All of these techniques are entirely routine for the average company with even a semi decent accountant, and only marginally increase the chance of an audit.

You do have to be sure you follow the rules and avoid various gotchas that other people in this section have pointed out, but otherwise it is entirely legal and routine.

No kidding. It's pretty normal for a high-growth company to not turn a profit for years because they keep on taking on expenses to try to grow quickly, and this is explicitly allowed now for R&D.

Actively involved owners live off of a salary paid by the company.