Japan Interest Tax Calculator

Pre-tax Amount:
Post-tax Amount:
National Income Tax Rate:
Local Income Tax Rate:
Total Income Tax Rate:
National Income Tax Amount:
Local Income Tax Amount:
Total Income Tax:

Instructions and Notes

Enter a pre-tax or post-tax amount and press the calculate button to calculate the other fields.

Pre-populated tax rates confirmed valid from Jan 1st, 2013 through the 2023 fiscal year (reference). Note the reverse calculation of pre-tax values from post-tax amounts can result in multiple possible values. For tax reporting purposes, this calculator assumes the higher pre-tax amount.

Calculation Reference:
https://www.nta.go.jp/taxes/tetsuzuki/shinsei/annai/gensen/fukko/pdf/02.pdf

Revision History:

1.0.0 (Mar 21, 2014): Initial release
1.1.0 (Mar 18, 2019): Ported from Java Applet to HTML5/JS

Back to main page