"Property Tax Overpayment Checker" Released for Free by Shisanzei Navi – Determines Overpayment by Comparing with Prefectural Averages

Mycat Inc. (Headquarters: Meguro-ku, Tokyo) has newly released the "Property Tax Overpayment Checker" (https://shisanzei.xyz/tools/overpay-checker) for free on its AI property tax simulator "Shisanzei Navi" (https://shisanzei.xyz).

"Property Tax Assessment Errors" Are Not Someone Else's Problem

According to the Ministry of Internal Affairs and Communications' "Survey on the Status of Tax Amount Corrections for Property Tax and City Planning Tax," a considerable number of tax amount corrections due to property tax assessment errors are reported annually by local governments nationwide (Source: Ministry of Internal Affairs and Communications' "Survey on the Status of Tax Amount Corrections for Property Tax and City Planning Tax"). The causes of assessment errors are diverse, including cases where the special exemption for residential land is not applied or where the depreciation of buildings over time is not correctly reflected.

Since property tax is calculated and notified by municipalities under the "assessment and levy system," taxpayers have limited opportunities to verify the calculation themselves. The majority of people "pay as soon as they receive the notice," but there is a possibility that they have been paying extra taxes for many years without realizing the overpayment.

Three Features of the "Property Tax Overpayment Checker"

• Comparison with Prefectural Average Data: Compares the entered property tax amount with prefectural average assessment data to determine the possibility of overpayment.

• Check for Application of Residential Land Special Exemption and Depreciation: Automatically checks whether major reduction measures are correctly applied based on land area, building structure, and year of construction.

• No Registration Required, Completely Free: No need to enter your name or address. You can find out the result simply by entering the figures from your tax notice.

How to Use

1. Access the Overpayment Checker (https://shisanzei.xyz/tools/overpay-checker)

2. Enter prefecture, property tax amount, land area, building structure, and year of construction.

3. The comparison result with the prefectural average and the overpayment determination will be displayed immediately.

Future Developments

Future plans include adding a function to check for overpayments of city planning tax and a function for cross-comparison with real estate acquisition tax.

Company Profile

• Company Name: Mycat Inc.

• Location: 2-7-22 Mita, Meguro-ku, Tokyo

• Business Activities: Planning, development, and operation of AI-powered lifestyle and business support services.

• Corporate Website: https://mycat.business