Tax Systems in japan

The japaenese Tax system has always been complicated for non japanese nationals for many reasons .

Top of the list Language , inability to fill the forms because lack of understanding of the whole tax systems .

the National Tax Agency has out line the procedure on it website

During your stay in Japan, you may incur income tax obligations.
This page is intended to inform you of this possibility and the general requirements of the Japanese Income Tax law.

This is also another useful link for more information on the tax system in japan