Gensen chōshū-hyō guide
The gensen chōshū-hyō is the compact year-end slip that explains your salary, withheld tax, and why January always begins with a brief period of document hunting. This page is the site's withholding guide and loose W-2/1099 equivalent.
Service overview
If the form feels dense, that is normal. The goal is not to memorize every box, only to know which figures belong in the filing flow.
Key detail
Start with the total pay figures so the return reflects what your employer reported for the year.
Key detail
Locate the withheld amount and use it to line up what was already paid during the year before the final calculation.
Key detail
Review the social insurance and other deduction fields so you can cross-check what has already been accounted for.