I've been using an LLC for my ad-supported websites' income, paid writing, and side consulting work for a few years. I'm far from a financial expert, so I coul

I've been using an LLC for my ad-supported websites' income, paid writing, and side consulting work for a few years. I'm far from a financial expert, so I could be wrong, but my impression is that it's been very beneficial in the finance department. You can purchase an awful lot of things with effectively pre-tax dollars if they are legitimate business expenses (like that new MBP); things that you may have normally purchased with post-tax funds anyway. I haven't needed to invoke its liability protections, but I've been told (by counsel) that the most important thing is to keep your money well separated. If you intermingle your funds or use business funds for personal expenses, that can be used to pierce the corporate veil and nullify your protection.