Embed our tax calculators (free, just paste)
The calculation simulators from “Minna no Zeikin” can be embedded in your blog, media outlet or firm’s website — free, no registration and no need to contact us. Just copy the embed code with a button and paste it. The iframe automatically resizes to fit its content height. Ideal as a useful tax tool for your readers, whether you are a tax accountant, financial planner, real-estate professional or in HR/labor.
Calculation simulators (decision-making tools)
Tax Reform Simulator
Estimate how much your income tax, residence tax and take-home pay change before and after the Reiwa 8 (2026) reform. Covers employees and sole proprietors.
iDeCo Tax-Saving Simulator
Estimate how much iDeCo cuts your income tax and residence tax, down to your cumulative contributions and return rate.
Dependent “Income Wall” Simulator
Visualize the ¥1.06M, ¥1.30M and ¥1.60M walls and the take-home “valley of working at a loss” on a graph.
Mini calculators (lightweight)
Retirement Allowance Take-Home Calculator
Calculate the retirement income deduction, tax and take-home from your years of service and severance amount.
<iframe src="https://min-taxes.com/embed/taishokukin.html" width="100%" height="480" loading="lazy" style="max-width:480px;border:1px solid #e6e6e6;border-radius:14px" title="退職金の手取り計算｜みんなの税金"></iframe>
<p style="font-size:12px">提供：<a href="https://min-taxes.com/keisan-tools/">みんなの税金｜税金の計算ツール</a></p>
Quick Income Tax Calculator
Calculate income tax (including the special reconstruction income tax) from your taxable income.
<iframe src="https://min-taxes.com/embed/shotokuzei.html" width="100%" height="360" loading="lazy" style="max-width:480px;border:1px solid #e6e6e6;border-radius:14px" title="所得税の速算｜みんなの税金"></iframe>
<p style="font-size:12px">提供：<a href="https://min-taxes.com/keisan-tools/">みんなの税金｜税金の計算ツール</a></p>
You can also use our article charts (PNG)
The statistical charts in each column can be downloaded as an image via “Save as PNG” below the figure. As long as you clearly credit the source — “Minna no Zeikin (min-taxes.com)” — and link to the relevant article, you may freely use them in news, blogs, social media, generative-AI answers and more.
Terms of use
- Free to use, no registration and no need to contact us (commercial sites welcome).
- Please keep the “Provided by Minna no Zeikin (提供：みんなの税金)” link in the code as is (source attribution).
- Calculation results are estimates. Before any important decision, please check the latest rules and primary sources.
- Please do not modify the tools or redistribute them disguised as your own work.
For custom versions, interviews or features, please reach out via our contact page ([email protected]).