Question: how much tax do you have to pay when you sell a business?
Answer: You'd likely be subject to at least a 46% tax rate if you live in Ontario, which would equal $138,000 in taxes ($600K/2 x 46% = $138,000). Fortunately in Canada, the first $800,000 of profit from selling your business is tax-free, often referred to as the lifetime capital gains exemption.