A mortgage is something most Canadians will carry for decades, yet it is one of the least understood financial commitments people make. At its core, a mortgage is a secured loan: you borrow money to buy property, the property serves as collateral, and you repay the loan through regular payments over many years. But the Canadian mortgage system has distinct rules around qualification, terms, rates, insurance, and prepayment that differ significantly from the American system and most other countries. This guide covers every foundational concept you need to understand before borrowing.
How a Canadian Mortgage Works
The Basic Structure
| Component | What It Means |
|---|---|
| Principal | The amount you borrow (purchase price minus down payment) |
| Interest | The lender’s charge for lending you money, expressed as an annual rate |
| Term | The length of your current mortgage contract (typically 1–5 years) |
| Amortization | The total scheduled repayment period (typically 25 or 30 years) |
| Payment frequency | How often you make payments (monthly, bi-weekly, accelerated bi-weekly, weekly) |
| Collateral | The property itself — the lender holds a charge against the title |
When you make a mortgage payment, part goes toward interest and part goes toward reducing the principal. Early in the amortization, most of your payment is interest. Over time, a larger share goes to principal. This is called amortization, and it is the single most important concept in understanding mortgage cost.
How Principal and Interest Shift Over Time
| Year of 25-Year Amortization | Interest Portion | Principal Portion |
|---|---|---|
| Year 1 | ~65% | ~35% |
| Year 5 | ~57% | ~43% |
| Year 10 | ~45% | ~55% |
| Year 15 | ~30% | ~70% |
| Year 20 | ~14% | ~86% |
| Year 25 | ~2% | ~98% |
Based on a $500,000 mortgage at 5.0%.
This is why making extra payments early in the amortization has such a large impact — you are reducing the balance that interest is calculated on for the remaining 20+ years.
Types of Mortgages in Canada
By Rate Type
| Type | How It Works | Best For |
|---|---|---|
| Fixed rate | Rate stays the same for the entire term | Certainty, budget predictability |
| Variable rate | Rate moves with the lender’s prime rate | Historically lower cost over time |
| Adjustable rate | Payment amount changes when prime changes | Full transparency on rate impact |
| Hybrid/combination | Part fixed, part variable | Splitting risk |
Most Canadians choose a 5-year fixed rate. Historically, variable rates have cost less over the long run, but the 2022–2023 rate cycle reminded borrowers that variable carries real risk.
By Insurance Status
| Type | Down Payment | Default Insurance | Rate Impact |
|---|---|---|---|
| Insured (high-ratio) | Less than 20% | Required (CMHC, Sagen, Canada Guaranty) | Lower rates (insured discount) |
| Insurable | 20%+ but meets insurance criteria | Lender can bulk-insure | Slightly lower rates |
| Uninsured (conventional) | 20%+ but does not qualify for bulk insurance | None | Slightly higher rates |
The counterintuitive reality: insured mortgages often get better rates than uninsured, even though the borrower put less down. This is because the default insurance removes the lender’s risk entirely, so they are willing to offer a lower rate.
By Registration Type
| Type | What It Means | Switching Cost |
|---|---|---|
| Conventional charge | Exact mortgage amount registered on title | Low ($200–400 to transfer) |
| Collateral charge | Higher amount registered (often 125% of value) | High ($1,000–1,900 to discharge and re-register) |
TD Bank, Tangerine, and National Bank default to collateral charges. Most other lenders use conventional charges. This has real implications at renewal time — collateral vs conventional mortgage explains the trade-offs.
By Mortgage Feature
| Type | Description | Use Case |
|---|---|---|
| Open mortgage | Can be repaid at any time without penalty | Selling soon or expecting large lump sum |
| Closed mortgage | Limited prepayment (typically 10–20% per year) | Most borrowers — lower rate than open |
| Portable mortgage | Can be transferred to a new property | Planning to move during the term |
| Assumable mortgage | Buyer can take over seller’s mortgage | Low-rate environment for sellers |
| Readvanceable mortgage | HELOC component grows as mortgage is paid down | Want ongoing access to equity |
Down Payment Rules in Canada
Minimum Down Payment by Purchase Price
| Purchase Price | Minimum Down Payment | Calculation |
|---|---|---|
| Up to $500,000 | 5% | 5% × purchase price |
| $500,001 – $1,499,999 | 5% on first $500K + 10% on remainder | Blended calculation |
| $1,500,000+ | 20% | No mortgage insurance available above this threshold |
Examples
| Purchase Price | Minimum Down Payment | Percentage |
|---|---|---|
| $300,000 | $15,000 | 5.0% |
| $500,000 | $25,000 | 5.0% |
| $700,000 | $45,000 | 6.4% |
| $1,000,000 | $75,000 | 7.5% |
| $1,499,999 | $124,999 | 8.3% |
| $1,500,000 | $300,000 | 20.0% |
The jump at $1,500,000 is severe — a home priced at $1,499,999 requires $125,000 down, while one priced at $1,500,000 requires $300,000. This creates a natural ceiling in many markets.
Where Down Payment Can Come From
| Source | Allowed? | Notes |
|---|---|---|
| Personal savings | Yes | Best option |
| FHSA withdrawal | Yes | First-time buyers, tax-free |
| RRSP (Home Buyers’ Plan) | Yes | Up to $60,000 per person, must repay over 15 years |
| Gift from immediate family | Yes | Lender requires signed gift letter |
| Sale of another property | Yes | Provide documentation of sale |
| Borrowed down payment | Yes, with conditions | Must be included in debt ratio calculations |
| Sweat equity | Rarely | Some rural lenders accept this |
The Mortgage Stress Test
Since 2018, the mortgage stress test requires borrowers to qualify at a rate higher than the one they will actually pay.
How It Works
| Element | Rule |
|---|---|
| Qualifying rate | Higher of: contract rate + 2%, OR 5.25% floor |
| Purpose | Ensure borrowers can handle rate increases at renewal |
| Applies to | All new mortgages, refinances, and most switches at federally regulated lenders |
| Does NOT apply to | Straight renewals with the same lender |
| Set by | OSFI (Office of the Superintendent of Financial Institutions) |
Impact Example
| Scenario | Without Stress Test | With Stress Test |
|---|---|---|
| Household income | $120,000 | $120,000 |
| Contract rate | 4.50% | — |
| Qualifying rate | — | 6.50% |
| Max mortgage (approx.) | $660,000 | $530,000 |
| Buying power reduction | — | ~20% |
The stress test reduces what you can borrow by roughly 15–25% depending on rates. It was introduced after the 2016–2017 housing boom to prevent overleveraging.
Mortgage Default Insurance
If your down payment is less than 20%, you must pay for mortgage default insurance. This protects the lender (not you) if you default.
Premium Rates
| Loan-to-Value Ratio | CMHC Premium (% of Mortgage) |
|---|---|
| 80.01% – 85% (15–19.99% down) | 2.80% |
| 85.01% – 90% (10–14.99% down) | 3.10% |
| 90.01% – 95% (5–9.99% down) | 4.00% |
Cost Example
| Factor | Amount |
|---|---|
| Purchase price | $500,000 |
| Down payment (5%) | $25,000 |
| Mortgage amount | $475,000 |
| CMHC premium (4.00%) | $19,000 |
| Total mortgage | $494,000 |
| Monthly premium cost (added to mortgage) | ~$82/month over 25 years |
The premium is usually added to your mortgage balance, so you pay interest on it for the life of the loan. On a $475,000 mortgage, the $19,000 premium will cost approximately $30,000+ in total when you include the interest charges over 25 years.
Some provinces also charge PST on the mortgage insurance premium — see PST on mortgage default insurance for the full breakdown.
Mortgage Qualification: What Lenders Look At
The Five Cs of Mortgage Lending
| Factor | What Lenders Assess | Key Metric |
|---|---|---|
| Capacity | Ability to make payments | GDS/TDS ratios |
| Credit | Payment history and score | 680+ for A-lenders |
| Capital | Down payment and reserves | 5–20%+ with closing costs |
| Collateral | Property value and condition | Appraisal |
| Character | Stability of employment and finances | Job tenure, self-employment history |
Debt Service Ratios
| Ratio | Calculation | Maximum |
|---|---|---|
| GDS (Gross Debt Service) | (Mortgage + property tax + heating + 50% condo fees) ÷ gross income | 39% |
| TDS (Total Debt Service) | (All housing costs + all other debt payments) ÷ gross income | 44% |
These are the standard thresholds. Some lenders and insurers allow up to 39% GDS / 44% TDS for strong borrowers.
Income Documentation by Employment Type
| Employment Type | Documents Required |
|---|---|
| Salaried (full-time) | Employment letter, recent pay stub, T4 |
| Hourly/part-time | 2-year history, letter confirming hours |
| Self-employed | 2 years of NOAs, T1 Generals, business financials |
| Commission-based | 2-year average of commission income |
| Rental income | Lease agreements, T1 Generals showing rental income |
| Multiple income sources | All of the above as applicable |
The True Cost of a Mortgage
The interest rate is only one part of the total cost. Here is a complete picture of what a $500,000 mortgage at 5% over 25 years actually costs.
Total Interest Paid
| Amortization | Monthly Payment | Total Interest | Total Cost |
|---|---|---|---|
| 25 years | $2,908 | $372,400 | $872,400 |
| 30 years | $2,664 | $459,000 | $959,000 |
Extending from 25 to 30 years lowers your monthly payment by $244 but costs you an additional $86,600 in interest over the life of the mortgage.
All Costs of Getting a Mortgage
| Cost | Typical Range | When Paid |
|---|---|---|
| Mortgage default insurance | $0–$19,000+ | Added to mortgage |
| Appraisal fee | $300–500 | At application |
| Home inspection | $400–600 | Before closing |
| Legal fees | $1,000–2,500 | At closing |
| Title insurance | $200–500 | At closing |
| Land transfer tax | Varies by province ($0 in Alberta/Saskatchewan to 2%+ in Toronto) | At closing |
| Property tax adjustment | Varies | At closing |
| Moving costs | $500–3,000+ | After closing |
See the complete breakdown at closing costs guide by province.
Payment Frequency Options
| Frequency | Payments Per Year | Impact |
|---|---|---|
| Monthly | 12 | Standard, highest total interest |
| Semi-monthly | 24 | Payment = monthly ÷ 2; no extra payment benefit |
| Bi-weekly | 26 | Payment = monthly ÷ 2; equivalent of 13 monthly payments per year |
| Accelerated bi-weekly | 26 | Payment = monthly ÷ 2; saves ~3 years on 25-year amortization |
| Weekly | 52 | Payment = monthly ÷ 4 |
| Accelerated weekly | 52 | Saves ~3 years; same benefit as accelerated bi-weekly |
The key takeaway: accelerated bi-weekly or weekly payments give you one extra monthly payment per year, which can shave roughly 3 years off a 25-year amortization and save tens of thousands in interest. This is one of the simplest strategies to pay off your mortgage faster — see how to pay off your mortgage faster for more.
The Term vs Renewal Cycle
Canadian mortgages are structured differently from American mortgages. In the US, a 30-year mortgage locks in one rate for 30 years. In Canada, you sign a mortgage term (usually 5 years), and then you must renew at the end of each term at a new rate.
How It Works Over 25 Years
| Year | Event | Action Required |
|---|---|---|
| 0 | Original mortgage | Choose rate, term, amortization |
| 5 | Term 1 ends | Renew or switch lenders |
| 10 | Term 2 ends | Renew or switch lenders |
| 15 | Term 3 ends | Renew or switch lenders |
| 20 | Term 4 ends | Renew or switch lenders |
| 25 | Term 5 ends | Mortgage fully repaid |
Each renewal is an opportunity to renegotiate your rate, switch lenders, or change your mortgage features. This is why understanding mortgage renewal is essential — you will go through this process multiple times.
What Happens if Rates Rise at Renewal
| Scenario | Monthly Payment Change |
|---|---|
| Renewed at same rate (5.0%) | $0 |
| Rate rises 1% (to 6.0%) | +$310/month |
| Rate rises 2% (to 7.0%) | +$630/month |
Based on $400,000 remaining balance, 20 years remaining amortization.
This is the core risk of the Canadian mortgage system: your payment can change significantly at each renewal based on where rates are at that point. The stress test exists to ensure borrowers can absorb this kind of increase.
Prepayment Privileges
Most closed mortgages in Canada allow you to make extra payments within limits, without triggering a penalty.
Typical Prepayment Privileges
| Feature | Typical Range |
|---|---|
| Annual lump sum | 10–20% of original mortgage amount |
| Payment increase | 10–25% increase to regular payment |
| Double-up payments | Some lenders allow (not all) |
Penalty for Exceeding Privileges
| Mortgage Type | Penalty Calculation |
|---|---|
| Variable rate | 3 months’ interest |
| Fixed rate | Greater of: 3 months’ interest OR Interest Rate Differential (IRD) |
IRD penalties on fixed-rate mortgages can be extremely expensive — often $15,000–$40,000 on a typical mortgage. This is one of the most important details to understand before signing. See how mortgage penalties are calculated for the full breakdown.
How to Get a Mortgage in Canada: Step by Step
| Step | Action | Timeline |
|---|---|---|
| 1 | Check your credit score and debt ratios | 6–12 months before buying |
| 2 | Save for down payment and closing costs | Ongoing |
| 3 | Get pre-approved | 2–4 months before buying |
| 4 | Shop for a home within your pre-approval range | Varies |
| 5 | Make an offer and include financing condition | When you find a home |
| 6 | Finalize mortgage application with lender | Within days of accepted offer |
| 7 | Lender orders appraisal | 1–2 weeks |
| 8 | Receive formal mortgage approval | 1–3 weeks |
| 9 | Sign mortgage documents with lawyer/notary | 1–2 weeks before closing |
| 10 | Close, receive keys, start making payments | Closing day |
Pre-approval typically lasts 90–120 days and locks in a rate. Read more in our mortgage pre-approval guide.
Key Canadian Mortgage Rules to Know
| Rule | Detail |
|---|---|
| Maximum amortization (insured) | 25 years (30 years for first-time buyers on new builds) |
| Maximum amortization (uninsured) | 30 years (most A-lenders) |
| Stress test | Contract rate + 2% or 5.25% floor |
| Insured mortgage cap | $1,500,000 purchase price |
| Down payment on investment properties | Minimum 20% |
| Foreign buyer restrictions | Prohibited in most markets (2023–2027 ban with some exceptions) |
| Portability | Available with most lenders (terms vary) |
| Prepayment privileges | 10–20% annually (varies by lender) |
Other Mortgage Topics
- Mortgage types in Canada — detailed comparison of every mortgage type
- Fixed vs variable rate mortgage — which one should you choose?
- How much house can I afford? — affordability calculator and guide
- Mortgage calculator — calculate payments for any scenario
- First-time home buyer programs — every incentive available
- How are mortgage rates determined? — what drives rate changes
- Mortgage stress test — current qualifying rules
- Down payment calculator — how much you need to save
- CMHC insurance explained — default insurance costs and rules