RRSP vs Paying Down Your Mortgage: Which Is Smarter? (2026)

This page compares putting spare cash into an RRSP with paying down a mortgage faster. It is one of the where-to-save comparisons in the RRSP and RRIF guide directory.

This is a common dilemma for Canadian homeowners, and neither answer wins every time. In a 40% tax bracket, a $10,000 RRSP contribution costs you $6,000 after the refund, while a $10,000 mortgage payment uses the full $10,000 of after-tax dollars. The RRSP money is taxed again when you withdraw it, though, so the refund alone doesn’t decide it: what matters is your investment return versus your mortgage rate, and your tax rate now versus in retirement. The hybrid approach (contribute to your RRSP and apply the refund to your mortgage) puts $10,000 into the RRSP and $4,000 against the mortgage for $10,000 out of pocket. But if your mortgage rate exceeds 6–7% or you’re in a low tax bracket, the guaranteed return from paying down debt may beat the uncertain market returns in your RRSP.

The Key Factors

The Math Comparison

Scenario: $10,000 to Allocate

10-Year Comparison

Assumptions:

• $10,000 annual contribution/payment
• 40% marginal tax rate
• 6% investment return
• 5% mortgage rate
• Contributions and prepayments made at the start of each year, compounded annually
• RRSP withdrawn later at the same 40% rate

The RRSP figure is before tax. Taxed at the same 40% on the way out, the $60,000 you actually paid grows to about $83,830, which is 6% a year; the $100,000 put against the mortgage saves 5% a year. With the same tax rate at both ends, the RRSP comes out ahead here only because the 6% return beats the 5% mortgage rate, not because of the refund. Formulas: $10,000 × ((1.06^10 − 1) ÷ 0.06) × 1.06 = $139,716; $10,000 × ((1.05^10 − 1) ÷ 0.05) × 1.05 = $132,068.

The Hybrid Approach

Result: RRSP grows AND mortgage reduced by $40,000.

When RRSP Wins

High Tax Bracket Advantage

Higher bracket = bigger refund today. The refund becomes a real edge over the mortgage only when your tax rate at withdrawal is lower than it is now.

Employer Match

Taking the employer match first is usually the priority — it’s essentially free money.

An employer RRSP match is a 50–100% guaranteed return on day one, which no mortgage paydown or market investment can replicate. If your employer matches 100% up to 5% of your salary, that’s $5,000 of employer money a year on a $100,000 income, which skipping the match to pay down the mortgage would give up. Maximizing the match first is generally worth doing, then the choice between additional RRSP contributions and extra mortgage payments can be based on your tax bracket and mortgage rate.

Expected Returns vs Mortgage Rate

When Mortgage Wins

Low Tax Bracket

High Mortgage Rate

Near Retirement

Peace of Mind

Decision Framework

Step 1: Get Free Money First

Step 2: Consider Tax Bracket

Step 3: Compare Rates

Step 4: Consider Risk Tolerance

Hybrid Strategy: The Best of Both

How It Works

Example Calculation

TFSA as the Alternative

When TFSA Beats Both

Order of Priority

The Bottom Line

If you’re in a 35%+ tax bracket with a mortgage rate under 5–6%, the RRSP plus refund-to-mortgage hybrid strategy is often a strong approach: contributing to the RRSP, claiming the deduction, and directing refund dollars to the mortgage as a lump-sum prepayment. If you’re in a lower bracket, maxing out your TFSA first and using extra cash for mortgage prepayments is often more effective. Both options build wealth, and a split between them is also a reasonable approach.

Related Resources

• RRSP Guide
• TFSA vs RRSP
• Mortgage Calculator
• Marginal Tax Rates Canada
• RRSP Contribution Limit
• Mortgage Payment Frequency Guide