Mark a tax as the default for its type

Set a visible tax as your company's default for its category (vat, retention or surcharge) in every compatible document type; only your configuration changes. - Inactive taxes return 422 tax_inactive_cannot_be_default; non-defaultable ones 422 tax_not_defaultable_for_document. - If the category is off in all compatible types, 422 tax_default_axis_disabled.

Authorization

AuthorizationBearer <token>

Your API key as a bearer token: fact_live_… in production, fact_test_… in sandbox. See the authentication guide.

In: header

Path Parameters

company*string

Public identifier (UUID v7) of the company. Get it from GET /v1/me (data.scope[].id).

Formatuuid

tax*string

Public identifier (UUID v7) of the tax.

Formatuuid

Headers

Idempotency-Key?string

Client-generated opaque key (up to 255 characters; UUID v7 recommended) that makes retries safe: the first response is cached and replayed for repeats without re-executing the mutation. Reusing a key with a different body returns 422 idempotency_key_reused; the values of secret fields (password, secret…) count as part of the body, so retrying with a corrected secret under the same key is a different request, never the replay of the earlier answer. See the Idempotency guide.

Length1 <= length <= 255

Factuarea-Version?string

Pin the API version (YYYY-MM-DD, Stripe-style date versioning) for this request; omit to use the key's pinned version, or the latest if none. Unsupported version → 400 unsupported_api_version; malformed → 400 parameter_invalid_format. The effective version is echoed in the Factuarea-Version response header. See the Versioning guide.

Formatdate

Response Body

`application/json`

Request example

const apiKey = process.env.FACTUAREA_API_KEY;if (!apiKey) throw new Error("Set FACTUAREA_API_KEY");const response = await fetch("https://api.factuarea.com/v1/companies/01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8a01/taxes/01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8a01/set-default", {  method: "POST",  headers: { Authorization: `Bearer ${apiKey}`, ...{"Accept":"application/json","Idempotency-Key":"erp-2026-public-api-v1-taxes-set_default"} },});if (!response.ok) throw new Error(await response.text());if (response.status !== 204) console.log(await response.json());

Response example

{
  "data": {
    "id": "01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8a0f",
    "object": "tax",
    "name": "IVA general 21%",
    "code": "IVA21",
    "rate": 21,
    "type": "vat",
    "applies_to": "both",
    "country": "ES",
    "is_default": true,
    "is_active": true,
    "is_system": true,
    "ownership": "global",
    "description": "IVA general aplicable en territorio peninsular y Baleares.",
    "default_for_documents": {
      "invoice": true,
      "quote": true,
      "delivery_note": true,
      "proforma": true,
      "purchase_invoice": true,
      "recurring_invoice": true
    },
    "customer_visible_label": "IVA 21%",
    "external_reference": "S1",
    "valid_from": "2012-09-01",
    "valid_until": null,
    "reverse_charge": false,
    "country_aeat_zone": "peninsula",
    "indirect_tax_regime": "iva",
    "linked_surcharge_taxes_id": "01931b3e-7c4a-7f2e-9a8b-3c5d6e7f8a10",
    "metadata": {
      "erp_code": "IVA-GEN",
      "ledger_account": "477000"
    },
    "created_at": "2024-01-01T00:00:00Z",
    "updated_at": "2024-01-01T00:00:00Z"
  }
}

Retired X-Active-Profile header sent

{
  "error": {
    "type": "invalid_request_error",
    "code": "parameter_unknown",
    "subcode": "retired_active_profile_header",
    "message": "La cabecera 'X-Active-Profile' fue retirada de la API v1: la empresa efectiva se indica en el segmento de empresa de la ruta.",
    "param": "X-Active-Profile",
    "doc_url": "https://docs.factuarea.com/guides/errors#parameter_unknown",
    "request_id": "req_01J8Y3M2Q40000000000000001"
  }
}

Malformed Factuarea-Version header

{
  "error": {
    "type": "invalid_request_error",
    "code": "parameter_invalid_format",
    "message": "El header 'Factuarea-Version' debe tener formato YYYY-MM-DD.",
    "param": "Factuarea-Version",
    "doc_url": "https://docs.factuarea.com/guides/errors#parameter_invalid_format",
    "request_id": "req_01J8Y3M2Q40000000000000002"
  }
}

Unsupported Factuarea-Version

{
  "error": {
    "type": "invalid_request_error",
    "code": "unsupported_api_version",
    "message": "La versión de API '2020-01-01' no está soportada.",
    "param": "Factuarea-Version",
    "doc_url": "https://docs.factuarea.com/guides/errors#unsupported_api_version",
    "request_id": "req_01J8Y3M2Q40000000000000003"
  }
}

{
  "error": {
    "type": "authentication_error",
    "code": "missing_api_key",
    "message": "Falta header Authorization o X-API-Key.",
    "doc_url": "https://docs.factuarea.com/guides/errors#missing_api_key",
    "request_id": "req_302e0f5c87abe7b67356e20c96"
  }
}

POST /v1/companies/{company}/taxes/{tax}/set-default · 403 insufficient_scope

{
  "error": {
    "type": "authorization_error",
    "code": "insufficient_scope",
    "message": "Esta operación requiere el scope 'taxes:write'. Tu API key solo tiene los scopes: ninguno.",
    "doc_url": "https://docs.factuarea.com/guides/errors#insufficient_scope",
    "request_id": "req_b6f2a8bd5f884833b515b09f77"
  }
}

Company deactivated

{
  "error": {
    "type": "authorization_error",
    "code": "company_inactive",
    "message": "Esta empresa está desactivada. Actívala para operar.",
    "param": "company",
    "doc_url": "https://docs.factuarea.com/guides/errors#company_inactive",
    "request_id": "req_01J8Y3M2Q40000000000000005"
  }
}

POST /v1/companies/{company}/taxes/{tax}/set-default · 404 tax_not_found

{
  "error": {
    "type": "not_found_error",
    "code": "tax_not_found",
    "message": "Impuesto no encontrado.",
    "doc_url": "https://docs.factuarea.com/guides/errors#tax_not_found",
    "request_id": "req_199f4d67782a7558bdb309ec63"
  }
}

Company not found or outside the API key scope

{
  "error": {
    "type": "not_found_error",
    "code": "profile_not_found",
    "message": "La empresa indicada no existe o no está en el ámbito de tu credencial.",
    "param": "company",
    "doc_url": "https://docs.factuarea.com/guides/errors#profile_not_found",
    "request_id": "req_01J8Y3M2Q40000000000000004"
  }
}

Parameter failed validation

{
  "error": {
    "type": "invalid_request_error",
    "code": "parameter_invalid",
    "message": "El campo `name` es obligatorio y no puede estar vacío.",
    "param": "name",
    "doc_url": "https://docs.factuarea.com/guides/errors#parameter_invalid",
    "request_id": "req_01HKQS5NGS8Z3T6Q1D2E7FYVSI"
  }
}

Invalid Idempotency-Key format

{
  "error": {
    "type": "invalid_request_error",
    "code": "invalid_param_format",
    "message": "La Idempotency-Key debe tener entre 1 y 255 caracteres ASCII printable.",
    "param": "Idempotency-Key",
    "doc_url": "https://docs.factuarea.com/guides/errors#invalid_param_format",
    "request_id": "req_01HKQS5NIDEMPKEYFORMAT0007"
  }
}

Idempotency key reused with different body

{
  "error": {
    "type": "idempotency_error",
    "code": "idempotency_key_reused",
    "message": "La Idempotency-Key 'order-2026-0001' ya se usó con un payload distinto.",
    "param": "Idempotency-Key",
    "doc_url": "https://docs.factuarea.com/guides/errors#idempotency_key_reused",
    "request_id": "req_01HKQS5NHT9A4U7R2E3F8GZWTJ"
  }
}

{
  "error": {
    "type": "rate_limit_error",
    "code": "rate_limit_exceeded",
    "message": "Has excedido el límite de requests permitido. Reintenta más tarde.",
    "doc_url": "https://docs.factuarea.com/guides/errors#rate_limit_exceeded",
    "request_id": "req_2e81fcf622e77609a5c1e1f497"
  }
}

{
  "error": {
    "type": "api_error",
    "code": "internal_error",
    "message": "Algo se rompió en nuestro lado al procesar la petición. La condición no la provoca tu payload.",
    "doc_url": "https://docs.factuarea.com/guides/errors#internal_error",
    "request_id": "req_1891353681e3ac97a3e41c9e37"
  }
}

Mark a tax as the default for its type

Authorization

Path Parameters

Headers

Response Body

200application/json

400application/json

401application/json

403application/json

404application/json

422application/json

429application/json

500application/json

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`

`application/json`