Quote from TheShaman:
Allthough corporate tax is much lower than personal income tax, you end up getting double taxed as a corporation, so when you pay yourself the money it gets taxed again... so i can't see how incorporating could save you that much more tax than say if you declared yourself as self-employed, both you can deduct expenses, so same thing.
When you pay yourself a salary, that is deducted as an expense for the company (and therefore not taxable for the company). It is only taxed for you as an employee. You get to retain the rest of the profit in the company (less the 19% or so company tax) which you can use to build up your investment. Yes, eventually you may need to take the profit out (as dividend), at which point you pay income tax (less the company tax already paid - at least that is how tax on dividend is structured). The advantage is being able to defer the tax (not avoiding it), much like a registered retirement plan.