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API ReferenceEndpointsPublic API (v1)Update a tax class

Update a tax class

Updates a tax class. The default class cannot be un-set directly: make another class the default instead. Supports Idempotency-Key header for safe retries.

PATCH
/v1/tax-classes/{id}

Authorization

AuthorizationBearer <token>

Admin API key (server-to-server). Issue via the dashboard at Settings → API keys. Plain-text key is shown once — store in a secret manager. Format: Authorization: Bearer brainerce_xxxxxxxxx.

In: header

Path Parameters

idstring

Tax Class ID

Header Parameters

Idempotency-Key?string

Client-supplied key (a UUID v4 is the recommended form, max 255 characters) that makes this mutation safe to retry.

  • Replay window: 24 hours. The first response for a key is cached; a retry inside the window with the same request body returns the original status and body without re-running the handler.
  • Reusing a key with a different body returns 409 Conflict with code: "IDEMPOTENCY_KEY_REUSED". The request fingerprint (method + path + body hash) is compared against the stored one; a mismatch is refused rather than served the old response.
  • Keys are scoped to the calling credential and store — two API keys may safely use the same key value.
  • Error responses are cached too, so a retry of a request that failed validation returns the same 400 immediately.
  • Sending this header on a GET returns 400 with code: "IDEMPOTENCY_KEY_NOT_SUPPORTED" — GETs are already idempotent.
  • Support is per-route and this parameter is the authoritative signal: a key sent to a route that does not declare it is accepted and silently ignored.

See /docs/api/idempotency.

Lengthlength <= 255

Request Body

name?string

Tax class display name. 1 to 100 characters.

Length1 <= length <= 100
slug?string

URL-safe identifier, unique per store. Lowercase letters, numbers and hyphens only.

Match^[a-z0-9-]+$
description?string

Free-text note about when to use this class.

isDefault?boolean

Make this the default tax class of the store. The previous default is unset. Defaults to false.

Defaultfalse
curl -X PATCH "https://api.brainerce.com/api/v1/tax-classes/string" \  -H "Idempotency-Key: string" \  -H "Content-Type: application/json" \  -d '{}'
{
  "id": "clx1a2b3c4d5e6f7g8h9",
  "accountId": "clx1a2b3c4d5e6f7g8h9",
  "storeId": "clx1a2b3c4d5e6f7g8h9",
  "name": "Reduced rate",
  "slug": "reduced-rate",
  "description": "Reduced rate for food",
  "isDefault": true,
  "metadata": {},
  "createdAt": "2019-08-24T14:15:22Z",
  "updatedAt": "2019-08-24T14:15:22Z"
}

{
  "statusCode": 400,
  "code": "VALIDATION_FAILED",
  "message": "name should not be empty, price must be a positive number",
  "timestamp": "2026-08-23T10:15:00.000Z",
  "path": "/api/v1/tax-classes/{id}"
}

{
  "statusCode": 401,
  "code": "UNAUTHORIZED",
  "message": "Invalid or expired credential",
  "timestamp": "2026-08-23T10:15:00.000Z",
  "path": "/api/v1/products/bulk/{jobId}"
}

{
  "statusCode": 403,
  "code": "INSUFFICIENT_SCOPE",
  "message": "API key does not have the required scope: products:write",
  "timestamp": "2026-08-23T10:15:00.000Z",
  "path": "/api/v1/tax-classes/{id}"
}

{
  "statusCode": 404,
  "code": "RESOURCE_NOT_FOUND",
  "message": "Resource not found",
  "timestamp": "2026-08-23T10:15:00.000Z",
  "path": "/api/v1/tax-classes/{id}"
}

{
  "statusCode": 409,
  "code": "CONFLICT",
  "message": "The request conflicts with the current state of the resource",
  "timestamp": "2026-08-23T10:15:00.000Z",
  "path": "/api/v1/tax-classes/{id}"
}

{
  "statusCode": 429,
  "code": "RATE_LIMITED",
  "message": "Too many requests",
  "details": {
    "retryAfterSeconds": 12
  },
  "timestamp": "2026-08-23T10:15:00.000Z",
  "path": "/api/v1/store"
}

Get a tax class with its dependent counts

Returns a tax class with the number of products, variants, categories and tax rates that use it.

Delete a tax class (409 while dependents exist)

Deletes a tax class. The default class cannot be deleted, and a class that products, variants, categories or tax rates still use answers 409 with the co...