Without this function, you can only know when you receive your employer's annual tax bill at the end of the fiscal year in July, or you can inquire directly with your employer's accountant.
Many small businesses report tax information once every three months or even once a year, so the tax bureau cannot obtain your tax status in real time. Only at the end of each fiscal year, businesses and individuals, regardless of size, must report Only with the tax summary can the tax bureau calculate your tax situation. Therefore, even if you make a written inquiry, the tax bureau cannot accurately provide your real-time tax information, and you still have to confirm it with your employer.