Using e-Tax from a non-supported browser

Japan’s online tax filing system, e-Tax, only supports a handful of operating systems and browsers:

  • Windows 10 or 11 with either Microsoft Edge or Google Chrome
  • MacOS 12-15 with Safari

(Moreover officially the operating system has to be set to Japanese, though I don’t think they check this one.)

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Calculating and declaring capital gains tax in Japan

Last year I sold some ETFs in my Interactive Brokers account, which doesn’t withhold taxes in Japan, so I had to report it in my tax return (確定申告) and pay tax on it. In this post I’ll share how I went about this.

This is not tax advice, and it might be incorrect/incomplete or simply doesn’t apply to your situation. Do your own research and do not follow this blindly.

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Medical expense tax deduction in Japan (医療費控除)

In Japan if one pays more than 100,000 yen of medical expenses in a calendar year, they can deduct it from their pre-tax income (usually leading to an income tax refund). In this post I’ll attempt to summarize the rules of this.

As with all my posts, this is not tax advice and do your own research before making any decision. Also if you find any inaccuracy or mistake, please leave a comment at the end, so that I can correct it.

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Home loan tax deductions in Japan (as of 2024)

Japan has a system that provides income tax deduction for people with a home mortgage in the first years of the mortgage (住宅ローン減税). The rules have changed in the past, and which rules apply depends on when one bought/built their home. In this post I’ll attempt to summarize the rules applicable to a home acquired in 2024. As with all my posts, this is not tax advice and do your own research before making any decision. Also if you find any inaccuracy or mistake, please leave a comment at the end, so that I can correct it.

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Adding Furusato nozei to e-Tax

How to indicate furusato nozei when filing taxes online. (To learn about furusato nozei, see Furusato nozei - end to end guide.)

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Furusato nozei - end to end guide

What is furusato nozei, a bit of history, and how you can do it end to end. This won’t be short, but I try my best to provide the full picture with all the details. While I do my best to keep this information accurate, if you find any inaccuracies, please let me know.

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