令和８年分 年末調整控除申告書作成用ソフトウェア

国税庁

About this app

The Year-End Adjustment Deduction Declaration Form Creation Software for Fiscal Year 2026 (hereinafter referred to as "Year-End Adjustment Software") is software provided by the National Tax Agency that allows employees to easily create year-end adjustment deduction declaration forms, etc., to be submitted to their employers, either digitally or on paper, using deduction certificate data.

This Year-End Adjustment Software is compatible with year-end adjustments for fiscal year 2026 conducted on or after December 1, 2026.

■Main Functions
・Creation and saving of year-end adjustment deduction declaration form data
・Import of various deduction certificate data
・Linkage with My Number Portal
・Easy verification of deduction amounts

■Supported Versions
Android 13 or later

■Notes
・The Year-End Adjustment Software does not calculate the annual income tax amount.

・Please check with your employer whether they can accept deduction declaration forms created with the Year-End Adjustment Software before using it.

・The deduction declaration form image output by the Year-End Adjustment Software differs in layout from the form published on the National Tax Agency website, but this is not a legal issue.

■Changes in Version 7.0.0
We have released software compatible with year-end tax adjustments for 2026.
This software is compatible with year-end tax adjustments for 2026 that will be conducted on or after December 1, 2026.