All Products
Search
Document Center

Object Storage Service:Billing overview

Last Updated:Nov 14, 2025

Object Storage Service (OSS) uses a pay-as-you-go billing method, where you are charged based on your actual usage.

Storing data in OSS incurs storage fees based on the storage duration. You also incur request fees for uploading, downloading, or accessing data, and outbound traffic fees for distributing data over the internet. In addition, enabling value-added services such as CDN acceleration, image processing, transfer acceleration, and Anti-DDoS incurs the corresponding fees for value-added services.

If your business has a stable access pattern with predictable storage amounts, request volumes, and outbound internet traffic, you can purchase resource plans to offset specific billable items and reduce costs. Resource plans must correspond exactly to the billable items. For example, an outbound data transfer plan can only offset outbound traffic fees. If you purchase a plan for the wrong billable item, you cannot use it to offset fees.

Unit prices

For more information about OSS pricing, see OSS Pricing.

Billable items

OSS billable items include the following types:

  • Basic billable items: These are the fees that most users incur when using OSS. They include storage fees for data storage, traffic fees for downloading files from OSS or distributing files through CDN, and request fees for each read or write request.

  • Value-added billable items: These are fees that you incur when you enable and use value-added services. Value-added services, such as image processing, transfer acceleration, and Anti-DDoS, are designed to improve data processing efficiency or user experience. For more information, see Value-added billable items.

OSS billing diagram

The following figure shows all possible OSS billable items:

Billing methods

The common billing methods for OSS are as follows:

  • Pay-as-you-go: With this billing method, you use resources first and pay for them later. You are charged based on the actual usage of each billable item. This method is suitable for scenarios where your business usage often changes.

  • Resource plans: This is a subscription billing method where you pay upfront for a discounted resource plan that covers specific billable items, such as storage and traffic fees. During settlement, usage is first deducted from your resource plan. Any usage that exceeds the plan's quota is billed on a pay-as-you-go basis. This method is suitable for scenarios with stable business usage.

Other subscription methods for storage fees

For some storage fee items, you can also use Storage Capacity Units (SCUs) to offset fees. In addition to offsetting OSS storage fees, SCUs can also be used to offset storage capacity fees for various other cloud storage products.

Free trial quotas for new users

Users who activate OSS for the first time are eligible for a free trial quota for new users. This quota provides a certain amount of free Standard LRS capacity.

Billing cycle

OSS calculates usage for all resources hourly and generates bills based on this usage.

Note

Take storage fees as an example. The OSS Pricing page specifies the unit price for storage fees in USD/GB/month, but pay-as-you-go fees are calculated on an hourly basis. The calculation is Actual resource usage × Hourly unit price. Therefore, to calculate the actual storage fees, you must convert the monthly unit price to an hourly unit price in USD/GB/hour. For example, if the unit price for Standard LRS is USD 0.0173/GB/month, the approximate hourly unit price is USD 0.000024/GB/hour (0.0173 ÷ 30 ÷ 24).

References