楽天「税抜」計算機 is a free Chrome add-on developed by NRS systems. This program is designed to calculate the total amount of purchases made on the Rakuten marketplace within a specified period.

To use the tool, simply click on the "楽天へ" button and specify the desired time frame before pressing the "Run" button. The program will then display the amount in both pre-tax and post-tax values, making it convenient for event planning and budgeting purposes.

Please note that logging into your Rakuten account is required to use this application.

It is important to be aware of the following points when using this application:

• The trial period is 7 days from installation.
• After 7 days, a message will be displayed on the bottom right of the screen providing a free password for continued usage.
• Each time you enter the password, you will have free access to the application for 180 days.
• Please understand that the support provided through this password distribution is for updates, upgrades, and other important information related to this application.