Refund rules for switching from subscription to pay-as-you-go - Expenses and Costs

You can convert a Subscription instance to the Pay-as-you-go billing model. After converting, you are billed for your actual usage, and the remaining subscription fee is refunded. This lets you optimize costs and manage resources with greater flexibility.

Refund rules

You can convert a Subscription instance to Pay-as-you-go at any time after it is created. This lets you use resources more flexibly and receive a refund for the unused portion of your subscription fee.

Refundable amount calculation

Refundable amount = Paid amount - Fee for consumed resources, where:

Paid amount: The amount paid for the order, excluding any value from coupons. This may also be referred to as the "Order payable cash amount."

Fee for consumed resources: Calculated based on the following rules:

Type		Calculation rule
Elastic Compute Service (ECS)	Usage duration < 30 days	(Daily unit price × Usage duration × Discount for the usage duration) × 1.5
	Usage duration ≥ 30 days	Daily unit price × Usage duration × Discount for the usage duration
Other cloud services		Daily unit price × Usage duration × Discount for the usage duration

Parameter description

Parameter	Description
`Usage duration`	The actual usage duration of the order, calculated in days. A partial day counts as a full day. `Usage duration` = Conversion time - Order start time Example: If you purchase an ECS instance for one year at 12:00 on 2023-01-01 and convert it to Pay-as-you-go at 14:00 on 2023-01-10, the `Usage duration` is 10 days. If you purchase an ECS instance for one year at 12:00 on 2023-01-01 and convert it the same day at 14:00, the `Usage duration` is 1 day.
`Discount for the usage duration`	When you convert, the system automatically recalculates the best applicable discount based on the resource configuration and `Usage duration`.
`Daily unit price`	If the original order was for a new purchase, renewal, or downgrade: `Daily unit price` = Original order price / Actual purchase duration of the order If the original order was for an upgrade: `Daily unit price` = Daily unit price of the configuration difference = (Original order price / Actual purchase duration of the order) × Price difference ratio of the upgrade Price difference ratio of the upgrade = (Daily unit price of the upgraded configuration - Daily unit price of the pre-upgrade configuration) / Daily unit price of the upgraded configuration Note: All daily unit prices in this formula are list prices, excluding any discounts. Actual purchase duration of the order = Order end time - Order start time The duration is rounded down to the nearest whole day. For example, if you purchase an ECS instance for one month at 12:00 on 2023-01-01 and the order end time is 00:00 on 2023-02-02, the actual purchase duration of the order is 31 days.