {
          "$.fiscalCV": 7,
          "$.region": "autre",
          "$.customRate": 51
        },
        "expect": {
          "$.taxeRegionale": 357,
          "$.total": 370.76
        }
      },
      {
        "description": "C3 5 CV en Île-de-France — le tarif régional le plus élevé de France",
        "given": {
          "$.fiscalCV": 5,
          "$.region": "IDF"
        },
        "expect": {
          "$.regionalRate": 68.95,
          "$.taxeRegionale": 344.75,
          "$.total": 358.51
        }
      }
    ]
  }
}