Oh there's lot of great tooling now for creating a company (angellist stack, stripe atlas, etc etc) and doing payroll (gusto). I'm paying corporate taxes for the first time and hired an accountant. Although it seems there's no easy solve for bookkeeping/labelling expenses - only I know what I spent the money on. I had a lawyer create an option pool.

Most of this legal business stuff is the worst though. Governments have terrible UX, but its bad enough industries have formed to make it easier.