Tax Retainer Service refer to the services provided by a tax consulting firm, which accepts a commission from the client and appoints tax service personnel from the firm to offer long-term tax advisory services to the client.

These services include, but are not limited to:

- Promptly and accurately answering tax-related questions raised by the client.

- Guiding the client in handling tax and accounting matters in a timely, rational, and standardized manner to enhance the client's compliance with tax laws.

- Monitoring changes in the client's tax-related business activities and relevant tax laws and policies.

- Advising the client to pay attention to potential tax risks.

- Providing recommendations to mitigate tax risks.