---
title: "Subscriber moved to a higher-priced plan."
method: POST
path: "subscription.upgraded"
tags: ["subscription.* events"]
---

# Subscriber moved to a higher-priced plan.

`POST subscription.upgraded` (webhook)

### When this fires

A subscriber is switched to a higher-priced plan on the same project. The plan assignment, currency, and stored price on the Subscriby subscription record are updated, and this event reports the move.

The switch does not itself perform a provider-side pro-ration or issue a charge. Any billing adjustment is whatever the provider does on the next cycle.

### Caveats

- Direction is decided by comparing the two plan prices, normalised to USD, at switch time. Only a strictly higher new price emits `subscription.upgraded`; an **equal-price switch emits `subscription.downgraded`**, which is worth guarding for if you offer same-price plan swaps.
- Trial windows do not carry across switches; if the destination plan has a trial it does not start.

### Related events

- `subscription.downgraded`: opposite direction.
- `payment.succeeded`: the next successful charge on the new plan.

## Headers

- `SB-Signature` string, required
- `SB-Event-Id` string, required
- `SB-Event-Name` string, required
- `Content-Type` string, required
- `User-Agent` string, required

## Payload

- object: The envelope every event is delivered in.
  - `id` string, required: A ULID unique to the event, prefixed `evt_`. Every retry carries the same id, so it is the key to deduplicate on.
  - `type` 'subscription.upgraded', required: The event name, always `subscription.upgraded` here.
  - `created_at` string, date-time, required: When the event was emitted, server time, ISO 8601.
  - `api_version` string, required: The contract version of the payload shape, `2026-05-01` today. A breaking change to a shape ships under a new version.
  - `project_id` string, uuid, nullable, required: The project the event belongs to; null for team-scoped and billing events.
  - `data` object, required: The event-specific payload. Keys that do not apply to a given emission are omitted rather than sent as null, so check for presence.
    - `subscription_id` string, uuid, required: Subscription identifier.
    - `subscriber_id` string, uuid, required: Subscriber's project-scoped user id.
    - `from_plan_id` string, uuid, required: Plan id the subscription was on prior to the change.
    - `to_plan_id` string, uuid, required: Plan id the subscription is now on.
    - `proration_amount` string, decimal, nullable, required: Reserved. **Always `null`**: pro-ration is not yet computed for this event.

## Acknowledgement `2XX`

Your endpoint acknowledged the delivery. Any 2xx status within 30 seconds marks it delivered; the response body is ignored.

## Other responses

- `default`: Any other status, a connection failure, or no answer within 30 seconds counts as a failed attempt. The delivery is retried 8 times, after 10 seconds, 30 seconds, 2 minutes, 10 minutes, 1 hour, 6 hours, 1 day, 3 days; the last failure dead-letters it, and it can be retried from the dashboard or `POST /v1/webhook-deliveries/{delivery}/retry`. After 20 consecutive failures the endpoint is paused until it is resumed.

---

[API](https://skmtc.dev/memberpass/apis/subscriby-rest-api.md) · [All operations](https://skmtc.dev/memberpass/apis/subscriby-rest-api/llms.txt) · [OpenAPI document](https://skmtc.dev/memberpass/apis/subscriby-rest-api/revisions/59c4df91d764?raw)