Observed arrival · 2026-10-19
Omotedaka makes Japanese tax forms a worked lesson
A Japanese-language learning site traces how income, deductions, and taxes connect across income-tax forms, with examples and browser-based calculators.
- For
- Japanese employees with side income and sole proprietors
- Worth noticing
- A fictional filer’s example follows ¥5.6 million in salary and side-business sales to ¥4,484,927 after specified expenses, premiums, and income tax.
Field notes
The site maps income, deductions, and tax to named entries on Japan’s first and second income-tax return forms, and also links to white-return statements and blue-return financial statements. Its employee example excludes resident tax and explicitly distinguishes deductions used for tax calculation from money actually paid out. The homepage presents its calculators as estimates and says the site is for learning, not filing or individualized tax advice.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue