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Use of e-Tax Software (WEB version)

Using e-Tax software (WEB version) allows you to file taxes and display forms on the Web without downloading or installing e-Tax software.
However, you can only use it when e-Tax is available. For the available time, please refer to "Service state/available hours of e-Tax (Japanese)".

Before using e-Tax software (WEB version), please follow the steps below.

1 Confirm the Terms of Use

You must agree to all of the following terms of use to use the electronic filing tax payment system and submit the notification forms to start (change etc.) on-line, so please be sure to check before using.

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2 Check the Operating Environment

To use e-Tax, as for the e-Tax (WEB version) software, we recommend the following system in terms of hardware, operating system (OS), and web browser. The recommended system is a computer system on which National Tax Agency has verified the operation of the software.


  • CPU: Pentium 4 (1.6 GHz) or higher (or equivalent)
  • Memory: 512 MB or more
  • Hard disk drive (HDD): 2 GB or more of available space
  • Screen resolution: 1024 x 768 or higher

Windows users

OS Browser PDF browsing Java VM
  • Microsoft Windows 7
  • Microsoft Internet Explorer 11

Adobe Acrobat Reader DC

  • Microsoft Windows 8.1
    * "Desktop mode" only.
  • Microsoft Windows 10

Macintosh users

OS Browser PDF browsing Java VM
  • Mac OS 10.10
  • Safari 10.1
  • Adobe Acrobat Reader DC
  • Oracle Java 8
    Oracle Java 9
  • Mac OS 10.11
  • Mac OS 10.12

* Any systems (including OS, etc., for which the support has been ended) other than shown above are not recommended and may not be usable.
* Use a 32-bit version of a web browser on Windows.
* Use a Japanese version of an OS.
* Apply the latest service pack, etc., to the OS before using.
* Administrator privileges are required to perform installation, uninstallation, and version upgrade.

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3 Acquire electronic certificates

File applications with the e-Tax software (WEB version) requires some form of identification. Therefore, you need to obtain an electronic certificate such as "electronic certificate based on public individual authentication service" embedded in My Number Cards or resident registry cards. (Excluding users of specific procedures for paying taxes only, a statement of collected income tax, payment information registration request, and request for delivery of certificates of tax payment (with signatures omitted)).
For details, please see "How to obtain an electronic certificate" on the following link.

Acquirement and configuration of IC card reader/writer

IC card reader/writer image

If you are using an electronic certificate embedded in an IC card, such as My Number Card or a basic resident registration card, an IC card reader/writer is required in addition to the electronic certificate.
An IC card reader/writer is available at electronics retail stores, etc. for roughly 3,000 yen.
If you are using an electronic certificate other than My Number Card or basic resident register card, a dedicated software to use the electronic certificate may be required. In this case, install and configure according to each installation manual.
For details, please check with the issuer of your electronic certificate. (Please see here about the issuing agencies of electronic certificates that can be used with e-Tax.)

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4 Advance preparation for e-Tax Software (WEB version)

The "Advance preparation setup" tool is a useful tool that allows you to perform the installation and configuration together necessary for e-Tax software (WEB version).
When the e-Tax software (WEB version) is used without completing the advance preparation setup for the e-Tax software (WEB version), the software may not operate correctly.

(Note) Users who have completed the advance preparation setup for the "Page for creating tax return forms" are still required to complete an advance preparation setup in the "e-Tax software (WEB version)".

Please check the following installation manual and download "Advance preparation setup" tool compatible with the OS and browser of your computer to the PC before use.

Windows users

Macintosh users

Adobe Readerのダウンロードページへ

Download Adobe® Reader® (Acrobat Reader)

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5 Submit the Notification of Start Using e-Tax

Expected users of e-Tax are required to submit the "Notification of start using e-Tax" to the district director of the Tax Office with jurisdiction over the place of tax payment.
Using e-Tax software (WEB version) allows you to send the notification of start using e-Tax online.
To submit the notification of start using e-Tax is a common procedure for using e-Tax. If you submit the notification of start using e-Tax with selecting "filing and tax payment procedures" in "start (usage classification)", you can do any procedures such as filing, tax payment, and application/notification through e-Tax. After that, there is no need to submit the notification of start once again for each procedure.

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6 Register electronic certificates

In e-Tax, by attaching an electronic signature and electronic certificate to the application, we confirm that the user created the application and not falsified. Registering the electronic certificate in e-Tax through the computer in advance allows us to process the confirmation in a short time and send the reception notice promptly to the sender.

  • (Note) No electronic certificate is required for only using a statement of collected income tax, payment information registration request, and request for delivery of certificates of tax payment (with signatures omitted) on e-Tax.

In the e-Tax software (WEB version), you can register the electronic certificate by the following operation through the computer.

(1) When submitting a notice of start online from e-Tax software (WEB version)
When you log in to the e-Tax software (WEB version) with the acquired user identification number, the electronic certificate registration screen will be displayed. Please register as instructed.
(2) If you already have a user identification number
After logging into e-Tax software (WEB version), when registering user information from the "Registration, confirmation and change of user information" menu, the registration screen of the electronic certificate will be displayed. Please register as instructed.

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7 Using e-Tax Software (WEB version)

You can use e-Tax software (WEB version) from the following link. For basic operation method of e-Tax software (WEB version), please check "Trial version of e-Tax software (WEB version)" or "User guide for e-Tax software (WEB version)".

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