RRSP vs mortgage repayment vs TFSA: what to prioritize as a Quebec taxpayer?

When you have money left over at the end of the month, should you contribute to an RRSP, pay down your mortgage faster, or fill your TFSA? For a Quebec taxpayer, the answer depends on your tax rate, debt level, and plans.

This guide does not offer a magic formula, but a simple framework to discuss with a professional.

1. What each tool does

• RRSP:

  • Contribution is deducted from your taxable income (federal + Quebec).
  • You get immediate tax savings (potential refund).
  • Withdrawals are taxed later.

• TFSA:

  • No deduction at contribution.
  • Growth and withdrawals are tax-free.

• Mortgage repayment:

  • Reduces your debt and future interest.
  • No direct tax deduction for a principal residence.

For a plex, part of the mortgage interest related to the rental portion may be deductible, but principal is still not.

2. Simple numeric comparison

Assume:

• Taxable income: $90,000.
• Applicable combined marginal tax rate (federal and Quebec): verify it for the relevant tax year and your complete return.
• Surplus available: $6,000 per year.

Option A: $6,000 to RRSP

• Deduction of $6,000.
• Estimated tax reduction: $6,000 × your applicable combined marginal rate. The actual refund or balance owing depends on your complete return.
• You could reinvest the refund (RRSP again, TFSA, or mortgage repayment).

Option B: $6,000 to TFSA

• No immediate refund.
• But all growth and withdrawals will be tax-free.

Option C: $6,000 to mortgage repayment

• If the rate is 5%, an extra $6,000 payment saves about $300 of interest in the first year (6,000 × 5%), more over time.

3. A possible order of priority

In practice, many Quebec taxpayers blend:

1. Emergency fund in a TFSA (3–6 months of expenses).
2. Targeted RRSP contributions when your marginal rate is high (for example, a year with a large bonus). See also:
   • How your Quebec marginal tax rate affects the size of your RRSP refund (with examples).
3. Accelerated mortgage payments when interest rates are high or debt level feels uncomfortable.

4. Special case: plex owners

If you own a duplex or triplex:

• A portion of the mortgage interest related to the rental part is usually deductible.
• The principal portion is not.

Before making a large lump-sum payment, consider:

• Impact on your rental cash flow.
• Balance with RRSP/TFSA contributions.

5. Common mistakes

• Contributing to RRSP in a very low-income year, when tax savings will be small but withdrawals later may be taxed at a higher rate.
• Ignoring the TFSA as a flexible safety net before locking too much into the mortgage.
• Forgetting to revisit the strategy when life changes (new child, buying a plex, income jump or drop).

Call to action

If you live in Quebec and are wondering how to divide your surplus between RRSP, TFSA, and mortgage repayment, TaxCove can build a quantified plan based on your salary, rental income, and goals. To start the conversation, fill out the form on the secure tax intake form page.

Important notice

This article provides general information only and does not constitute investment or personalized tax advice. Contribution and repayment decisions must take into account your overall situation (debts, risk tolerance, time horizon). Always consult a qualified professional before making major commitments.