Rent vs Buy Calculator Canada
Compare the two housing paths over the years you realistically expect to stay. The model includes Canadian mortgage compounding, renewal-rate pressure, mortgage insurance when applicable, transaction costs, changing ownership costs, home equity and the investment value of the cheaper monthly path.
See the Canadian mortgage formula, model constants and decision boundaries
Formula sequence
The model converts the quoted Canadian mortgage rate to an equivalent monthly rate, amortizes the insured or uninsured principal, recalculates the payment at the first renewal, grows rent and ownership costs month by month, and compares renter investments with owner equity plus any owner investment account. Values are rounded only for display.
Model constants
Internal model version: NH-RVB-CA-2.0. Source review date: 2026-07-13. Standard CMHC premium bands are used only for owner-occupied purchases below 20% down with amortization of 25 years or less. A result within 2.5% of the larger end value, with a minimum band of CAD 5,000, is treated as too close for a hard winner.
Included
- Down payment, financed mortgage insurance, initial and renewal mortgage rates
- Property tax, insurance, maintenance, condo fees and utility difference
- Closing, legal, inspection, moving, renovation and selling-cost assumptions
- Home appreciation, rent growth, investment growth and invested monthly cost difference
Not included
- Mortgage qualification, stress-test approval or lender-specific fees
- Provincial sales tax on mortgage insurance, tax deductions or principal-residence tax exceptions
- Municipal rebate rules, prepayment penalties, major special assessments or renovation value added
- Lifestyle value, school access, mobility needs or the cost of an unexpected move
Build the rent and ownership paths
Use a property you could actually buy, a rent you could actually keep, and a time horizon that reflects when you may move.
Your rent-or-buy decision snapshot
The initial view is a verified worked example. Your result replaces it only after a valid calculation.
The renter keeps a stronger balance sheet and about CAD 1,474 more monthly flexibility in year one.
The home builds equity, but the combination of transaction costs, higher carrying costs and a 6.25% renewal assumption prevents buying from catching up within seven years.
Example only — enter your numbers for a personal estimate.
Includes the invested monthly cost difference.
Equity after selling costs plus remaining cash investments.
Average owner cost above the rent path.
The owner does not pass the renter in this horizon.
Why renting leads here
The renter starts with all CAD 150,000 invested and adds the monthly cost difference. The buyer converts cash into equity but also absorbs the purchase and sale friction.
What can reverse it
If the renter spends rather than invests the monthly difference, the example flips toward buying. Investment behaviour is not a minor assumption.
Worked example independently reconciled to model NH-RVB-CA-2.0. It is not a Canadian market average or a recommendation.
Why this path leads
Assumption most likely to flip it
Constraint that fails first
Continue from this housing result
Planning estimate only. Confirm mortgage insurance, closing costs, land transfer tax, lender terms and local ownership costs before committing to a purchase.
What is driving your housing verdict
Four signals separate a financially attractive purchase from one that only looks attractive through the mortgage payment.
Stress tests that can change the winner
These are recalculated from the same model. They are not generic tips or fixed national averages.
Where each path builds or loses wealth
The table separates recoverable equity from cost drag, invested capital and the final sale assumption.
| Component | Amount | Why it matters |
|---|
How the decision changes through time and stress
Each chart answers a separate question: who leads over time, how the monthly gap evolves and which assumption changes the final result most.
Net-worth paths through the selected horizon
Renter portfolio versus owner equity plus owner investments after estimated selling costs.
Monthly housing-cost gap by year
Shows whether rent growth or mortgage renewal changes the monthly winner.
Winner sensitivity under five realistic changes
Positive values favour buying; negative values favour renting.
Year-by-year wealth and payment path
Use this schedule to see whether a late break-even is genuinely useful for the period you expect to stay.
| Year | Avg rent cost | Avg owner cost | Mortgage payment | Home value | Mortgage balance | Owner net worth | Renter net worth | Gap | Reading |
|---|
Keep the assumptions with the result
Download the summary and yearly schedule so the rent, mortgage, renewal, growth and transaction assumptions do not get separated from the conclusion.
How to build a comparison you can actually use
Start with the property and rental alternatives available to the same household. A downtown apartment and a suburban detached home may have different space, commute and lifestyle value; the financial model cannot correct for a comparison that is not practically equivalent.
Use the move date as the horizon
The horizon is not the mortgage amortization. It is the number of years before you expect to sell, move or make a new housing decision. Buying needs enough time to recover purchase and sale friction. A result that breaks even in year 11 does not support a household likely to move in year 6.
Separate the first mortgage term from the renewal assumption
Canadian borrowers often renew before the mortgage is repaid. The initial rate calculates the first payment. At the end of the entered term, the remaining balance is re-amortized over the remaining schedule using the renewal rate. This does not predict future rates; it exposes how dependent the purchase is on the first contract.
Give the cheaper path credit only when the money stays invested
When the toggle is on, the path with the lower monthly housing cost invests the difference. This is symmetrical: the renter invests when renting is cheaper, and the owner invests when ownership becomes cheaper. Turning the toggle off answers a different behavioural question.
What the final net-worth gap does and does not prove
A positive buy gap means projected owner equity plus owner investments exceed the renter portfolio at the end of the selected horizon. A negative gap means the renter portfolio is larger after giving the buyer credit for principal repayment and home appreciation.
The gap is not guaranteed profit. Home value, investment return, renewal rate, rent growth, repair costs and selling expenses are assumptions. When the gap falls inside the model’s close band, the page deliberately avoids a hard winner because realistic changes can reverse it.
Monthly pressure is a separate test. A purchase can lead in long-term wealth and still be a poor household decision when it drains savings or leaves no room for repairs, childcare, transportation or income interruption.
Decision rules for a Canadian renter considering a purchase
Buying leads and cash remains healthy
Check whether the result survives flat appreciation and a higher renewal rate. A purchase is more defensible when it does not depend on one optimistic assumption.
Buying leads but the monthly budget is tight
Treat affordability as the first constraint. Lower the purchase price, increase the cash buffer or delay the purchase rather than relying on future appreciation to rescue the budget.
Renting leads only when the difference is invested
The financial advantage is behavioural. Automate the monthly transfer or use the no-investing stress test as the more realistic result.
The result is too close to call
Use mobility, job stability, repair tolerance and the value of location as the deciding factors. A small modeled gap does not justify pretending the future is precise.
Four Canadian housing cases that change for different reasons
Seven-year condo comparison with a renewal increase
High condo fees and a higher post-term rate can keep the owner path behind even when the property appreciates. The mortgage payment alone hides both pressures.
Stable family planning to stay for 15 years
A long horizon gives principal repayment and appreciation more time to overcome closing and selling costs. The key question becomes whether the monthly budget survives the early years and renewal.
Buyer with the down payment but no repair reserve
The model may show a strong owner net worth while the cash-readiness verdict remains weak. A purchase that consumes every dollar can fail before the long-term projection matters.
Low rent with disciplined investing
Below-market rent can be a financial asset when the household invests the difference. If that difference disappears into spending, the modeled advantage disappears with it.
Assumptions that quietly distort rent-versus-buy math
Property tax, insurance, maintenance, condo fees and utility differences can change the monthly winner. Principal also needs to be separated because it becomes equity.
A five-year rate is not automatically the rate for a seven-, ten- or fifteen-year housing horizon. The remaining balance can be repriced before the decision ends.
Equity includes down payment capital and principal repaid from household cash flow. Profit cannot be read without accounting for interest, ownership costs and transaction friction.
A cheaper rental path creates wealth only when the cash difference is actually retained. The no-investing stress test exists to expose that dependency.
How the Canadian mortgage and wealth paths are calculated
Equivalent monthly mortgage rate = (1 + quoted annual rate / 2)2/12 − 1. Monthly payment = principal × r(1+r)n / ((1+r)n − 1).
The financed principal equals the purchase price minus the down payment plus the standard mortgage insurance premium when the down payment is below 20% and the purchase fits the model’s insured-mortgage boundaries. The payment is recalculated after the initial term using the entered renewal rate and the remaining amortization.
Each month the model updates rent, renter insurance, home value, property tax, maintenance, insurance, condo fees and utility difference. Both investment balances receive the same portfolio return. When monthly-difference investing is enabled, the cheaper path receives the cost difference as an end-of-month contribution.
At each year-end, renter net worth is the renter investment balance. Owner net worth is projected home value minus mortgage balance and optional selling costs, plus the owner’s remaining investment balance. Break-even is the first year when owner net worth passes renter net worth.
Questions to resolve before relying on this housing comparison
Does the model include mortgage default insurance?
Yes, for standard owner-occupied purchases below 20% down, below the insured price ceiling and with amortization of 25 years or less. The premium is added to the mortgage principal. Provincial sales tax on the premium is not included.
Why does a 30-year insured purchase produce a validation warning?
Eligibility and premium treatment can depend on first-time-buyer or new-build status. This page does not collect those eligibility details, so it avoids applying a premium schedule that may not fit. Use 25 years or confirm the insured 30-year structure with a lender or the CMHC calculator.
Why is the renewal rate separate from the initial rate?
The mortgage term can end before the amortization. FCAC notes that borrowers usually need multiple terms and renegotiate the rate at renewal. A separate renewal assumption makes that risk visible instead of silently extending the first rate through the whole horizon.
Does the renter always receive the monthly difference?
Only when the investing toggle is on and renting is the cheaper monthly path. If ownership becomes cheaper, the owner receives the difference instead. Turning the toggle off removes both contributions.
Are land transfer tax and rebates calculated automatically?
No. They can vary by province, municipality, buyer status and available rebates. Enter the amount from the relevant provincial or municipal source rather than relying on a national default.
Why can buying build equity and still finish behind?
The renter may keep more initial capital invested and add a monthly cost difference. The owner also pays interest, tax, insurance, maintenance and transaction costs. Equity must exceed those opportunity costs before buying leads.
Is the result a mortgage approval or financial recommendation?
No. The model is an educational planning comparison. It does not test the mortgage stress test, debt-service ratios, credit, lender policy, legal issues or suitability for your household.