---
title: "Change the clinic's subscription plan."
method: POST
path: "/api/v1/billing/change"
tags: ["Billing"]
---

# Change the clinic's subscription plan.

`POST /api/v1/billing/change`

## Request

- Base URL: `https://api-dev.fusehealth.com`
- URL: `https://api-dev.fusehealth.com/api/v1/billing/change`
- Auth: API key in header `x-api-key`

Upgrades/downgrades via Stripe proration or schedule update. Write-scoped.

## Request body

- object
  - `newPlanId` string, required

## Response `200`

Success

- object

## Other responses

- `400`: Bad request / business-rule failure (may include a `code`)
- `401`: Missing, invalid, inactive, or expired API key (or JWT)
- `403`: Authenticated but not permitted (insufficient scope, wrong role, or FUSE feature not enabled)

---

[API](https://skmtc.dev/fusehealth/apis/fuse-brand-api-external.md) · [All operations](https://skmtc.dev/fusehealth/apis/fuse-brand-api-external/llms.txt) · [OpenAPI document](https://skmtc.dev/fusehealth/apis/fuse-brand-api-external/revisions/50821832728c?raw)