Capital gains tax is a government tax on the profits realized on the sale of an appreciating asset.
In real estate today, if you sell an investment property for MORE than your acquisition cost, you will realize that capital gain and be taxed accordingly.
In Canada, the capital gains tax is 50% on HALF of any profits gained at the time of sale.
Remember, capital gains tax is only payable on the appreciating value, and not the full sale price.
Corporate tax rates will differ if your investment is held in a company name.