For example, if you have $ 3,000 in margin interest but net investment income of only $ 1,000, you can only deduct the $ 1,000 in investment interest in the current year. (turbotax.intuit.com)
The government also recently introduced a number of income taxes, including a 1 % withholding tax on earnings of investments incomes of ordinary citizens. (ghanapoliticsonline.com)
If you invested that same $ 5,000 outside an RRSP, every year you'd be taxed on investment income earned by that capital. (business.financialpost.com)