How to register dependents yourself on the tax public service portal.

Create MindDecember 26, 2025 06:16

This guide provides a detailed 14-step process for declaring and submitting the dependent registration form (Form 20-ĐK-TH-TCT) online, helping taxpayers save time.

Registering dependents is an important procedure that helps individuals claim family allowance deductions when settling personal income tax. Below is a detailed guide on the online process through the General Department of Taxation's public service portal for income-paying organizations.

Online registration and application submission process

Step 1: Log in to the system

Access the State Tax Public Services website (dichvucong.gdt.gov.vn). Select the section.Log inand select the login subject asBusinesses.

Giao diện đăng nhập cổng dịch vụ công thuế
Select "Business" as the login subject to begin.

Step 2: Select the registration form.

In the Administrative Procedures section, search for the application form.20-DK-TH-TCT according to Circular 86This is a form used by income-paying agencies to register authorized dependents.

  • First-time registration: Select code1.008500
  • Register for information change: Select code1.008503

Then, click on the icon.Submit applicationcorresponding.

Chọn mã thủ tục hành chính phù hợp
Select the correct procedure code depending on the purpose of new registration or information change.

Step 3: Choose your submission method.

Choose the application submission method:Online declarationand pressContinueIf you already have an XML file, you can upload it and click "check" right at this step.

Chọn hình thức kê khai trực tuyến
The system allows for online declaration or submission of XML files.

Step 4: Fill in the information and check.

Users fill in all the required information on the form. After completion, click [button/button].Check the informationto allow the system to check for errors.

Kiểm tra thông tin tờ khai
Double-check the information before moving on to the next step.

Steps 5 to 8: Search and verify temporary records.

After verification, the file will be transferred to the following section.Search temporary archive recordsHere, you select the correct type of declaration and submission period to search.

Tra cứu hồ sơ lưu tạm
Access the search section to find the recently submitted application.

When the application status shows "Information checked," click the submit icon. If the status remains unchanged...Obtain, pressComplete the declaration.If the requirements are not met, you need to revise the information.

Hoàn thành kê khai hồ sơ đạt yêu cầu
Only applications with a "Passed" status can proceed.

Steps 9 to 11: Attach documents and digitally sign.

Attach the necessary documents, enter the captcha code, and press Enter.Submit the declaration form.Finally, perform a digital signature to complete the process.

Đính kèm hồ sơ liên quan
Attach supporting documents proving dependent status as required.

Troubleshooting Digital Signature Plugin Errors

If the system notifiesThe digital signature plugin has not been installed or enabled.To do this, you need to follow these steps:

  1. Switch tabHelpon the website.
  2. Download the softwareTCT SigningHubRegarding computers and settings.
  3. Close your browser, open the application.CT Signingon Desktop.
  4. Log back into the public services website and resubmit your application using the "Lookup temporarily saved applications" section.
Cài đặt TCT SigningHub
Install the digital signature plugin to successfully submit your tax return.

Check processing results

After successful submission, users can track the status in the relevant section.Check submitted applicationsEnter the case code and click search to see the processing results from the Tax authority.

Tra cứu kết quả nộp hồ sơ
Track your application processing progress online.
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