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 | A common approach (the splits are examples, not rules) |
|---|---|
| 20%+ (credit cards) | Pay off first. No savings vehicle reliably returns 20%. |
| 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% (provincial student loans that charge interest, low-rate LOC) | Hybrid. Split extra cash — 40% to debt, 60% to savings. |
| 0–3% (federal student loans, which charge no interest; 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 ~$10,300 (minimum payments of 3% of the balance) | Debt paid off in month 14 ($1,000 a month) |
| Year 2: Save $24,000, still owe ~$8,900 | Months 15–36: save $1,000 a month |
| Year 3: $36,000 saved, still owe ~$7,600 | Year 3: about $22,000 saved, $0 debt |
| Interest paid on debt (3 years): ~$6,100 | Interest paid on debt: ~$1,600 |
| Net position: $36,000 − $7,600 = $28,400 | Net position: about $22,000, and no debt |
On the surface, Option A leaves more cash, but the $7,600 still on the card adds a payment of about $228 a month (3% of the balance) that lenders count; if her total debt ratio is the limit, that cuts the mortgage she qualifies for by about $32,600 at a 6.99% qualifying rate. A cleaner credit record may also help her rate.
In this example: paying off the card first leaves Maya less cash but no debt payment counting against her mortgage approval.
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, ~$5,900 remaining on loan |
| 36-month position: $27,000 saved, $0 debt | 36-month position: $32,400 saved, ~$5,900 debt |
| Total interest paid: ~$1,000 | Total interest paid: ~$2,500 |
| 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.
In this example: saving while making regular loan payments plus a small extra amount builds the down payment faster.
Example 3: Mixed debt — prioritize strategically
Anika — $8,000 credit card (21%), $15,000 car loan (6%), $2,000/month to allocate
| Months | Credit card | Car loan ($400/month) | Savings |
|---|---|---|---|
| 1–6 | $1,600/month; paid off in month 6 | $400 minimum | $0 |
| 7–24 | $0 | $400 minimum | $1,600/month = $28,800 |
| After 24 months | Paid off | About $6,700 left (the loan runs 42 months at $400) | About $28,800 saved |
By not speeding up the 6% car loan, and putting the extra cash on the 21% card and then into savings, Anika has about $28,800 toward a down payment after two years while the car loan runs to term.
What waiting costs if prices rise
Waiting to become debt-free has a cost if home prices rise in the meantime:
| 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 | $61,800 |
| 8% | $40,000 | $83,200 |
If paying off all debt takes 2 extra years and prices rise 4% a year, the same home costs $40,800 more; compare that with the interest you’d save by clearing the debt first. Prices can also stay flat or fall, which makes waiting cheaper, so the table shows a range rather than a forecast.
The TDS impact: how much does your debt actually reduce your mortgage?
| Monthly debt payment | Mortgage you no longer qualify for (6.99% qualifying rate) | (5.25% qualifying rate) |
|---|---|---|
| $100/month | about $14,300 | about $16,800 |
| $200/month | about $28,600 | about $33,600 |
| $300/month | about $42,900 | about $50,300 |
| $500/month | about $71,400 | about $83,900 |
| $1,000/month | about $142,900 | about $167,800 |
When your total debt service ratio is the limit; 25-year amortization, semi-annual compounding.
If eliminating $300 a month of debt payments lets you qualify for $40,000 to $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
One common order for spare cash:
- Emergency fund: a starter cushion before anything else.
- Employer RRSP match: matched contributions are an immediate return (100% on a dollar-for-dollar match).
- High-interest debt (above 10%) — aggressively pay down.
- FHSA contributions (up to $8,000 a year): the deduction is worth your marginal tax rate.
- 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 | $35,000* | $49,000–$55,000 |
| $800,000 | $55,000** | $75,000–$83,000 |
Above $500,000: 5% on the first $500,000 + 10% on the remainder. *$800K: $25,000 + $30,000 = $55,000.
A buffer above these amounts helps with costs that come up at closing.
Common mistakes
| Mistake | Why it hurts | Better approach |
|---|---|---|
| Waiting to be 100% debt-free before saving anything | Can delay buying by years, and prices may rise meanwhile | 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 a refund at your marginal tax rate on every dollar contributed | Even small FHSA contributions earn the deduction |
| 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 |
Related pages
Sources
The figures and rules on this page come from these sources, last checked against them between August 29, 2026 and September 25, 2026. How we check facts.
- Canada Revenue Agency: FHSA: Participating in your FHSAs
- CMHC: Calculating GDS / TDS
- Financial Consumer Agency of Canada: How much you need for a down payment