Subscription Payments 
Subscriptions are provided by Checus, enabling merchants to integrate recurring billing via Checkout, API, or Frontend Components to charge users on a periodic basis.
Key Advantages:
- Support complex subscription models (trial period, discounted period, price changes, etc.)
- Built-in subscription lifecycle management (automatic retry, failure termination, status callbacks)
- Users are exempt from re-entering payment details, greatly improving renewal success rate
- Flexible integration options: API, Checkout, Frontend Components, etc.
Currently, the subscription model supports card payments only.
Subscription Plan Types and Rules 
Subscription Plan Types 
| Type | Description | 
|---|---|
| Standard Plan | Charges on a fixed cycle; the price is the same for all periods. | 
| Trial (n days) | The first period is a free trial; it automatically enters normal billing afterward. | 
| Discounted First n Periods | Discounted price for the first n periods; subsequent periods are charged at the original price. | 
Subscription Plan Time Rules 
- Total duration must be ≤ 3 years
- After creation the status is INACTIVE; it must be activated before the “first charge time”
- If the first charge time is more than 24 hours after creation, it must be activated within 24 hours after creation, otherwise it will be set to EXPIRED
Lifecycle Management 
Subscription Plan Status 
| Status | Description | Notes | 
|---|---|---|
| INACTIVE | Not activated | Default after creation | 
| ACTIVE_FAILED | Activation failed | Activation request failed | 
| ACTIVE | Active | Activation succeeded | 
| TERMINATE | Subscription terminated | Terminated after a failed charge in some period | 
| CANCEL | Canceled | Canceled by merchant/user | 
| FINISH | Completed | All periods charged successfully | 
| EXPIRED | Expired (not activated) | Not activated within the time limit | 
Charge Status 
| Status | Description | 
|---|---|
| PENDING | Charging | 
| SUCCESS | Charge success | 
| FAILED | Charge failed | 
User Flow 
- The user selects a subscription service on the merchant’s page.
- The user is redirected to the Checus payment page to complete the first payment and authorization.
- Checus returns the subscription creation result (status is INACTIVE).
- After the first payment succeeds, Checus activates the subscription (status becomes ACTIVE).
- Upon each due date, Checus automatically initiates the charge and notifies the merchant of the result.
- The user can proactively cancel the subscription on the merchant’s page.
Note: The first-time binding and payment experience is consistent with a normal card payment.

