- Release Notes and Announcements
- Product Introduction
- Purchase Guide
- Getting Started
- Public NAT Gateway Operation Guide
- Private NAT Gateway Operation Guide
- Practical Tutorial
- Enabling Cross-VPC Access to Public Network via Standard NAT Gateway
- Enabling Mutual Access between a Specified VPC Subnet and Public Network Resources via Private NAT Gateway
- Enabling Secure Mutual Access with Public Network via Public CLB and NAT Gateway
- Adjusting the Priorities of NAT Gateways and EIPs
- API Documentation
- FAQ
- Service Level Agreement
- Contact Us
- Glossary
- Release Notes and Announcements
- Product Introduction
- Purchase Guide
- Getting Started
- Public NAT Gateway Operation Guide
- Private NAT Gateway Operation Guide
- Practical Tutorial
- Enabling Cross-VPC Access to Public Network via Standard NAT Gateway
- Enabling Mutual Access between a Specified VPC Subnet and Public Network Resources via Private NAT Gateway
- Enabling Secure Mutual Access with Public Network via Public CLB and NAT Gateway
- Adjusting the Priorities of NAT Gateways and EIPs
- API Documentation
- FAQ
- Service Level Agreement
- Contact Us
- Glossary
This document describes the billing items and charging standards of NAT gateways.
Standard NAT Gateway
Note:
Standard NAT Gateway is in beta testing and currently supports Beijing, Shanghai, Guangzhou, Chengdu, Chongqing, Hong Kong (China), Singapore, and Bangkok. If you need to use it, please submit a ticket for request.
The standard NAT gateways incur gateway fees. Gateway fee = Instance fee + CU (Capacity Unit) fee. Both the instance fee and CU fee are postpaid and billed hourly.
Instance fee = Instance price (USD/hour) * Usage duration (hours)
CU fee = CU price (USD/unit/hour) Number of CUs (units) Usage duration (hours). The number of CUs is calculated based on the maximum number of CUs consumed per hour:
Number of CUs = MAX[number of CUs for hourly active connections, number of CUs for hourly new connections, number of CUs for hourly traffic processed]
Gateway Fee
Gateway Fee | Region | Unit Price (USD/unit/hour) | Transaction Unit Price for New Purchase (USD/unit/hour) |
Instance fee/CU fee | Guangzhou/Beijing/Shanghai/Chengdu/Chongqing/Hong Kong (China) | 0.034 | 0.0289 |
| Singapore/Bangkok | 0.043 | 0.03655 |
CU is a performance capacity unit calculated based on the actual performance metrics consumed by the gateway per hour. It is used to measure various metrics involved in traffic processing by the standard NAT gateway. The CU performance metrics are shown in the table below:
Metric Name | CU Coefficient | Description | Calculation Formula for the Number of CUs per Hour |
Active connections (conns) | 10,000 | The number of active connections accommodated simultaneously. During a billing cycle, the system records the number of active connections per minute for the NAT gateway, and then divides the maximum number of active connections per minute by the CU coefficient to obtain the number of CUs for hourly active connections. | Number of CUs for hourly active connections = Maximum number of active connections/CU coefficient |
New connections (cps) | 1,000 | The number of new connections per second. During a billing cycle, the system records the number of new connections per second for the NAT gateway, and then divides the maximum number of new connections per second by the CU coefficient to obtain the number of CUs for hourly new connections. | Number of CUs for hourly new connections = Maximum number of new connections/CU coefficient |
Traffic processed (bytes) | 1 GB | The quantity of the bytes processed by the NAT gateway, including outbound and inbound traffic (measured in GB). During a billing cycle, the system records the total traffic (outbound and inbound) processed by the NAT gateway, and then divides the total traffic by the CU coefficient to obtain the number of CUs for hourly processed traffic. | Number of CUs for hourly processed traffic = Total processed traffic/CU coefficient. |
Note:
The default specifications of standard NAT gateways are 2,000,000 concurrent connections, 100,000 new connections per second, and 5 Gbps bandwidth cap.
Since Tencent Cloud accounts are classified into traditional and standard account types, the public network bandwidth fee varies by account type. Before usage, you can refer to Checking Account Type to determine the account type. Only the standard accounts can use the standard NAT gateways, which support binding EIPs of all billing modes.
Note:
The following policies became effective from 00:00:00 on June 1, 2023:
Newly purchased standard NAT gateways: The transaction unit prices for instance fees and CU fees on the official website are all reduced by 15%.
Existing standard NAT gateways: The price remains unchanged.
This price reduction is valid for a long term. Any subsequent changes will be announced in advance.
Other Relevant Fees
The standard NAT gateway supports public network access through EIPs. The billing for public NAT gateway instances does not include EIP fees. For EIP billing rules, please see Related Documents.
Traditional NAT Gateway
The traditional NAT gateway (original NAT gateway) fee consists of the gateway fee and the network fee.
Gateway Fee
The gateway fee is the instance fee postpaid and billed hourly. Prices vary by specifications. For details, see the table below.
Type | The Chinese Mainland (Excluding Hong Kong, Macau and Taiwan) | Singapore, Jakarta, Silicon Valley, Virginia, Frankfurt, Hong Kong (China), Seoul, Tokyo, São Paulo | Mumbai | Bangkok |
Small (up to 1,000,000 connections) | 0.089 USD/hour | 0.13 USD/hour | 0.18 USD/hour | 0.14 USD/hour |
Medium (up to 3,000,000 connections) | 0.28 USD/hour | 0.39 USD/hour | 0.54 USD/hour | 0.42 USD/hour |
Large (up to 10,000,000 connections) | 0.89 USD/hour | 1.3 USD/hour | 1.8 USD/hour | 1.4 USD/hour |
Network Fee
The network fee is the traffic fee generated by the CVM accessing the public network through the EIP bound to the NAT gateway. The private network communication between the CVM and the NAT gateway does not incur a network fee. Since Tencent Cloud accounts are classified into traditional account type and standard account type, the public network bandwidth fee varies by account type. Before usage, you can refer to Checking Account Type to determine the account type. For different account types, the traditional NAT gateway adopts different billing modes for the network fee.
Standard account type:
Supports binding common IPs billed by traffic, as well as regular IPs, accelerated IPs, and static single-line IPs billed by bandwidth package.
The EIP under this account type has bandwidth and traffic management capabilities. Therefore, the network fees are uniformly billed on the EIPs bound to the NAT gateway, and no duplicate fees are billed on the NAT gateway. For details, please refer to EIP Public Network Fees.
When the users of the standard account type enable the bandwidth package feature and add the EIPs bound to the NAT gateway to the bandwidth package (IP resource package), the bandwidth fee for the NAT gateway service will be settled according to the overall bandwidth package.
Traditional account type:
Only supports binding EIPs of common BGP IPs.
The EIP under this account does not have bandwidth and traffic management capabilities. Therefore, the network fee is billed by traffic on the NAT gateway. It is postpaid and settled hourly. The billing prices are as follows:
Region | Price (Unit: USD/GB) |
The Chinese mainland (excluding Hong Kong, Macau and Taiwan), Hong Kong (China), Jakarta, Seoul | 0.12 |
Tokyo | 0.13 |
Singapore | 0.081 |
São Paulo | 0.15 |
Silicon Valley, Frankfurt | 0.077 |
Bangkok, Mumbai | 0.1 |
Virginia | 0.075 |
Billing Example:
For example, CVM1, CVM2, and CVM3 in a VPC of the Guangzhou region accessed the public network through a small NAT gateway. During 07:00:00 - 07:59:59, a total of 10 GB traffic was used. The fees incurred at 08:00:00 are as follows:
Network fee: 0.12 USD/GB × 10 GB = 1.2 USD. It indicates that a network fee of 1.2 USD is charged on the NAT gateway.
Gateway fee: 0.089 USD (The unit price for the small NAT gateway in Guangzhou region is 0.089 USD/hour.)
Total fee = 1.2 USD + 0.089 USD = 1.289 USD
Note:
NAT Gateway features dual-server hot backup. The system sends a 5 KB detection packet to the primary and secondary servers of the NAT gateway every 3 seconds, thereby generating 0.2747 GB traffic each day. The fees incurred for the Chinese mainland (excluding Hong Kong, Macao, and Taiwan) and Hong Kong (China) are 0.033 USD and 0.033 USD respectively.
Note:
The original Small, Medium, and Large NAT Gateways have been respectively renamed to Traditional NAT Gateway - Small, Traditional NAT Gateway - Medium, and Traditional NAT Gateway - Large. For details, please see Announcement on the Renaming of the NAT Gateway Type.
For the comparison between the Standard NAT Gateway and the Traditional NAT Gateway, please see Instance Type Comparison.
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