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Glossary

Free Tier

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Last updated: 2025-09-23 15:12:36

Overview

COS offers a limited free tier resource pack to all new users(i.e.users activating COS for the first time) to deduct the fees incurred by data stored in the STANDARD storage class, as detailed below:
Object
Free Tier
Validity
New user
50 GB STANDARD storage usage
6 months (180 days)
Note:
The storage usage is calculated in binary, for example, 1 TB = 1024 GB.

Free Tier

By region, The free tier is only applicable to public cloud regions, excluding financial cloud regions.
Note:
Public cloud regions include Chengdu, Chongqing, Beijing, Shanghai, Nanjing, Guangzhou, Hong Kong (China), Singapore, Seoul, Bangkok, Jakarta, Tokyo, Silicon Valley, Virginia, Frankfurt, and São Paulo.
Financial cloud regions include Beijing Finance, Shanghai Finance, Shenzhen Finance.
The free tier offered by COS can be used to deduct only STANDARD storage usage as detailed below. For more information, see Billable Items.
Note:
The free tier cannot be used to deduct billable items other than STANDARD storage usage, such as STANDARD_IA storage usage, ARCHIVE storage usage, requests, and traffic. For more information, see Billable Items.
If your service is suspended due to violations or overdue payment, you will not be eligible for the free tier even within its validity period before the service is resumed.
Fees
Billable Item
Available Free Tier
Storage usage fees
STANDARD storage usage
Yes.
New users are entitled to a free tier of 50 GB STANDARD storage usage for 6 months (180 days).
MAZ_STANDARD storage usage
No.The free tier cannot be used to deduct billable items other than STANDARD storage usage.
STANDARD_IA / MAZ_STANDARD_IA storage usage
INTELLIGENT TIERING / MAZ_INTELLIGENT TIERING storage usage
ARCHIVE / MAZ_ARCHIVE storage usage
DEEP ARCHIVE storage usage
Requests
Number of requests
Data retrievals
Amount of retrieved data
Traffic fees
Public network downstream traffic, CDN origin-pull traffic, cross-region replication traffic, global acceleration traffic
Management feature fees
Inventory feature, COS Select feature, batch operation feature, object tagging feature


Samples

Note:
For more information on billing after the free tier term ends, see Billing Examples.
Prices in the following examples are for reference only. For the actual prices, see Pricing | Cloud Object Storage.
Assume that individual user A activated the COS service on March 10, 2019, uploaded 50 GB of files to the STANDARD storage class in Beijing region on March 16 generating 100 requests, and downloaded 10 GB of data over the public network on March 20 generating 100 requests. Apart from these operations, user A did not perform any other operations before the end of September.
Time
Description
Unit Price
Volume
Fees (USD)
March 10, 2019
User A received a monthly free tier of 50 GB STANDARD storage usage valid for 6 months (180 days).
-
-
Free of charge
March 17–September 5, 2019
Starting from March 17, 2019, the STANDARD storage usage fees were settled daily. As user A had a free tier of 50 GB STANDARD storage usage valid between March 10 and September 5, 2019 (180 days), there were no charges.
-
-
Free of charge
March 17, 2019
The fees for 100 STANDARD requests were settled.
0.024 USD/10,000 requests
100 requests
0.024 * 100 / 10000 = 0.00024 USD
March 21, 2019
The fees for 10 GB public network downstream traffic were settled.
0.1 USD/GB
10 GB
0.1 * 10 = 1 USD
March 21, 2019
The fees for 100 STANDARD requests were settled.
0.01 USD/10,000 requests
100 requests
0.01 * 100 / 10000 = 0.0001 USD
September 6, 2019
User A's free tier expired on September 6, 2019, so the storage usage from September 6 to September 30, 2019 (25 days) became pay-as-you-go. Fees for 50 GB STANDARD storage usage were settled daily.
0.024 USD/GB/month
50 GB
0.024 / 30 * 50 * 25 = 1 USD

Access and Query

After you sign up for a Tencent Cloud account as instructed in Signing Up and log in to the COS console to activate the COS service, the system will automatically issue the free tier to your account.

Validity Period

The free tier is valid for 6 months (180 days) after the activation of your COS service.
For example, if you activated COS at 17:13:14 on March 10, 2019, and assume that 6 months is equal to 180 days, then the free tier would cover your STANDARD storage usage between March 10 and September 5, 2019.

Billing Sequence

During the free tier term, you may still be charged for other fees, such as request fees and traffic fees. Therefore, the billing sequence varies by scenario.
By default, COS bills are settled in a pay-as-you-go manner.
If you are eligible for the free tier of STANDARD storage usage, then your bills will be settled in the order of free tier > pay-as-you-go billing, that is, you will be charged in a pay-as-you-go manner for the usage in excess of the free tier.

Troubleshooting

If you have any questions about the free tier or your bills, see Billing or contact us.

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