Tkydon wrote: ↑Thu Dec 29, 2022 5:10 pm
Viralriver wrote: ↑Fri Dec 30, 2022 1:53 am
Are you sure? I did the calculation and adding in those payments add up exactly to what shows under 社会保険料等の金額 for my 2021 源泉.
OK, in that case, you didn't reach the max.
Your 社会保険料等の金額 likely comprises your health insurance payments (健康保険料), national company workers pension payments (厚生年金保険料), and employment insurance payments (雇用保険料).
The former two are capped for people with high salaries: for under 40s in Tokyo 健康保険料 maxes at 68,179円 a month (salaries over 1,355,000円 per month). 厚生年金保険料 maxes out at 59,475円 per month (salaries over 635,000円 per month).
Employment insurance 雇用保険料 does not have a cap: it's just a flat rate of 0.5% of salary each month (which increased from 0.3% a month from Oct 1st this year).
So it's likely you've reached the max for health & company pension payments - check your payslips, they should show 68,179円 & 59,475円 every month. But employment insurance payments should vary each year if your salary/stock income fluctuates.
Viralriver wrote: ↑Thu Dec 29, 2022 4:53 pm
It does seem that my "donatable amount" decreases as I put in my dependents even with a total salary of ~22.5m. So I guess this is either A) it affects it somewhat, or B) the simulators haven't taken it into account.
Your dependent payments should be lowering your taxable income, so your furusato nozei limit should go down when you add these numbers into the calculation.
Viralriver wrote: ↑Thu Dec 29, 2022 4:27 pm
Secondly the simulator asks for my 社会保険料等の金額 - I see this is the total health, welfare, employee insurance and DC plan contributions I've made over the year, so I can calculate this myself without the 源泉. Anything I should be aware of?
DC plan contributions should go under the 小規模企業共済等掛金控除 deduction, but putting them in the 社会保険料等の金額 box on the calculator might not affect the final result I guess.