Real take-home payEstimate income tax, resident tax and social insurance — see what actually lands in your account.
Resident tax shock forecastSee when next year’s resident tax begins and how much to save each month.
Side-income simulatorModel a side gig and see the extra tax and what to set aside.
Built for foreign residentsFirst-year-in-Japan modelling, overseas-income flags, leaving-Japan scenarios, and a plain-English Learn section.
Educational estimates only — not tax, legal, immigration, or financial advice. Confirm important decisions with the National Tax Agency, your municipality, employer, or a qualified tax professional.