The Key Factors
| Factor |
Favors RRSP |
Favors Mortgage |
| High marginal tax rate |
✓ |
|
| Low mortgage rate |
✓ |
|
| Long time to retirement |
✓ |
|
| Employer RRSP match |
✓ |
|
| High mortgage rate |
|
✓ |
| Low tax bracket |
|
✓ |
| Near retirement |
|
✓ |
| Risk averse |
|
✓ |
The Math Comparison
Scenario: $10,000 to Allocate
| Option |
RRSP |
Mortgage |
| Amount invested/paid |
$10,000 |
$10,000 |
| Tax refund (40% bracket) |
$4,000 |
$0 |
| Effective cost |
$6,000 |
$10,000 |
10-Year Comparison
Assumptions:
- $10,000 annual contribution/payment
- 40% marginal tax rate
- 6% investment return
- 5% mortgage rate
| After 10 Years |
RRSP |
Mortgage Paydown |
| Amount contributed |
$100,000 |
$100,000 |
| Tax refunds received |
$40,000 |
$0 |
| Net cost to you |
$60,000 |
$100,000 |
| RRSP balance (6% return) |
~$139,000 |
N/A |
| Interest saved |
N/A |
~$28,000 |
| Mortgage reduction |
N/A |
$128,000 |
The Hybrid Approach
| Year |
RRSP Contribution |
Tax Refund |
Apply to Mortgage |
| 1 |
$10,000 |
$4,000 |
$4,000 |
| 2 |
$10,000 |
$4,000 |
$4,000 |
| … |
… |
… |
… |
| 10 |
$10,000 |
$4,000 |
$4,000 |
| Total |
$100,000 |
$40,000 |
$40,000 |
Result: RRSP grows AND mortgage reduced by $40,000.
When RRSP Wins
High Tax Bracket Advantage
| Tax Bracket |
RRSP Refund per $10K |
Effective Cost |
| 20% |
$2,000 |
$8,000 |
| 30% |
$3,000 |
$7,000 |
| 40% |
$4,000 |
$6,000 |
| 50% |
$5,000 |
$5,000 |
Higher bracket = bigger RRSP advantage.
Employer Match
| Scenario |
RRSP Value |
| You contribute $5,000 |
$5,000 |
| Employer matches 100% |
+$5,000 |
| Total RRSP |
$10,000 |
| Instant return |
100% |
Always take employer match first — it’s free money.
Expected Returns vs Mortgage Rate
| Investment Return |
Mortgage Rate |
Winner |
| 7% |
5% |
RRSP |
| 7% |
7% |
Tie (risk-adjusted: mortgage) |
| 5% |
6% |
Mortgage |
When Mortgage Wins
Low Tax Bracket
| Tax Bracket |
RRSP Advantage |
| Under 25% |
Minimal — consider TFSA or mortgage |
| 25-35% |
Close call |
| Over 35% |
RRSP usually wins |
High Mortgage Rate
| Mortgage Rate |
Guaranteed Return |
| 3% |
Pay 3% guaranteed |
| 5% |
Pay 5% guaranteed |
| 7% |
Pay 7% guaranteed — beats most investments |
Near Retirement
| Years to Retirement |
Consideration |
| 20+ years |
RRSP has time to compound |
| 10-20 years |
Either can work |
| Under 10 years |
Debt-free in retirement has value |
Peace of Mind
| Factor |
Value |
| Guaranteed return |
Mortgage rate |
| No market risk |
Sleep better |
| Debt-free feeling |
Psychological benefit |
| Flexibility |
Lower payment = less stress |
Decision Framework
Step 1: Get Free Money First
| Priority |
Action |
| 1 |
Employer RRSP match — always |
| 2 |
Then decide RRSP vs mortgage |
Step 2: Consider Tax Bracket
| Your Bracket |
Recommendation |
| High (40%+) |
RRSP likely better |
| Medium (30-40%) |
Do the math, hybrid approach |
| Low (under 30%) |
Consider TFSA or mortgage |
Step 3: Compare Rates
| If retirement horizon is long… |
|
| Expected return > mortgage + 1-2% |
RRSP |
| Expected return ≤ mortgage rate |
Mortgage |
Step 4: Consider Risk Tolerance
| If you… |
Then |
| Can stomach market volatility |
RRSP may be fine |
| Prefer certainty |
Mortgage paydown |
Hybrid Strategy: The Best of Both
How It Works
| Step |
Action |
| 1 |
Maximize RRSP contribution |
| 2 |
Claim tax deduction |
| 3 |
Apply refund to mortgage |
| 4 |
Repeat annually |
Example Calculation
| Annual Amount |
Allocation |
| Available |
$15,000 |
| To RRSP |
$15,000 |
| Tax refund (40%) |
$6,000 |
| To mortgage |
$6,000 |
| Total deployed |
$21,000 |
TFSA as the Alternative
When TFSA Beats Both
| Situation |
Why TFSA |
| Low tax bracket now |
No RRSP refund benefit |
| Expect higher income later |
Save RRSP room |
| Want accessibility |
No withdrawal restrictions |
| Below TFSA limit |
Tax-free growth |
Order of Priority
| Priority |
Account |
When |
| 1 |
Employer RRSP match |
Always |
| 2 |
High-interest debt |
Always |
| 3 |
TFSA |
Low tax bracket |
| 3 |
RRSP + refund to mortgage |
High tax bracket |
| 4 |
Extra mortgage payments |
After above |