Probably this is a trivial question to you (and others who've been running business), but allow me to ask this question. I just started learning all these things ...

Suppose that the company will make its first income a month from now; the company deposits a check, receives a payment via EFT, etc.

Q1. If I want the company to be taxed as a sole proprietorship, do I need to file tax for it this April?

q1.2. ... or at the end of the year?

Q2. If I want the company to be taxed as a corporate entity, do I need to file tax for it this April?

Q2.2. ... or at the end of the year?