german-tax-data

List the available hand-verified German municipal tax/fee datasets (Hundesteuer, Zweitwohnungsteuer, Pfändung), their coverage, source sites and refresh cadence. Call this first to see what you can query.

{
  "type": "object",
  "properties": {},
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Look up the German dog tax (Hundesteuer) for a city: annual rate for one or more dogs, listed-dog (Listenhund) surcharge, the city's pricing model, its rank among the largest cities, plus the official source and Stand. Rates verified against each municipal Satzung.

{
  "type": "object",
  "properties": {
    "city": {
      "type": "string",
      "description": "City name or slug, e.g. \"Köln\", \"muenchen\", \"Frankfurt\""
    },
    "dogs": {
      "default": 1,
      "description": "Number of dogs (default 1)",
      "type": "integer",
      "minimum": 1,
      "maximum": 10
    },
    "listed": {
      "default": false,
      "description": "Treat as a listed/dangerous-breed dog (Listenhund) if the city has a higher rate",
      "type": "boolean"
    }
  },
  "required": [
    "city"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Ranking of German cities by Hundesteuer (first dog, per year): most expensive or cheapest, plus the national average across the covered cities.

{
  "type": "object",
  "properties": {
    "limit": {
      "default": 10,
      "description": "How many cities to return",
      "type": "integer",
      "minimum": 1,
      "maximum": 100
    },
    "order": {
      "default": "expensive",
      "type": "string",
      "enum": [
        "expensive",
        "cheapest"
      ]
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Average German dog tax (Hundesteuer, first dog per year) per Bundesland (federal state), aggregated over the covered largest cities — the data behind the Deutschlandkarte. Answers 'which German state has the highest/lowest dog tax'. Note: a mean over cities, not an official state rate (the tax is municipal).

{
  "type": "object",
  "properties": {},
  "$schema": "http://json-schema.org/draft-07/schema#"
}

List German cities that changed their Hundesteuer (dog tax) rate in a given year — the fresh-news angle for the annual city comparison. Only 2026 is curated, and it is the default: 14 of the covered cities changed their rate, led by Köln (174 EUR), Lübeck (156 EUR), Lünen (156 EUR). Also returns outlook_2027: 5 cities that have announced or resolved an increase for 2027 but are NOT yet charging it — announced and in force are kept apart deliberately. Every entry checked individually against the municipal statute.

{
  "type": "object",
  "properties": {
    "year": {
      "default": 2026,
      "type": "integer",
      "minimum": 2020,
      "maximum": 2030
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Look up the German second-home tax (Zweitwohnungsteuer) for a city: whether the city levies it, the rate and its basis (net cold rent etc.), the rank among cities, official source and Stand. Optionally pass a monthly cold rent to get the annual tax. Returns state = keine_steuer | berechenbar | sondermodell.

{
  "type": "object",
  "properties": {
    "city": {
      "type": "string",
      "description": "City name or slug, e.g. \"Stuttgart\", \"muenchen\", \"Konstanz\""
    },
    "monthly_rent": {
      "default": null,
      "description": "Monthly cold rent (Kaltmiete) in EUR, to compute the annual tax (only for computable cities)",
      "anyOf": [
        {
          "type": "number",
          "minimum": 0
        },
        {
          "type": "null"
        }
      ]
    }
  },
  "required": [
    "city"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Ranking of German cities by Zweitwohnungsteuer rate: highest or lowest, plus the average, count with a computable rate, and count of cities with no second-home tax.

{
  "type": "object",
  "properties": {
    "limit": {
      "default": 10,
      "description": "How many cities to return",
      "type": "integer",
      "minimum": 1,
      "maximum": 120
    },
    "order": {
      "default": "expensive",
      "type": "string",
      "enum": [
        "expensive",
        "cheapest"
      ]
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

List German cities that changed (raised or newly introduced) their Zweitwohnungsteuer in a given year — the fresh-news angle. Only 2026 is curated, and it is the default: 12 cities changed their rate, led by Potsdam (25 %), Borkum (22 %), Stuttgart (20 %). Every entry checked individually against the municipality's own statute.

{
  "type": "object",
  "properties": {
    "year": {
      "default": 2026,
      "type": "integer",
      "minimum": 2020,
      "maximum": 2030
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Average German second-home tax (Zweitwohnungsteuer) rate in percent per Bundesland (federal state), aggregated over the levying cities with a computable rate — the data behind the Deutschlandkarte. Answers 'which German state has the highest/lowest second-home tax'. Note: a mean over cities, not an official state rate (the tax is municipal).

{
  "type": "object",
  "properties": {},
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Compute the attachable portion of monthly net income under German §850c ZPO (Pfändung / wage garnishment), using the current official Pfändungsfreigrenzenbekanntmachung. Returns attachable amount, remaining amount, exempt base and the P-Konto base. Informational, not legal advice.

{
  "type": "object",
  "properties": {
    "net_income_eur": {
      "type": "number",
      "minimum": 0,
      "description": "Monthly NET income in EUR"
    },
    "dependents": {
      "default": 0,
      "description": "Number of maintenance-dependent persons (0-5)",
      "type": "integer",
      "minimum": 0,
      "maximum": 5
    }
  },
  "required": [
    "net_income_eur"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}