You file your own final tax return (or if the aggregated total of all your “side income” from all sources of side income is <¥200,000 per year and you have no other reason to file a final tax return, then you can choose to just file a resident tax return).
2 comments
Just do your 確定申告 when it’s tax season
“How do I go about declaring it”
You file your own final tax return (or if the aggregated total of all your “side income” from all sources of side income is <¥200,000 per year and you have no other reason to file a final tax return, then you can choose to just file a resident tax return).
“Are there any benefits to doing so?”
A legal requirement.