If you are a sole-proprietor and you have more than 10 million yen worth of sales, then you will be obligated to file for consumption tax as well as individual income tax.
Usually filing for consumption tax happens two years from the year when you realize these sales.
For example, if your sales in 2020 were more than 10 million yen, then you will be filing for consumption tax for 2022 by March 31st of 2023. Again, there are some exceptions.
For your individual case and for the preparation of your tax returns, please feel free to contact us.