Japanese citizenship

[JapaneseMike]

One possible downside is that it signs you up to the exit tax, which doesn't apply if you're on a working visa.

Exit Tax applies to PRs and persons on spousal visas also.

Thanks for the correction, have clarified the original. I spend too much time reading this stuff. By working visa, I meant employment-based, rather than personal visas such as spouse and PR, but yes that phrasing was quite misleading.

Also, it applies to any visa holder after 5 years too right? The 'long term resident for tax purposes' clause?

[adamu]

Also, it applies to any visa holder after 5 years too right? The 'long term resident for tax purposes' clause?

That's not my understanding, I'm not sure what that clause is. Do you have a link?

Here's what I have so far
https://retirewiki.jp/wiki/Exit_tax

Question 3 from the FAQ here seems to clear it up (will add to the wiki later)

(注) 国内在住期間の判定に当たっては、出入国管理及び難民認定法別表第一
の上欄の在留資格（外交、教授、芸術、経営・管理、法律・会計業務、医療、研究、教育、企業内転勤、短期滞在、留学等）で在留していた期間は、国内在住期間に含まないこととされています（所令170③一）。
また、平成27年６月30日までに同法別表第二の上欄の在留資格（永住者、永住者の配偶者等、定住者等）で在留している期間がある場合は、その期間は国内在住期間に含まないこととされています（所得税法施行令の一部を改正する政令（平成27年政令第141号）附則８②）。