The net salary calculator shows no resident tax in your first year in Japan and the full amount "from June" after that. For anyone whose first salary came after January, that second part is off. Resident tax is charged on the previous calendar year's pay by the city you live in on 1 January, and your employer takes it from your salary in 12 parts, June to May.
I built a resident tax planner that works this out from your salary and the month of your first pay in Japan.
When it starts
Say your first salary came in April 2026 and you earn 5,000,000 yen a year. Until May 2027 nothing is taken. From June 2027 it is 13,700 yen in June and 13,400 a month after that, worked out on the nine months you were paid in 2026. From June 2028 it is worked out on a full year: 20,800 in June, then 20,200 a month. Take-home pay drops twice, a year apart.
If the pay of your first months stays under the limit, the planner says so, and the first deduction comes a year later. If you work for yourself, the city sends you a bill to pay in four parts: June, August, October and January.
From the salary calculator
The Year 1 and Year 2 boxes of the net salary calculator now link to the planner, with your salary, age and family filled in. I also fixed the calculator on phones, where the Copy for AI and Share buttons were cut off by the edge of the card.
The planner works in all seven languages of the Hub, with the 2026 rates and Tokyo's rules, like the calculator.
