For Canadian investors, the perennial debate centres around prioritizing the Tax-Free Savings Account (TFSA) or the Registered Retirement Savings Plan (RRSP).
While both instruments offer tax-advantaged compounding, their tax timing mechanisms are polar opposites:
- RRSP: Delays taxation. Contributions are deductible against your current marginal income tax rate, but all withdrawals in retirement are treated as taxable income.
- TFSA: Pre-taxation. Contributions are made with after-tax dollars, but capital gains, interest, and withdrawals are 100% tax-free forever.
The Golden Marginal Tax Rate Decision Matrix
- If your current marginal tax bracket is higher than your expected retirement bracket: Prioritize RRSP. You harvest an immediate tax refund at your peak earning rate and withdraw at a lower bracket later.
- If your income is below $55,000 or you anticipate significant earnings growth: Prioritize TFSA. Avoid burning valuable RRSP deduction room when in a lower tax bracket.
- If holding US dividend-paying equities: The IRS recognizes the RRSP as a pension account under the Canada-US tax treaty (exempt from the 15% non-resident withholding tax), whereas TFSAs are not recognized, incurring a 15% dividend drag.
Next up: How to track your official CRA My Account cumulative TFSA contribution limit without overcontributing.