The answer is yes, there are tax advantages to incorporation. Mostly, it allows you to defer income tax, since you pay a lower corporate tax rate, which can be between 14.5% and 22%, or 26%, depending on the criteria. By comparison, an individual is taxed according to a progressive rate which can reach its maximum around $200,000. This can vary by province, but that rate can reach 53%. So there is an advantage to deferring the second part of your tax till later.
The other advantage of the current system is that it allows you to allocate your income among several people, which is impossible to do as an individual or even as an entrepreneur. An individual entrepreneur can without any problem pay salaries, but he cannot divide up the surplus. The corporate vehicle makes that possible.
The Supreme Court recognized income splitting in a few cases, such as in the McClurg and Neuman cases, and so this is legal. The only thing needed to receive a dividend is to be a shareholder. The Supreme Court ruled that it was not necessary that there be a contribution to the business.
And so a wage earner who earns $200,000 a year has no opportunity to split his income, as opposed to an incorporated entrepreneur who may do so.
That is my answer.