Overview
After purchasing resources, you can adjust the configuration of the resources within their validity period.
When a pay-as-you-go instance is upgraded or downgraded, it will be billed based on the new specification in the next billing cycle. No fees will be involved in the configuration changes.
When you upgrade a monthly subscribed instance, you need to pay the price difference. When you downgrade it, you need to first return the original configurations before purchasing the new configurations. The billing rules are as follows.
Note
It takes 3-5 minutes for the configuration changes you make to take effect, and the task will be paused during this period.
Upgrading a monthly subscribed instance
Billing rules
The price difference should be made up based on the number of days. Configuration upgrade fees = price difference for upgrade per month x number of months for upgrade x applicable discount.
Price difference for upgrade per month = unit price of original configurations - unit price of new configurations.
Number of months for upgrade = number of days for upgrade/(365/12) = (resource expiration time - current time)/(365/12)
Applicable discount: It is matched based on the number of months for upgrade as effective at the official website.
Configuration upgrade doesn't affect the resource expiration time.
You can pay configuration upgrade fees by using your vouchers and free credits.
Billing example
On March 31, 2022, you purchased a monthly subscribed data sync link of the micro specification in Guangzhou region for 6 months, and the micro specification was priced at 56.86 USD/month without any discount.
On May 1, 2022, you upgraded it from the micro specification to the small specification, and the small specification was priced at 120.29 USD/month without any discount.
Price difference for upgrade per month = 120.29 - 56.86 = 63.43 USD/month
Number of months for upgrade = 152/(365/12), where 152 is the number of days for upgrade. Since you had used it for 1 month from March 31 to May 1, there were 152 days remaining in the 5 months from May 1 to September 30, 2022.
Configuration upgrade fees = (120.29 - 56.86) × (152 / (365/12)) = 316.98 USD
Downgrading a monthly subscribed instance
Billing rules
Refund for downgrade = fees of original specification - fees of new specification. The instances will be billed based on the actual usage duration. A usage duration less than one day will be calculated as one day. For more information, see Refund. If the refund is greater than 0, the configuration will be downgraded, and fees will be returned to your Tencent Cloud account in a backtrack manner.
If the refund is not greater than 0, the configuration will be downgraded, but no fees will be refunded.
If you used a discount or voucher at the time of purchase, the discount or voucher is non-refundable.
Billing example
On May 1, 2022, you purchased a monthly subscribed data sync link of the small specification in Guangzhou region for 12 months, and the small specification was priced at 120.29 USD/month.
On March 4, 2023, you downgraded it from the small specification to the micro specification, and the micro specification was priced at 56.86 USD/month.
You have used the original specification for 307 days before the downgrade, and there were still 58 days until it expired on May 1, 2023. The original specification will be refunded based on the actual usage duration.
Fees of purchasing original specification = 120.29 × 12 = 1443.48 USD
Fees of refunding original specification = 1443.48 - 120.29 × 307/(365/12) = 229.37 USD
Fees of purchasing new specification = 56.86 × 58/(365/12) = 108.42 USD
Refund for downgrade = 229.37 - 108.42 = 120.95 USD