Moving away for a couple of years.

[RetireJapan]

Just a reminder that even though you move away for a couple of years, you will still be liable for Residents' Taxes payments for Tax Year 2021, which are charged in arrears, and which you will have just started paying (July 2022 to June 2023) and then for Residents' Taxes payments for income in this Tax Year 2022 which will be payable (July 2023 to June 2024).

My understanding is that as long as you move before the end of December this year, you will not be liable for local inhabitants' tax next year.

Also your broker may ask you to close your investment accounts (taxable and NISA) if you leave Japan. iDeCo can be left as is and no contributions will be made while you are non-resident.

[Tkydon]

Yes, that's right. If you are not registered in any Ku-shi-son-cho on 1 Jan 2023, you would not be liable for Residents' taxes on 2022 income, but you may have a National Tax filing obligation. You should appoint a tax representative before you leave.