Flat-Rate Tax Reduction Supplemental Benefit (Adjustment Benefit) Related to FY2024 Flat-Rate Income and Resident’s Tax Reductions

Shinjuku City will provide a flat-rate tax reduction supplemental benefit (adjustment benefit) related to the FY2024 flat-rate income and resident’s tax reductions. In principle, residents registered in Shinjuku as of January 1, 2025 who meet one of the following conditions are eligible to receive this benefit:
1) Individuals whose income tax and the actual amount of the flat-rate tax reduction have been determined but still have an unreduced balance even after the initial adjustment benefit (already provided in FY2024) will receive “Adjustment benefit 1.”
2) Individuals who meet certain requirements, such as being ineligible for the flat-rate tax reduction, will receive “Adjustment benefit 2.”
We will send eligible residents a benefit notification (sealed postcard), a confirmation form, or an application form.

The deadline for returning the confirmation form or application form is October 31 (Fri.), 2025 (valid if postmarked on that day).

If you do not return the form by the deadline, you cannot receive the benefit.
If you receive the benefit notification (sealed postcard), no further action is required.

For more information, please click here.

July 5, 2025