At the time of declaration, it is necessary to declare in accordance with the provisions of the tax bureau. Small-scale projects are generally declared quarterly and within 15 days after the end of the quarter. Log in to the online declaration system, and once the information to be declared is approved, it can be filled in according to the regulations.
It's not too much trouble to do accounts. You have no business. If there is, do it. If not, use last month's report instead. The first investment is natural:
Debit: bank deposit
Loan: paid-in capital
Remember what you have in the future.