Mortgage vs Investing in Canada (2026): Should You Pay Down the House or Invest the Money?
Every Canadian with a mortgage and any spare cash hits the same fork in the road. Pay down the house faster and lock in a guaranteed return, or invest the money and chase a higher long-run return that comes with real volatility. The answer depends on your mortgage rate, your tax bracket, your risk tolerance, and whether you actually invest the cash you would have used to prepay. Here is the 2026 math, in plain numbers, with a decision framework that fits any income.
The core comparison: a guaranteed return vs an expected return
Paying down your mortgage is a risk-free, after-tax return equal to your mortgage rate. If your rate is 4.99%, every extra dollar you put against the principal saves you 4.99% interest you would otherwise pay. That return is locked in. You cannot beat it; you also cannot lose it.
Investing is an expected return that comes with volatility. The S&P 500 has compounded at roughly 9% to 10% per year over long stretches; a global 80/20 portfolio sits closer to 7% to 8%; bonds are lower. None of those returns are guaranteed in any single year - drawdowns of 30% or more happen, and you do not know in advance which decade is the bad one.
2026 numbers: where do mortgage rates and returns sit right now?
As of mid-2026, the best Canadian mortgage rates look like this:
| Mortgage type | Best available rate (June 2026) | Notes |
|---|---|---|
| 5-year fixed (insured) | 3.99% | Lowest rates require under 20% equity or a default-insured switch. |
| 5-year fixed (uninsured) | 4.29% | Most renewals fall here. |
| 5-year variable | 3.30% | Tied to prime; expected to move with Bank of Canada decisions. |
| HELOC | Prime + 0.50% (around 5.45%) | Higher floor; useful for the Smith Maneuver but not for prepayment. |
Long-run expected returns, before tax, that most Canadian planners use for projections:
| Portfolio | Expected return | Drawdown to plan for |
|---|---|---|
| 100% equities (e.g. XEQT, VEQT) | 7.5% to 9.0% | -40% to -50% |
| 80/20 (e.g. XGRO, VGRO) | 6.5% to 8.0% | -30% to -40% |
| 60/40 (e.g. XBAL, VBAL) | 5.5% to 7.0% | -25% to -30% |
| GICs and HISA ETFs (CASH.TO, CBIL) | 3.0% to 4.0% | 0% |
Scenario 1: Investing inside a TFSA wins clearly
TFSA investment growth is fully tax-free. A 7% pre-tax return inside a TFSA is a 7% after-tax return. If your mortgage is 4.5% and you have available TFSA room, math leans hard toward investing.
| Strategy | 5-year outcome on $25,000 | 10-year outcome on $25,000 |
|---|---|---|
| Prepay mortgage at 4.5% | $31,154 interest avoided | $38,832 interest avoided |
| Invest $25,000 in TFSA at 7% | $35,063 | $49,179 |
| Investing advantage | $3,909 | $10,347 |
The TFSA advantage compounds because the growth is sheltered forever and the room can be reused. Even if you re-borrow against your home later, the dollars are still working harder inside the TFSA than against the mortgage.
Scenario 2: Investing inside an RRSP can win too, depending on bracket
The RRSP gives you a refund up front but taxes withdrawals in retirement. The right comparison is not 'RRSP growth vs prepayment' alone - it is 'RRSP growth plus tax refund reinvested vs prepayment'.
- Top bracket today, lower bracket later: The RRSP wins decisively. A 43% marginal contributor who retires at a 25% effective tax rate effectively keeps the spread.
- Same bracket today and later: Roughly neutral on the tax side; the deciding factor is whether you actually invest the refund or spend it.
- Lower bracket today, higher later: Skip the RRSP for now. Use the TFSA or prepay the mortgage instead.
Scenario 3: Non-registered, high mortgage rate - prepay
If your TFSA and RRSP are maxed and your remaining option is a non-registered account, a 4.5% to 5.5% mortgage rate is hard to beat. After Canadian dividend tax credits and capital-gains treatment, a 7% portfolio is closer to 5.0% to 5.5% after tax. The risk-adjusted comparison favours prepayment for most households at these rates.
Prepay the mortgage when
- Mortgage rate is above 5%
- TFSA and RRSP are already maxed
- Renewal is within 24 months and rates may climb
- Cash flow is tight and debt feels heavy
- Sleep at night matters more than the spread
Invest the money when
- Mortgage rate is below 4.5%
- TFSA or RRSP room is unused
- 20+ year investment horizon ahead
- Stable income and 6 months of emergency reserves
- You can stay invested through a 30% drawdown
The hidden return: cash flow and renewal risk
Most Canadian mortgages renew every 5 years. If you bought in 2021 at a 1.99% fixed rate and renew in 2026 at 4.29%, your monthly payment jumps significantly. Prepayment shrinks the principal that renews, which directly lowers the payment shock.
A $400,000 mortgage at 1.99% with 25 years remaining renews at roughly $1,690/month. The same balance at 4.29% renews at about $2,168/month - a $478/month increase, or $5,736/year. If you prepay $50,000 before renewal, the new payment drops to roughly $1,896/month, saving an extra $272/month in cash flow.
The behaviour problem nobody talks about
The math comparison assumes you actually invest the money. If you tell yourself you will invest the difference but historically you have spent it, prepayment is the better real-world answer. A 4.5% guaranteed return beats a 0% actual return every time.
- Set up an automatic monthly investment transfer the same day as your mortgage payment.
- Use the same brokerage for your TFSA, RRSP, and any taxable account so you can see the whole picture.
- Rebalance once a year so your portfolio stays aligned with the risk level you signed up for - a tool like Wealth Rebalancer makes this a 5-minute job.
- Treat the prepayment vs invest decision as a yearly review, not a once-and-done choice.
Decision framework: a 4-step answer for any situation
WORK THROUGH THESE IN ORDER
- Step 1: If your mortgage rate is above 6%, prepay aggressively. You will not reliably beat 6% after tax with risk-on investments.
- Step 2: If your mortgage rate is between 4% and 6%, fill your TFSA first - it is the highest-return account a Canadian can use. After it is maxed, choose between RRSP and prepayment based on your tax bracket and refund discipline.
- Step 3: If your mortgage rate is below 4%, invest in a diversified 80/20 or 100% equity portfolio inside your TFSA and RRSP. Prepayment is the lower-return choice in this band.
- Step 4: Always carry 3 to 6 months of expenses in liquid cash (HISA or a CASH.TO style ETF) before extra prepayment or investing. Liquidity is the cheapest insurance you will ever buy.
The split-the-difference strategy
If you cannot decide, split. Many Canadian households do 50/50 - half of every spare dollar goes to mortgage prepayment, half to TFSA or RRSP. You get part of the guaranteed return, part of the expected long-term upside, and a much smaller chance of regretting the choice in either direction.
A 50/50 split on a $1,000/month surplus, over 10 years at the assumed rates above, ends up within roughly 5% of the all-invest or all-prepay outcome - with a fraction of the emotional whiplash.
Frequently asked questions
Is it better to pay off your mortgage or invest in Canada?
If your mortgage rate is below 4.5% and you have unused TFSA or RRSP room, investing usually wins on long-run expected return. If your rate is above 5%, your registered accounts are maxed, or you would not actually invest the freed-up cash, prepayment is the better real-world choice. The TFSA almost always beats prepayment because the growth is fully tax-free.
Should I use my TFSA to pay off the mortgage?
Generally no. Withdrawing from a TFSA to pay down a mortgage costs you the future tax-free compounding inside the account. You can recontribute the withdrawal next calendar year, but you lose months of tax-sheltered growth. Use new savings for prepayment, and let the TFSA keep working.
How much can I prepay on a Canadian mortgage each year?
Most lenders allow 10% to 20% of the original principal per year as a penalty-free prepayment, plus a payment increase of 10% to 20%. Exact privileges depend on your lender and product - check your mortgage agreement for the 'prepayment privileges' section. Variable mortgages and HELOC sub-accounts generally allow unlimited prepayment.
Does paying down a mortgage count as investing?
Functionally yes - prepayment generates a risk-free, after-tax return equal to your mortgage rate. The CRA does not let you claim it as an RRSP or TFSA contribution, but for portfolio planning purposes, the dollars and the return are real. Many advisors classify aggressive prepayment as part of a household's fixed-income allocation.
What if my mortgage renews soon at a higher rate?
Renewal risk increases the value of prepayment. Every dollar you prepay before renewal is a dollar that does not get re-amortized at the new rate. If your renewal is within 24 months and you expect rates to be higher than your current rate, lean toward prepayment for that window, then revisit once the new rate is locked.
Should I cash out investments to pay off my mortgage?
Almost never. Selling triggers capital gains tax in non-registered accounts, withdrawal tax in RRSPs, and lost room in TFSAs. The transaction costs and tax drag usually outweigh the interest savings. The better play is to redirect future contributions, not unwind existing investments.