Paying off debt vs saving for a house
This is one of the most common financial dilemmas for aspiring homeowners in Canada. The right answer isn’t always “pay off debt first” — it depends on the type of debt, the interest rate, and the cost of waiting.
The core trade-off
| Pay off debt first | Save for a house first |
|---|---|
| Eliminates high-interest costs | Gets you into the market sooner |
| Improves credit score | Starts building equity |
| Increases future mortgage approval amount | Locks in today’s prices (in rising markets) |
| Reduces monthly obligations | Takes advantage of FHSA / RRSP HBP tax benefits |
| Provides peace of mind | Stops paying rent sooner |
The financial math often favours a hybrid approach — paying down the most expensive debt aggressively while saving for a down payment simultaneously.
The interest rate comparison method
The simplest framework: compare the interest rate on your debt to the return on your savings and the cost of delaying homeownership.
Decision matrix by debt interest rate
| Debt interest rate | Recommended approach |
|---|---|
| 20%+ (credit cards) | Pay off first. No savings vehicle returns 20%. Eliminate this before saving. |
| 10–20% (store cards, high-rate LOC) | Pay off first. Still too expensive to carry while saving. |
| 5–10% (personal loans, some LOC) | Hybrid. Split extra cash — 60% to debt, 40% to savings. |
| 3–5% (student loans, low-rate LOC) | Hybrid. Split extra cash — 40% to debt, 60% to savings. |
| 0–3% (car loan promo rates, 0% financing) | Save first. Make minimum payments on debt, maximize savings. |
Why the math favours saving over low-rate debt
If you have a $15,000 student loan at 5.25% interest and you’re saving in a FHSA:
- Cost of carrying the loan for 1 year: ~$788 in interest.
- Benefit of contributing $8,000 to FHSA: $8,000 × 30% marginal rate = $2,400 tax refund + investment growth.
- Net benefit of saving instead of extra loan payments: $1,612+ per year.
Meanwhile, if home prices in your target market rise 4% on a $500,000 home, that’s $20,000 in additional cost for each year you delay.
Worked examples
Example 1: High-interest debt — pay off first
Maya — $12,000 in credit card debt at 21%
| Option A: Save $1,000/month | Option B: Pay debt first, then save |
|---|---|
| Year 1: Save $12,000, still owe ~$10,500 (minimum payments only) | Year 1: Debt eliminated by month 13 |
| Year 2: Save $24,000, still owe ~$8,700 | Year 1.5–3: Save $1,000/month = $18,000 |
| Year 3: $36,000 saved, still owe ~$6,400 | Year 3: $18,000 saved, $0 debt |
| Interest paid on debt (3 years): ~$6,300 | Interest paid on debt: ~$1,400 |
| Net position: $36,000 − $6,400 = $29,600 | Net position: $18,000 + $0 debt = $18,000 but credit score 60+ higher |
On the surface, Option A leaves more cash — but Maya’s TDS ratio with $6,400 in credit card debt means her maximum mortgage is ~$37,600 lower than with zero debt. The credit score difference could also mean a 0.5%+ rate difference, costing $20,000+ over 5 years.
Verdict: Pay off the credit card first.
Example 2: Low-interest debt — save simultaneously
Jordan — $25,000 student loan at 5.25%, $1,500/month to allocate
| Option A: Pay off loan first | Option B: Hybrid (60% savings, 40% extra debt) |
|---|---|
| $1,500/month to loan = paid off in ~18 months | $900/month savings, $600/month to debt |
| Then save $1,500/month for 18 months = $27,000 | After 36 months: ~$32,400 saved, ~$8,000 remaining on loan |
| 36-month position: $27,000 saved, $0 debt | 36-month position: $32,400 saved, $8,000 debt |
| Total interest paid: ~$1,200 | Total interest paid: ~$2,800 |
| Home price increase (4%/yr on $500K): N/A — same timeline | Same timeline — but more savings available sooner |
Jordan’s student loan payment was already factored into the TDS ratio at the regular payment amount — paying it off faster doesn’t dramatically change mortgage approval timing. The hybrid approach builds the down payment faster.
Verdict: Save while making regular loan payments plus a small extra amount.
Example 3: Mixed debt — prioritize strategically
Anika — $8,000 credit card (21%), $15,000 car loan (6%), $2,000/month to allocate
| Month | Credit card | Car loan | Savings |
|---|---|---|---|
| 1–5 | $1,600/month paydown | $400 minimum | $0 |
| 6 (card paid off) | $0 | $400 minimum | $1,600/month |
| 6–18 | $0 | $400 minimum | $1,600/month = $19,200 |
| 19–24 | $0 | Car finishes at month 20 | $2,000/month = $8,000 more |
| 24-month total | Paid off | Paid off (regular schedule) | $27,200 saved |
By not accelerating the 6% car loan and focusing extra cash on the 21% credit card and then savings, Anika reaches a $27,200 down payment in 2 years.
The hidden cost of waiting
One factor many people overlook: home prices don’t wait for you to be debt-free.
| Market appreciation rate | Cost of 1-year delay ($500K home) | Cost of 2-year delay |
|---|---|---|
| 2% | $10,000 | $20,200 |
| 4% | $20,000 | $40,800 |
| 6% | $30,000 | $63,600 |
| 8% | $40,000 | $83,200 |
If paying off all debt takes 2 extra years and prices rise 4% annually, you’ll need an additional $40,800 to buy the same home. That often exceeds the interest saved by becoming debt-free.
Of course, markets don’t always rise — but in most major Canadian markets over the past 20 years, the long-term trend has been upward.
The TDS impact: how much does your debt actually reduce your mortgage?
| Monthly debt payment | Approximate mortgage reduction |
|---|---|
| $100/month | −$16,000 to −$20,000 |
| $200/month | −$32,000 to −$40,000 |
| $300/month | −$48,000 to −$60,000 |
| $500/month | −$80,000 to −$100,000 |
| $1,000/month | −$160,000 to −$200,000 |
If eliminating $300/month in debt payments lets you qualify for $50,000 more mortgage, that could be the difference between affording a 2-bedroom and a 3-bedroom — or between buying and not buying.
Strategies for doing both at once
1. The priority waterfall
Allocate your available cash in this order:
- Emergency fund — $2,000–$5,000 minimum before anything else.
- Employer RRSP match — if available, this is free money (100% return).
- High-interest debt (above 10%) — aggressively pay down.
- FHSA contributions ($8,000/year) — 30–50% instant return via tax refund.
- Medium-interest debt (5–10%) — accelerate payments.
- Additional down payment savings (TFSA, RRSP HBP) — build beyond minimum.
- Low-interest debt (below 5%) — minimum payments only.
2. Use tax refunds strategically
When you contribute to an FHSA or RRSP, use the tax refund to pay down debt:
| FHSA contribution | Tax refund (30% bracket) | Apply refund to credit card at 21% |
|---|---|---|
| $8,000 | $2,400 | Saves $504/year in interest |
| $8,000 (year 2) | $2,400 | Saves another $504 |
This creates a virtuous cycle: savings generate refunds, refunds eliminate debt, less debt improves your mortgage approval.
3. Automate the split
Set up automatic transfers on payday:
- Savings (FHSA or HISA): Transfer X% of net income automatically.
- Extra debt payment: Transfer Y% automatically on the same schedule.
- Don’t rely on what’s left over — automate both priorities.
4. Side income acceleration
Direct any variable income (bonuses, tax refunds, side hustle income) entirely toward whichever priority has the highest current impact:
- If you’re above 10% debt interest: side income → debt.
- If debt is manageable: side income → savings to reach the down payment target faster.
Minimum down payment targets
| Home price | Minimum down (5%) | Down + closing costs (est.) |
|---|---|---|
| $300,000 | $15,000 | $22,000–$25,000 |
| $400,000 | $20,000 | $29,000–$33,000 |
| $500,000 | $25,000 | $37,000–$42,000 |
| $600,000 | $30,000* | $45,000–$51,000 |
| $800,000 | $55,000** | $75,000–$83,000 |
Above $500K: 5% on first $500K + 10% on remainder. *$800K: $25,000 + $30,000 = $55,000.
Don’t aim for these exact numbers — build a buffer of $5,000–$10,000 above your target for unexpected costs.
Decision flowchart
Step 1: Do you have any debt above 20% interest? → Yes: Pay it off before saving. No exceptions. → No: Continue to Step 2.
Step 2: Do you have any debt above 10% interest? → Yes: Allocate 80% of extra cash to debt, 20% to savings. → No: Continue to Step 3.
Step 3: Is your total debt payment above $500/month? → Yes: Hybrid approach — 50/50 split between debt and savings. → No: Continue to Step 4.
Step 4: Is your debt interest rate below 5%? → Yes: Minimize extra debt payments. Focus on savings and FHSA. → No: Hybrid — 40% to debt, 60% to savings.
Common mistakes
| Mistake | Why it hurts | Better approach |
|---|---|---|
| Waiting to be 100% debt-free before saving anything | Delays homeownership by years; market prices rise | Start saving early, even small amounts |
| Draining down payment to pay off low-rate debt | Delays purchase; may lose FHSA/HBP tax benefits | Keep the down payment; make regular debt payments |
| Ignoring the FHSA tax refund | Missing 30–50% instant return | Contribute even $200/month to FHSA |
| Paying minimums on 20%+ credit cards while saving | Interest costs dwarf savings returns | Eliminate high-rate debt first |
| Not checking how debt affects mortgage approval | May save enough but not qualify | Run a TDS calculation early |
| Opening new debt while saving for a house | Resets the problem | Freeze discretionary spending |