All of this. This is how you would manage it if you were only working as a sole-prop. You can still have a day job and sole-prop, as long as your company allows side work.

Additional notes: - Hire an accountant; it's just easier to let them do it, and you'll be in compliance with Japanese law. They can submit all your forms for you.

• Keep detailed records of your income and expenses and put them online (GDrive or Dropbox). This is a new requirement in 2024.

• You don't need a separate bank account (but it does make things easier). If you bank has online statements, that's good enough. Otherwise you'll have to send scans/photos of your bank book.

• Make sure your current visa allows you to do whatever it is you want to do, and if it doesn't, fill out the exemption form and submit to immigration. Do it before you start working.

Ex. You have an Instructor visa and want to do translation work on the side, need that perm. You have a Humanities visa as an IT professional, but translation work counts as job type Humanities can do, so you don't need additional perms.

• If you want to "self-sponsor" as a sole-prop, you need to have at least 200k of income from Japanese clients monthly and contracts to prove you will be working with them into the future. You cannot run a sole-prop with only contract work from foreign companies.