Taxes on remote work, Japanese spouse

Considering moving from the US to Japan to work remotely (IT work) and need to determine how much taxes will be before we start serious planning. The company I work for will let me work remotely from anywhere, but since it is my choice they are not taking on any of the fact-finding on taxes, insurance, etc. Another person in the company is working remotely from Australia. The company has no presence there either, I was told he was changed from employee to contractor to simplify things; I don't know his specifics. Anyway, I will need to do all the groundwork and provide all the answers to the company.

My Situation:
A. I am a US Citizen
B. My wife is a Japanese citizen, so I plan on getting a Spousal Visa (our two kids have dual citizenship)
C. The company I work for has no presence in Japan
D. My work would be 100% remote via the internet on assets in the US
E. All payroll deposits will be made to a US bank
F. We are planning on staying in Japan for about 5 years

My research tells me that I'd have no work restrictions on a Spousal Visa. However, it is not clear to me what that means as far as taxation.

If 100% of my income were to be earned via remote work in the US from Japan
Questions:
1. Would the US company I work for need to file anything different?
2. Is my income considered earned in the US or Japan?
3. Would I pay taxes to both the US and Japan? What are the rates?
4. Does having a Spousal Visa mean one is a resident?

Is there a good resource to anyone can recommend?

Thanks in Advance!

This is the national tax authorityfs classification of what income will be taxable and what not. (Note that the terms gresidenth gpermanent resident,h etc., are not the same as the immigration authorityfs definitions, but this one is for taxation purposes.

https://www.nta.go.jp/english/taxes/individual/pdf/a-4.pdf

According to this, it looks like the first year you will have not any income tax obligations. (gNon-residenth)

From the second year, you will have to declare and pay income taxes on the portion of your salary that you send over to Japan (for your living expenses, etc.). (gNon-permanent resident,h gforeign source incomeh column)

Your resident tax will be determined based on your taxable income.

I have no idea about US - Japan tax treaty, so you might need to consult a tax accountant separately on how this is handled. Your employer will file the salary they pay to you as gpaying into an US accounth as if you were in the US, so I guess theyfd do the same as theyfve always done (and I assume they would not want to do anything extra). Best wishes.

Ron, I am going through the same thing! If you figure it out, could you please reach back to me! I would really appreciate it!

-Nelson

Has anybody made progress on this? I'm facing the same problem now and would love to find out what conclusion everybody reached.