Artists and Taxes!

Hey! First post here. I've been freelancing for a couple of years, and taxes have been kind of brutal. I was curious, how does this work for gaming artists? Or, I guess artists hired by Blizzard/Riot, etc? Are they in-house and paid per hour, or is it commission based? As I understand it, freelancing is chalked up to "owning your own business". If you work steadily for a company as an artist, do you become free from that "own business" tax and pay as someone working working for a company instead?

And do you have any tips for freelancers to ease the burden of costs? Thanks!