Hello
First, the profit you have will be taxed at ~30%. The only way around that (that I know of) is putting more expenses on your company side or paying yourself a bigger salary. But since the salary marginal tax + social contribution rate quickly rises above 30%, that cash is better sitting in the company account for now.
Now, what you can do with that cash:
- you can open a company trading account on most major online securities companies (like Rakuten Securities for example) and invest that money
- you can try to negotiate with your owner to put your company name on your rental lease, and pay directly from the company. It raises the expenses on the company side, and you can lower your salary even more, paying much less taxes overall.
- you can hire your wife as an assistant or whatever you need and pay her a salary (for example 2x30万円/month is more tax efficient than 1x60万円/month because you pay taxes separately in Japan)
- probably there are other creative ways to use that cash
Now the next question is: I want to retire/leave, etc... how do I get my money out of the company?
There is the taishokukin system. It was a setup as retirement bonus system for long time employees, but company directors can use it too when they close the company. Here is the official calculation page:
https://www.nta.go.jp/publication/pamph ... l/02_3.htm
When you pay a taishokukin, the receiver pays taxes on it but the taxable amount is reduced by some ridiculous proportions:
- first you get a tax free allowance for 40万円 per year of work in your company. so 10 years => 400万円 are not taxable (it's 70万円 for every year after 20th)
- then you half that, just because
- finally you apply the tax rate on it
If you give yourself a 2000万円 taishokukin after doing your business for 10 years, the tax due will be 121万円 or about 6%.
You can also choose to keep a zombie company and pay yourself a salary every month until retirement age.
My in laws had a successful steel company and invested their profits in rental real estate. Now they just draw a salary from the rental profits every month. I'll probably go back to Europe when I retire, so I think cashing out as a taishokukin will be better.
Taishokukin may have consequences on drawing out from IDECO if you do both at the same time, but I don't know those details.