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The Canadian dividend tax credit: Why is it that someone can earn a lot in dividends but pay no/little tax?
The profits that the corporation had to earn to be able to pay you "eligible" dividends for the dividend tax credit were already taxed, and at a somewhat high corporate rate, in the case of large public companies with big profits. The dividend tax credit, which permits an individual to earn a lot from dividends and not pay any personal income tax, essentially recognizes that the profit making up the dividend was already highly taxed to begin with via corporate income tax.  It aims to eliminate double-taxation. FWIW, if you own and run a small private business in Canada and pay yourself a dividend, such dividends are considered "non-eligible", i.e. you don't get as much a benefit from the dividend tax credit, since small business corporate income tax rates are much lower.